Polarizers Retarders Mounting Hardware Liquid Devices

Controllers 3 . 2 Note: Polarizers are available from less than 5mm square to 5mm square to are available from less than Polarizers Note: diameter 200 mm and greater Selecting the appropriate dichroic polarizing material enables range the over performance ratio extinction excellent variationssmall to polarizationDue the in nm. 5000 to 310 from extinction ratios degrade over larger material, apertures for all dichroic polarizers. Meadowlark has improved the broadband high-efficiency, polarizerswith dichroic of transmission product our in used windows glass the on antireflectioncoatings constructionglass Laminated contributessubstantial a to design. Our polarizerin improvement transmitted distortion. wavefront allowing for assembly greatly improves the product durability, cleaning. easy and repeated Meadowlark Optics also offers a line of high contrast dichroic glass polarizers for the near and mid regions of the spectrum up High to throughput 5000 and nm. contrast make requirements. infrared near for choice excellent polarizersan these Key advantages of dichroic polarizers include superior angular acceptance and flexibilityextreme for custom shapes and sizes. Please call one of our Sales Engineers assistance. for Beamsplitting Polarizers Beamsplitting Beamsplitting polarizers divide unpolarized incident into absorption Low beams. polarized linearly orthogonal, (usually) two coatings provide an combination excellent of damage resistance and extinction ratio at a Rugged moderate beamsplitter price. cubes are easily mounted and therefore designed into many unique the polarizers offer Beamsplitting applications. instrument one of polarizedlinearly advantage two providing output beams, transmitting straight off through at and “splitting” the second of theratio the extinction When necessary, 90 degrees. precisely dichroic a adding by improved dramatically be can reflectedbeam both offers Optics Meadowlark face. output the to polarizer to visible covering Polarizers, Beamsplitting Broadband and Line near Laser infrared applications. Line Beamsplitting Polarizers V-type improving offer antireflectionthe advantage of coatings, efficiency by limiting Broadband Beamsplitting surface losses. broadband or wavelength tunable for versatile more are Polarizers sources. Dichroic Polarizers – Polymer and Glass – Polymer Polarizers Dichroic polarizers dichroic of line extensive an offers Optics Meadowlark made from both polymer and treated Dichroic glass materials. refers to the selective absorption of the anisotropic These polarizers are polarizingusually material (Diattenuation). film polymer dyed and stretched thin, a laminating byconstructed between two polished and antireflection-coated glass windows. The resulting compact component offers value excellent and is often the best choice for flux densities below 1 watt/cm Meadowlark Meadowlark Optics now offers four types of linear polarizers: grid wire beamsplitting, glass), and (polymer dichroic crystal.and calcite Regardless of input polarization, a linear polarizer a linear polarizer of input polarization, Regardless light. linearly polarized only transmits

Fig. 1-1

Ideal linear polarizers allow the transmission of only one polarization state with zero leakage of all other polarization states. Rotating the linear polarizer about the optical axis linear perfect a Thus, polarization. of plane output the changes and beam input unpolarized an of 50% only transmits polarizer two perfect polarizers with their transmission axes crossed polarizersin Imperfections beam. incident an extinguish totally such as scattering materialsites, defects (such as pinholes in thin films) and field-of-view effects reduce ideal polarizers’ contrast. several key factors When must choosing be a linear polarizer, aperture size, wavelength range, cost, considered including: transmission efficiency damage threshold, acceptance angle, and extinction Extinction ratio. ratio (or contrast ratio) is defined as the ratio of transmitted intensity through parallel polarizers to the transmitted intensity through crossed extinction polarizerswith offers Optics Meadowlark polarizers. ratios as high as 10,000,000:1 over the operating wavelength range. Linear Polarizer Principles Polarizer Linear [email protected] • (303) 833-4333 • www.meadowlark.com [email protected] Liquid Crystal Liquid Crystal Devices Mounting Hardware Retarders Polarizers 4 Controllers Fig. 1-2 Linear Polarizer Principles polarized beams,conveniently separated by 90°. Beamsplitting Polarizers provide two orthogonally www.meadowlark.com •(303) 833-4333• [email protected] contact aMeadowlark for OpticsSalesEngineer assistance. basis.Please custom a on available is material transmissive coated.when ultravioletdurable selected moreSpecially are spectrum.infrared powerand relativelyhigh handle can They 200mm diameter with high contrast across the visible and near to up sizes aperture large in available are Versalightpolarizers wire spacing.) grid the than greatermuch wavelengthsbecome their as solution it. (Longer are closer approximations to the ideal strongly affected by the wavelength of the light passing through reduce the contrast of the polarizer, which is also field and pass 100% of the transverse field. Material defects and parallelIdeally, the for reflector perfect a as behavewires the dimension.transverse the in than wires the along mobility the “wires”higher much a havewhich free oscillate two orthogonal polarizations.the for Electromagnetic radiation incident on behavior different drive conditions boundary in grid,wire the with interactsdifferences radiation unpolarized substrates.incident glass When on conductors aluminum pitch nm 100 sub place to used are techniqueslithographic wires, conductive fine of array of an Instead arranging manually frame. non-conductive a around wrapped wires metallic fine using Hertz Heinrich by experiments 1888 the of outgrowth modern the are polarizers grid wire VersaLight Wire GridPolarizers power handlingandultraviolet performance. However,both limits construction cemented with version the performance.foroverallsystem important is angle acceptance wide a where recommended are Polarizers Glan-Thompson to internal reflection separate the two polarization components. total of advantage takes design material,the calcite optical Glan-Thompson calcite polarizers. Manufactured from Grade A performance, from 320 to 2300 nm. Meadowlark Optics offers rare. Calcite material exhibits extremely broadband transmission are crystal natural this of pieces uniform opticallylarge since efficiency.transmission and ratio limited,are sizes Aperture excellent polarization properties including very high extinction with crystal birefringent occurring naturally a is Calcite Calcite Polarizers Polarizers Retarders Mounting Hardware Liquid Crystal Devices Liquid Crystal

Controllers 5 Polarized Light in Polarized Polarized Light and Optical , edited by edited Optics, of Handbook , edited(SPIE by , Robert Fischer, e, (Harvard Use, and Production Light: Polarized , (John Wiley and Sons, New New Sons, and Wiley (John , Testing Shop Optical

Optical Optical System Design Modes with a Liquid-Crystal Spatial Light Modulator”, Appl. Appl. Modulator”, Light Liquid-CrystalSpatial a with Modes 1517 (1997). 36 (7), Opt. York, 1978). York, (24), 5146 (1988). 27 (24), Opt. Appl. Retarders (),” , 1115 (1964). 54, Am. M. Bass, (McGraw-Hill, New York, 1995), Vol. I, Chap. 5; J.A. J.A. 5; Chap. I, Vol. 1995), York, New (McGraw-Hill, Bass, M. II, Vol. “Optical Properties of Films and Coatings,” ibid., Dobrowolski, “Polarizers,” J.M.Bennett, 14. 42; Chap. Chap. I, II, Vol. Vol. ibid., ibid., ,” “Liquid Wu, S. 3; Chap. 1966). Mass., Cambridge, University Press, t, (Pergamon Press, New York, 1971). York, New Press, (Pergamon t, Measuremen Calif., Diego, San Press, (Academic , Spectroscopy and Optics 1990). in

press, McGraw-Hill, 2008), Chap 19. 2008), McGraw-Hill, press, Linear Polarizer Principles Polarizer Linear 9. G. Love, “-front Correction and Production of “Wave-front Zernike Love, G. 9. 8. D. Malacara, Malacara, D. 8. 7. P.D. Hale and G.W. Day, “Stability of Birefringent Linear Day, Hale and G.W. 7. P.D. 3. D. Clarke and J.F. Grainger, Grainger, Clarke and D. J.F. 3. Soc. J.Opt. Plates,” Retardation Theoryof “Exact Holmes, D.A. 6. 4. D.S. Kliger, J.W. Lewis and C.E. Randall, Randall, Lewis and C.E. J.W. Kliger, D.S. 4. Shurcliff, W.A. 5. 1. T. Baur and S. McClain, “Polarization Issues in Optical Design” Design” Optical in Issues “Polarization McClain, S. and Baur T. 1. in “Polarization,” Bennett, J.M. 2. Polarizer and Retarder References: References: Retarder and Polarizer [email protected] • (303) 833-4333 • www.meadowlark.com [email protected] Liquid Crystal Liquid Crystal Devices Mounting Hardware Retarders Polarizers 6 Controllers Precision LinearPolarizers Fig. 1-5 Fig. 1-3

Polarized Transmission (%) Polarized Transmission (%) 30 Polarized40 50 Transmission60 70 (%)80 90 30 40 50 60 70 80 90 60 65 70 75 80 85 90 60 65 70 75 80 85 90 325 325 0 2 4 6 8 800 780 760 740 720 700 specify –NIR1 specify Near infrared polarizer 1performance, Ultraviolet polarizer performance, –UV1 specify 345 345 Wavelength (nm) Wavelength (nm) Wavelength (nm) 365 365 385 385 www.meadowlark.com •(303) 833-4333• [email protected] 50 100 150 200 250 300 350 0 20 40 60 80 100 120 140 160 180 200 0 20 40 60 80 100 120 140 160 180 200

Extinction RatioRatio Extinction Ratio • • • • • Key Benefits Fig. 1-6 Fig. 1-4 polarizer. ratiosinfiguresaremeasuredagainstExtinction aGlan-Thompson Polarized Transmission (%) 100 Ultraviolet, visible,nearinfrared wavelengths Low transmitted wavefront distortion Wide angularacceptance Excellent surface quality High extinction ratios

20 40 60 80 Polarized Transmission (%) 100 0 10 20 30 40 50 60 70 80 90 700 0 350 specify –NIR2 specify Near infrared polarizer 2performance, Visible polarizer performance, –VIS specify 900 450 1100 Wavelength (nm) Wavelength (nm) 550 1300 650 1500 750 1700

850 1900 1 10 100 1,000 10,000 100,000 10 100 1,000 10,000 100,000

Extinction Ratio Extinction Ratio Polarizers Retarders Mounting Hardware Liquid Crystal Devices Liquid Crystal

Controllers 7

Part Part Number Number DP-050-UV1 DP-050-VIS DP-050-NIR1 DP-050-NIR2-n DP-100-UV1 DP-100-VIS DP-100-NIR1 DP-100-NIR2-n DPM-050-UV1 DPM-050-VIS DPM-050-NIR1 DPM-050-NIR2-n DPM-100-UV1 DPM-100-VIS DPM-100-NIR1 DPM-100-NIR2-n DPM-200-UV1 DPM-200-VIS DPM-200-NIR1 DPM-200-NIR2-n (in.) (in.) 0.13 0.13 0.14 0.14 0.26 0.26 0.27 0.27 0.25 0.25 0.25 0.25 0.35 0.35 0.35 0.35 0.50 0.50 0.50 0.50 Thickness Thickness Mounted

Unmounted (in.) (in.) 0.40 0.40 0.40 0.40 0.80 0.80 0.80 0.80 0.40 0.40 0.40 0.40 0.70 0.70 0.70 0.70 1.20 1.20 1.20 1.20 Clear Aperture Clear Aperture on rmati Info

(in.) (in.) 0.50 0.50 0.50 0.50 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 2.00 2.00 2.00 2.00 Diameter Diameter Ordering Custom AR coatings are available on all polarizers. AR coatings Custom AR coating please choose from the following NIR2 polarizers, For options: 650 – 950 nm NIR2 – 1 covers 900 – 1250 nm NIR2 – 2 covers nm 1200 – 1700 NIR2 – 3 covers Both mounted and unmounted Precision Linear Polarizers are offered as standard products. Meadowlark Optics marked. axis clearly their transmission Linear Polarizers have Precision

/5. , 20 ns, visible λ

2

, CW /10 flat). /10 For flat). visible 2 , 20 ns, 1064 nm λ 2 200 mJ/cm 2 J/cm Dichroic Polymer Dichroic +0/-0.010 in. ±0.020 in. +50° C -50° C to +50° C -50° C to +40° C -50° C to 1 W/cm UV Grade Synthetic Fused Synthetic UV Grade Silica A, fine annealed BK 7 Grade A, fine annealed BK 7 Grade ≤ λ/2 ≤ λ/5 ≤ λ/2 and dig 40-20 scratch min ≤ 2 arc min ≤ 1 arc min ≤ 2 arc ~ 4.25% (uncoated) ≤ 0.5% ≤ 0.5% ±0.005 in. olerance olerance Range emperature

ons cificati

eflectance (per surface, at normal incidence) at (per surface, eflectance ecommended Safe Operating Operating Safe ecommended ransmitted Wavefront Distortion (at 632.8 nm) (at Distortion Wavefront ransmitted Spe these polarizers. these polarizers. your Meadowlark are available. Please contact coatings Custom quote. a custom sales engineer for Optics Prolonged exposure to strong ultraviolet radiation may damage ultraviolet strong to Prolonged exposure Polarizer Material Polarizer Thickness T T Storage Ultraviolet Visible Near Infrared R Limit Ultraviolet Visible Near Infrared Ultraviolet Visible Near Infrared Substrate Material Substrate Ultraviolet Visible Near Infrared T Quality Surface Beam Deviation Ultraviolet Visible Near Infrared R T Diameter Mounted Unmounted We We use various polarizer materials to cover wavelengths between 320 and 2000 Both nm. visible and near infrared polarizers are supplied with broadband a high-efficiency, optional are coatings AR single-layer coating; antireflection(AR) polarizers. on our ultraviolet

Meadowlark Meadowlark Optics manufactures Precision Linear Polarizers high between laminated materialpolarizer sheet dichroic using quality glass substrates (BK 7 material, Precision Linear Polarizers Linear Precision wavelength polarizers, wavelength this polarizers, construction produces a total distortion of less than wavefront transmitted [email protected] • (303) 833-4333 • www.meadowlark.com [email protected] Liquid Crystal Liquid Crystal Devices Mounting Hardware Retarders Polarizers 8 Controllers High Contrast LinearPolarizers Fig. 1-7 measured aGlan-Thompson polarizer Polarizer centered at 800nm.Extinction ratio is Typical transmission for aHighContrast Linear www.meadowlark.com •(303) 833-4333• [email protected] edwak pis ae Egne t dsus or specific your discuss application. to a Engineer contact Sales Please available. Optics are Meadowlark mm 25 to bandpasses 10 nm from 80 sizes to and 60 with nm 1580 to 630 from ranges wavelength Custom 10,000:1. as high as available are ratios apertures.Contrast large in polarizers calcite of performance the offer Polarizers Linear Contrast High Optics Meadowlark wavefront superior achieve performance andsurface quality. to substrates glass between quality polarizers high glass dichroic Polarcor™ laminating constructed by are polarizers These Polarizers. Linear Contrast near the High of in line a contrast offers now improvedOptics region, Meadowlarkinfrared for need the to response In • • • Key Benefits R T R Beam Deviation Surface Quality (at 632.8nm) T Substrate Material Polarizer Material these polarizers. Prolonged exposure to strong ultraviolet radiationmaydamage sales engineerfor assistance. Custom sizes areavailable.Pleasecontact yourMeadowlark Optics Spe Or Diameter emperature Range ransmitted Wavefront Distortion ecommended Safe Operating Limit eflectance (persurface) 1.00 1.00 (in.) de Absorptive Dichroic Glass High T High Contrast cifications rin g ransmission

I Clear Aperture Clear Aperture n fo 0.40 0.70 (in.) r m ati o Thickness n n 0.25 0.35 (in.) 1 W/cm -50° Cto +70°C ≤ 3arc min 40-20 scratch anddig ≤ λ/4 BK 7Grade fineannealed A, Dichroic Glass ≤ 0.5%at normalincidence 2 J/cm 200 mJ/cm Wavelength specify specify specify specify Range 2 , 20ns,1064nm 2 , CW 2 , 20ns,visible PPM -050λ PPM -100λ Number Part

Polarizers Retarders Mounting Hardware Liquid Crystal Devices Liquid Crystal

Controllers 9

Part Part Number Number UHP - 050 - UV UHP - 050 - VIS UHP - 050 - IR UHP - 050 - LNIR UHP - 100 - UV UHP - 100 - VIS - 100 - IR UHP - 100 - LNIR UHP UPM - 050 - UV UPM - 050 - VIS UPM - 050 - IR UPM - 050 -LNIR UPM - 100 - UV UPM - 100 - VIS UPM - 100 - IR UPM - 100 -LNIR ° C (in.) (in.) 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.25 0.25 0.25 0.25 0.35 0.35 0.35 0.35 ≤ 0.5% ≤ 0.5% Thickness Thickness ≤ 0.5% ≤ 0.5% ≤ 1.0% with R

with R with R with R Mounted and Laminated Mounted (in.) (in.) 0.40 0.40 0.40 0.40 0.80 0.80 0.80 0.80 0.40 0.40 0.40 0.40 0.70 0.70 0.70 0.70 Unmounted and Laminated Unmounted Clear Aperture Clear Aperture on rmati Info

(in.) (in.) 0.50 0.50 0.50 0.50 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Extremely high contrast greater than 10,000,000:1 than greater high contrast Extremely 400 to part usable Unlaminated 5000 nm 340 to ranges Wavelength Glass Dichroic Absorptive Diameter Diameter Ordering IR-AR4 covers 1200-1750 nm 1200-1750 nm IR-AR4 covers IR-AR3 covers 600-1200 nm IR-AR3 covers IR-AR2 covers 550-850 nm IR-AR2 covers Custom anti-reflection coating options are available. Please call options coating anti-reflection Custom your Meadowlark Optics Sales Engineer for assistance. assistance. for Sales Engineer Optics your Meadowlark example: For 340-410nm with R UV covers 450-750 nm IR-AR1 covers Key Benefits Key • • • • If you Meadowlark Optics need now has the solution for you. Our extremely UHP- UV series high polarizers offer high contrast contrast in the to UV from 400 polarizers, 360 nm and then our contrast UHP-LNIR over series the polarizers exceptionally offer 5000 nm. broad high range from 650 to - 4.25% at normal incidence 4.25% at ~ ±0.005 in. +0/-0.010 in. +50° C -20° C to Dichroic Glass Dichroic glass Borofloat glass float D263T display glass float D263T display Design dependent ≤ 1λ per 10mm diameter and dig 40-20 scratch min ≤ 5 arc olerance

ons cificati eflectance (per surface) eflectance ransmitted Wavefront Wavefront ransmitted ange * Range emperature Specifications above are for laminated Ultra-high contrast polar Ultra-high contrast laminated are for above Specifications izers. For unlaminated parts, please contact your Meadowlark your Meadowlark parts, please contact unlaminated For izers. Sales Engineer. Optics +400° C survive parts can -50° C to * unlaminated Spe Diameter T Diameter Mounted Unmounted T Laminated Distortion (at 632.8nm) (at Distortion Polarizer Material Polarizer Material Substrate Ultraviolet Visible Infrared Long near-infared T Quality Surface Beam Deviation R ontrast Linear Polarizers Linear Contrast Ultra-High [email protected] • (303) 833-4333 • www.meadowlark.com [email protected] Liquid Crystal

10 Liquid Crystal Devices Mounting Hardware Retarders Polarizers Controllers Ultra-High Contrast LinearPolarizers Fig. 1-10 Fig. 1-8Ultra-High Contrast UVPolarizer Ultra-High Contrast IRPolarizer www.meadowlark.com •(303) 833-4333• [email protected] Fig. 1-9Ultra-High Contrast VISPolarizer Fig. 1-11 Ultra-High Contrast LNIRPolarizer Polarizers Retarders Mounting Hardware Liquid Crystal Devices Liquid Crystal

Controllers

11 Contrast Ratio Contrast

® 4000 3500 3000 2500 2000 1500 1000 500 0 Ratio Contrast 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 0 Wavelength (nm) Wavelength Wavelength (nm) performance Polarizer UV VersaLight Typical Typical IR VersaLight Polarizer performance Polarizer IR VersaLight Typical 250 275 300 325 350 375 400 425 450 1000 1200 1400 1600 1800 2000 0

95 90 85 80 75 70 65 60

80 70 60 50 40 30 20 10 eflective polarizer eflective

100 Percent Transmission Percent Broadband use Broadband R angle acceptance Large Transmission Percent

Fig. 1-13

on a glass substrate and sets a new standard for the applications from view of field wide a and contrast durability, high requiring visible through infrared wavelengths, including the telecom region. VersaLight offers the performance C. quality 200° to of dichroic sheet temperature operating the extending while polarizers The VersaLight’s nature MicroWire constructionof allows it to In perform operation, as an polarizingexceptional . VersaLight reflects one polarization state and transmits another, both with VersaLight offershigh contrast. the broadest band material available. currently of any of view and highest field can be shaped as VersaLight needed and stacked to veryachieve high Large contrast VersaLight Polarizers aperture ratios. are up to 8" rounds. basis, on a custom available Key Benefits Key • • • MicroWires aluminum of layer thin a of constructed is VersaLight™ Fig. 1-15 Contrast Ratio Contrast 10000 9000 8000 7000 6000 5000 4000 3000 2000 1000 0 ed t t i sm an Tr Polarizers Wavelength (nm) ™

VersaLight Polarizer construction and use construction Polarizer VersaLight performance Polarizer NIR VersaLight Typical

450 550 650 750 850 950

95 90 85 80 75 70 65 60

100 Percent Transmission Percent

Fig. 1-12 VersaLight Fig. 1-14 [email protected] • (303) 833-4333 • www.meadowlark.com [email protected] Liquid Crystal

12 Liquid Crystal Devices Mounting Hardware Retarders Polarizers Controllers VersaLight Infrared NearInfrared Ultraviolet T Infrared NearInfrared Ultraviolet Thickness T Infrared NearInfrared Ultraviolet Substrate Material IR VersaLight isoptimized for 1000-2000nm NIR VersaLight is optimized for 450-1000nm UV VersaLight is optimized for 300-450nm fragile andcannot betouched. On ultraviolet VersaLight, the wire gridsurface willbe unprotected, Square Round Outside Dimensions Maximum T Wavelength Range Beam Deviation Surface Quality Spe ransmitted Wavefront Distortion (at 632.8nm) ypical contrast inreflection cifications emperature ™ Polarizers 0.7 mm 0.7 mm 1.1 mm Precision float glass Precision float glass UV grade fusedsilica > 30:1 ~ ~ ~ 1 to 140mm 1 to 200mm 400 nmto >2000 nm ≤ 1arc min 80-50 scratch anddig 200° Cfor singlelayer 5λperinch 5λperinch λ/4perinch

www.meadowlark.com •(303) 833-4333• [email protected] sales engineer for assistance. Custom sizes are available. Please contact your Meadowlark Optics Call for information on even higher contrast, doubledassemblies. Or de rin 2.0 in.diameter 1.0 in.diameter 0.5 in.diameter 0.5 xin. Dimension 2.0 xin. 1.0 xin. g

I n

fo r m ati Standard VersaLight o n n Square Round AR Coating NIR NIR NIR NIR NIR NIR UV UV UV UV UV UV IR IR IR IR IR IR VLS-050-IR VLS-050-NIR VLS-050-UV VLR-200-IR VLR-100-IR VLR-050-IR VLS-200-IR VLS-100-IR VLR-200-NIR VLR-200-UV VLR-100-NIR VLR-100-UV VLR-050-NIR VLR-050-UV VLS-200-NIR VLS-200-UV VLS-100-NIR VLS-100-UV Part Number Polarizers Retarders Mounting Hardware Liquid Crystal Devices Liquid Crystal Controllers 13

polarization s Beamsplitting polarizers provide two orthogonally two orthogonally provide Beamsplitting polarizers 90° by separated beams, conveniently polarized

High Contrast reflectance Low threshold High damage distortion wavefront transmitted Low polarized light is transmitted while is reflected. is reflected. Fig. 1-17 Key Benefits Key • • • • Meadowlark Optics right angle prisms are matched in pairs to produce high quality laser line beamsplitting polarizers with reflection.and transmission both in quality superiorwavefront The face hypotenuse of one prism is coated with a multilayer performance. laser for optimized coating beamsplitting dielectric prismsTwo protecting are the cemented critical together, factors. environmental performance-degrading coating from Each cube separates an unpolarized incident beam into linearly two orthogonal, polarized components with negligible Following the principle of absorption. pile-of-plates polarizers, p

Typical performance of a Laser Line performance Typical Polarizer Beamsplitting

Fig. 1-16 Laser Line Beamsplitting Polarizers Beamsplitting Line Laser [email protected] • (303) 833-4333 • www.meadowlark.com [email protected] Liquid Crystal

14 Liquid Crystal Devices Mounting Hardware Retarders Polarizers Controllers Fig. 1-18 Laser LineBeamsplitting Polarizers Limit R T Dimensional T Standard Wavelengths: Acceptance Angle Reflected Transmitted Beam Deviation Surface Quality R Clear Aperture s-polarized light p-polarized light Efficiency Reflected Transmitted Contrast Ratio (at 632.8nm) T Material Spe emperature Range ransmitted Wavefront Distortion ecommended Safe Operating eflectance (persurface) cifications

polarized beams,conveniently separated by 90 Beamsplitting polarizers provide two orthogonally olerance 500 W/cm -40° Cto +100°C ± 0.020in. 1064 and1550nm 532, 632.8,670,780,850, ± 2° ≤ 6arc min ≤ 3arc min 40-20 scratch anddig ≤ 0.25%at normalincidence Central 80%diameter ≥ 99%reflected ≥ 95%transmitted ≥ 20:1 ≥ 500:1 ≤ λ/5for p-polarized beam BK 7Grade fineannealed A, 300 mJ/cm 200 mJ/cm 2 2 2 , CW , 10ns,1064nm , 10ns,visible www.meadowlark.com •(303) 833-4333• [email protected] °

Call usfor pricingonnonstandard wavelengths orsizes. Custom sizes and wavelengths, over 400-1600 nm are available. Please substitute yourwavelength innanometers for λ. Or de incident andreflected laserbeams. direction liesprecisely intheplanedefined by the polarizer. Thetransmitted linearpolarization precise determination, usealaserlinebeamsplitting and unmounted polarizers we sell.For amore The polarization direction ismarked onallmounted SOLUTION polarizer?” “How can Ifindpreciselythepolarization axisofa PROBLEM rin A =BC(in.) g Dimensions

I n 1.00 0.50 fo r m ati o n n BP -100λ BP -050λ Number Part Polarizers Retarders Mounting Hardware Liquid Crystal Devices Liquid Crystal Controllers 15 . For °

Design Performance of IR3 Broadband IR3 Broadband of Design Performance Polarizer Beamsplitting Design Performance of IR1 Broadband of IR1 Broadband Design Performance Beamsplitting Polarizer Beamsplitting

High contrast Low reflectance Broad spectral range High damage threshold Key Benefits Key • • • • Fig. 1-22 Fig. 1-20 For applications involving broadband or tunable wavelength Optics Meadowlark presents a full line of sources, Broadband Beamsplitting Polarizers covering the visible to near infrared region. These cubes offer increasedpolarization needs. utility for a range of As with the Laser Line two Beamsplitting usable Polarizers, separated conveniently polarizationby forms 90 result, unpolarized input, unpolarized incident input, light will be equally 50% split, the Varying input polarization axis transmitted and reflected. the split ratio. will change

Beamsplitting Polarizer Beamsplitting Design Performance of IR1 Broadband IR1 Broadband of Design Performance Design Performance of Visible Broadband of Visible Broadband Design Performance Polarizer Beamsplitting

Fig. 1-21

Fig. 1-19 Broadband Beamsplitting Polarizers Beamsplitting Broadband [email protected] • (303) 833-4333 • www.meadowlark.com [email protected] Liquid Crystal

16 Liquid Crystal Devices Mounting Hardware Retarders Polarizers Controllers minimize losses. All four entrance and exit faces are antireflection coated to optimum performance. for alignment angular accurate and input collimated ranges.However,well- require designs broadband these aids in providing polarizers such broad usable wavelength these for glass high-index of choice Our described. previously Polarizers Beamsplitting Line Laser the to similar is line polarizer this of construction basic The Broadband Beamsplitting Polarizers R T Dimensional T NearIR3 NearIR2 NearIR1 Visible Wavelength Ranges Acceptance Angle Reflected Transmitted Beam Deviation Surface Quality R Clear Aperture s-polarized light p-polarized light Efficiency (average over wavelength range) Reflected Transmitted Contrast Ratio (at 632.8nm) T Material Spe emperature Range ransmitted Wavefront Distortion ecommended Safe Operating Limit eflectance (persurface) cifications olerance 500 W/cm -40° Cto +100° C ± 0.020in. 1150-1600 nm 820-1250 nm 620-900 nm 440-680 nm ± 2° ≤ 6arc min ≤ 3arc min 40-20 scratch anddig incidence ≤ 0.5%average at normal Central 80%diameter ≥ 98%reflected ≥ 95%transmitted ≥ 20:1 ≥ 500:1 ≤ λ/5for p-polarized beam SF 2 300 mJ/cm 200 mJ/cm

2 2 2

, CW , 10ns,1064nm , 10ns,visible

www.meadowlark.com •(303) 833-4333• [email protected]

Custom sizes are available. Please contact ourSales Department. Or de rin A =BC(in.) g Dimensions

I n 1.00 0.50 1.00 1.00 1.00 0.50 0.50 0.50 fo r m Near IR3(1150-1600nm) Near IR2(820-1250nm) ati Near IR1(620-900nm) Visible (440-680nm) o n n BB-100IR2 BB-050IR2 BB-100IR1 BB-050IR1 BB -100IR3 BB -050IR3 BB -100VIS BB -050VIS Number Part Polarizers Retarders Mounting Hardware Liquid Crystal Devices Liquid Crystal Controllers 17 that work over over Rhombs that work (see page 38). These These (see are page 38). Fresnel Fresnel etarder etarder R Liquid Liquid Crystal Devices for use in the chromatic Achromatic contrast over 350 to 410 nm 350 to over contrast Ultra-High Contrast UV Polarizer has excellent has excellent UV Polarizer Contrast Ultra-High Uncoated, air-spaced Glan-Laser Calcite Polarizers Polarizers Glan-Laser Calcite air-spaced Uncoated, 2300 nm 250 to be used from can

Fig. 1-23 For your achromatic retarder requirements, we recommend the recommend we requirements, retarder achromatic your For Crystalline Bi- fluoride. magnesium and crystallinequartz of out manufactured The standard ultraviolet version works to around 400 nm. are region ultraviolet the into deeper work that designs Custom also manufacture We available. down to Based 250 broad upon nm. wavelength ranges, the one reflectionadds each Reflection, Internal Total of principles Fresnel Rhombs eighth come wave of in retardance. quarter Optics Meadowlark your contact Please versions. wave half and or a custom quote. assistance sales engineer for in response we theFinally, toare customer, you, investigating the manufacturing of www.meadowlark. Please visit our website, ultraviolet region. the for engineer sales Optics Meadowlark your contact or com latest information and assistance on this or any region. in the ultraviolet have may polarization you requirements Fig. 1-24 Precision (see VersaLight ompound Zero Order (see Polarizer Contrast C vailable A etarders Ultra Ultra High Laser Line Beamsplitting Polarizers. Polarizers. Beamsplitting Line Laser is another ultraviolet polarizer option ustom Custom Options (see Thompson Polarizers page 18) also work (see page 6) is our most economical offering Glan Glan -

Wide range Wide R of range UV Polarizers/ Meadowlark quality and Standard

NEW Meadowlark Meadowlark Optics recently added Retarders to our standard product offering (see page 29). 29). page (see offering product standard our to Retarders with retarders quartz order multiple two of out made are These their optic axis directions being perpendicular to each other. Quartzretarders available. are wavelengths ultraviolet Specific are excellent for applications that require consistent performance also We over manufacture thermal variations. the in various wavelengths for Quartz Retarders Order Multiple we By using precision polishing ultraviolet region. techniques, can surface provide and excellent transmitted transmission, quality. wavefront Linear Polarizer and well works for low power applications with wavelengths between 325 Our - 400 nm. page 9) allows the user to obtain contrast ratios in excess of 10,000,000:1 and is optimized for wavelengths between 350 - slightly and transmission higher with option custom A nm. 410 Ultraviolet available. also is ratio contraast lower page 11) works below 300 nm, and It has a wide acceptance reflectivecan and polarizer. transmissive be used as both a angle and comes While in it a wide of range shapes and sizes. apply can Optics Meadowlark coatings, no with standard comes grid, wire the antireflectionopposite broadband coating either wavelength. specific a for V-coat a or region Ultraviolet the over Uncoated broad a over ratios contrast excellent give and nm 320 to down By wavelength range. using ultraviolet transmitting optical Meadowlark Optics can go deeper into cement, the ultraviolet calcite of type all manufacture can Optics Meadowlark region. Meadowlark Also, polarizers to in work the ultraviolet region. custom produce can Optics polarizers are these Silica, Fused Grade UV of out Manufactured Finally, region. ultraviolet the in wavlengths common for made Alpha - Barium Borate that Meadowlark Opitcs Please is contact currently pursuing. assistance. Optics sales engineer for Meadowlark your Polarizers custom and standard several has Optics Meadowlark Currently, polarizers that work in Our the ultraviolet region.

Meadowlark Meadowlark Optics is pleased to offer several polarizer and in region of the the ultraviolet light options that work retarder Collected on spectrum. this page are some of our offerings, both standard and If custom. you require any ultraviolet please polarization contact optics, your Meadowlark Optics assistance sales engineer for UV Optics UV Key Benefits Key • • • [email protected] • (303) 833-4333 • www.meadowlark.com [email protected] Liquid Crystal

18 Liquid Crystal Devices Mounting Hardware Retarders Polarizers Controllers Fig. 1-24 Glan-Thompson Polarizers Ordering Information Aperture (mm) Clear 10 10 10 10 5 5 8 8 8 5 5 8

Glan-Thompson Polarizer construction 1000 –1500 1000 –1500 1000 –1500 650 –1000 320 –2300 320 –2300 650 –1000 320 –2300 650 –1000 Wavelength Range (nm) 400 –700 400 –700 400 –700 Coating None None

MgF MgF MgF MgF MgF MgF MgF MgF MgF None AR 2 2 2 2 2 2 2 2 2 GTP –M05 GTP –M101250 GTP –M100825 GTP –M100550 GTP –M08 –1250 GTP –M08 –0825 GTP –M08 –0550 GTP –M05 –1250 GTP –M05 –0825 GTP –M05 –0550 GTP –M10 GTP –M08 Number Part www.meadowlark.com •(303) 833-4333• [email protected] • also available. are Polarizers Glan-Thompson range. Uncoated infrared near to visible the cover options coating antireflection Three forThompson Polarizers useover 320-2300nm. transmission.ultraviolet reason,this For Glan- recommend we material transmits down to 215 nm, the cement interface limits mounting.easy for housing calcite raw Although cylindrical Our Glan-Thompson Polarizers are supplied in a black anodized range. spectral broad a and performance ratio extinction excellent applications. Key advantages laserof Glan-Thompson Polarizers include power low and instrumentation optical precision Meadowlark Optics offers Glan-Thompson Polarizers, intended for isproduced. linearpolarizer efficient polarizers,calcite very our a in angles prism internal controlling precisely crystal. By birefringent occurring naturally a is Calcite • Key Benefits Singlelayer MgF Uncoated R Extinction Ratio Material R Wavelength Range Acceptance Angle Beam Deviation Spe ecommended Safe Operating Limit eflectance (persurface, at normalincidence) Excellentratioextinction Broad spectr Broad cifications 2 a l rangel clear aperture 10,000:1 over central 2/3of Grade AOptical Calcite 25-30 W/cm 320-2300 nm ± 5° ± 3arc min ~ 1.5% ~ 4.5% 2 CW

Polarizers Retarders Mounting Hardware Liquid Crystal Devices Liquid Crystal Controllers 19

­ization or polarization Polarized Polarized Light in Optics and educe back reflection R Beam separation Combines polarizer and in retarder one component • Retarder Polarizer/Zero-Order Dichroic • Retarder Beamsplitting Polarizer/Zero-Order Custom sizes are available. Please contact our Sales Department. our Sales contact Please available. are sizes Custom , page 5. page , Spectroscopy Both designs take advantage of the handedness changecircularly polarizedof bybeam Again, changinga upon reflection. the handedness of the circularly polarized beam, back reflections by the polarizer. blocked are The degree of this blocking is commonly used to evaluate it can be “isolation”, Termed circular polarizer performance. considered similar to the extinction ratio linear polarizer. specification of a which beam incident an of percentage the represents Isolation is blocked on its second pass through the circular polarizer. returnedHigh isolation implies less light will be to the source. A more detailed description of the characteristics of circularly polarized light is provided in Key Benefits Key • • • or light polarized left-circular either transmit CircularPolarizers right-circular polarized light for an input beam of any polarization state. When circularly polarized light is reflected, changing left- to right- itsdirection reverses, propagation polarizer same the Therefore vice-versa. and polarization circular that produces circular polarization of the incident beam will the return beam. block Achievement of optical isolation using the circular polarizers specularreflection be the that requires catalog this in described and that no significant modification occur in any intervening medium between the depolarreflector and optical isolator. offer circular polarizers We each for use in two basic designs, in air: Dichroic Circular Polarizer construction Polarizer Circular Dichroic Optical isolation using a circular polarizer using a circular isolation Optical

Fig. 1-25

Fig. 1-26 ircular Polarizers ircular C with Isolation Optical [email protected] • (303) 833-4333 • www.meadowlark.com [email protected] Liquid Crystal

20 Liquid Crystal Devices Mounting Hardware Retarders Polarizers Controllers Dichroic Circular Polarizers R T Unmounted Mounted Diameter T R NearInfrared Visible Beam Deviation Surface Quality NearInfrared Visible T Isolation Standard Wavelengths Substrate Material Retarder Material Polarizer Material these polarizers. Prolonged exposure to strong ultraviolet radiationmaydamage Spe emperature Range ransmitted Wavefront Distortion (at 632.8nm) ecommended Safe Operating Limit eflectance (persurface) cifications

olerance 1 W/cm -20° Cto +50°C +0/-0.010 in. ±0.005 in. ≤ 0.5%at normalincidence ≤ 2arc min ≤ 1arc min 40-20 scratch anddig ≤ λ/2 ≤ λ/5 >99.8% 1064 and1550nm 532, 632.8,670,780,850, BK 7Grade fineannealed A, Birefringent Polymer Dichroic Polymer 2 , CW www.meadowlark.com •(303) 833-4333• [email protected] available on a custom basis. Please call for application assistance. also are wavelengthapplications.single versions for Achromatic designed are Polarizers Circular Dichroic standard Our direction parallel tothemarks onthehousing. polarization beam input polarized linearly a align to polarizer circular transmission,the maximumrotate Forpropagation. beam of direction the in marking indicator the position proper of orientation your Dichroic Circular Polarizer. Be sure requiresto effect polarization desired the of Achievement lossesare minimized.ensure surface reflection transmitted wavefront distortion. Anti­ re eoodr eadr (ae 30-31) (page retarders zero-order True optimumperformance. ensures direction polarization linear the wave retarder. quarter- zero-order Accurately aligning the retarder true fast axis at 45° to and polarizer linear a dichroic of consist Polarizers Circular Dichroic Optics Meadowlark • • • Key Benefits between high quality optical flats, providing less than less providing flats, optical quality high between Once aligned, both polarizer and retarder materials are laminated tothefinaltolerances performance. alsocontribute Polarizers.Circular Dichroic our of assemblyretardanceTight hand circularoutput. hand circularoutput.Append a“-RH”to yourpartnumber for right- left-hand circularoutput.Please call to request aquote for right- Meadowlark Optics standard DichroicCircularPolarizers provide Or Diameter Diameter de Low transmittedLow wavefront distortion diametersLargeavailable isolation High 2.00 1.00 1.00 0.50 1.00 (in.) (in.) rin g

I n fo Clear Aperture Clear Aperture r m 1.20 0.70 0.40 0.40 0.80 (in.) (in.) ati o n n Unmounted Mounted Thickness Thickness 0.50 0.35 0.25 0.13 0.26 (in.) (in.) reflection coated windows reflection r ue i the in used are CPM-200λ CPM-100λ CPM -050λ CP-100λ CP -050λ Number Number Part Part λ /5 /5

Polarizers Retarders Mounting Hardware Liquid Crystal Devices Liquid Crystal Controllers 21 Part Number BS - 050 - λ BS - 100 - λ , 10 ns, visible , 10 ns, 1064 nm , CW 2 2 2 300 mJ/cm 200 mJ/cm BK 7 Grade A, fine annealed BK 7 Grade ≤ λ/5 80% diameter Central normal incidence ≤ 0.5% at and dig 40-20 scratch min ≤ 3 arc ± 2° 532, 632.8, 670, 780, 850, 1064 and 1550 nm ±0.020 in. +50° C -20° C to 500 W/cm

(in.) 0.40 0.80 n o Clear Aperture ati m r fo olerance n I

g /350 . Aligning the fast axis to within 1° ensures ensures 1° within to axis fast the Aligning waves. /350 λ (in.) 0.50 1.00 rin ons cificati High isolation available Large diameters distortion wavefront Low transmitted de Cube Dimensions eflectance (per surface) eflectance Operating Safe ecommended ransmitted Wavefront Distortion Wavefront ransmitted emperature Range emperature Or Spe . λ for in nanometers your wavelength substitute Please 400-1600 wavelengths over Custom are available. sizes Custom a obtain to our Sales Department nm are available. Please contact quote. custom Material T nm) 632.8 (at Clear Aperture R Quality Surface Beam Deviation Angle Acceptance Wavelengths Standard Dimensional T T R Limit greater greater than 99.8% source isolation from specular back reflections. Meadowlark Optics Beam Separators are specially designed for for designed specially Separatorsare Beam Optics Meadowlark consists Assembly of a true zero-order laser line applications. at axis fast its with oriented 30-31) (page retarder quarter-wave 45° to the transmission axis The Polarizer oftransmitted (page beam 13-14). is a circularly Laser Line Beamsplitting beam polarization of the input state. regardless polarized, Our true Precision zero-order Retarders are one quarter-wave ± within Key Benefits Key • • •

Beam Separator function Beam Separator

Fig. 1-27 Beam Separators Beam [email protected] • (303) 833-4333 • www.meadowlark.com [email protected] Liquid Crystal

22 Liquid Crystal Devices Mounting Hardware Retarders Polarizers Controllers Polarizer Selection Chart Beam Separator Dichroic Circular Circular Broadband Laser Line VersaLight Beamsplitting Glan-Thompson Ultra-High Contrast High Contrast Precision Dichroic Polarizer Type Linear standard products Page custom options 21 20 15 13 11 18 9 8 6 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • robust opto-mechanical design excellent wavefront quality high isolation performance achromatic versions for broadband large diameters available high isolation broad spectral performance high damage threshold high contrast high damage threshold low reflectance high contrast up to 170mmapertures available visible andnearinfrared versions high power handlingcapability specularly reflective operation broad spectral performance multilayer BBAR coatings also available broad spectral performance excellent extinction ratio excellent ultraviolet product option highest available contrast ratio high temperature resistance broad spectral performance wavelength-specific design high transmission high contrast limited power handlingcapability most economical linearpolarizer choice ultraviolet, visible,nearinfrared versions custom shapesandlarge apertures available www.meadowlark.com •(303) 833-4333• [email protected] Product Features

500 100015002000 500 100015002000 500 100015002000 500 100015002000 500 100015002000 500 100015002000 500 100015002000 500 100015002000 500 100015002000 5001000 Wavelength Range 15002000 Polarizers Retarders Mounting Hardware Liquid Crystal Devices Liquid Crystal Controllers 23 1.20 in. 1.20 in. (diameter) 5, 8, 10 mm 0.40, 0.80 in. 0.40, 0.80 in. 0.40, 0.80 in. 0.40, 0.70 in. 0.40, 0.80 in. Clear Aperture 0.40, 0.70, 0.80, 0.40, 0.70, 0.80, 0.40, 0.70, 0.80 in. ± 5° ± 5° ± 2° ± 2° ± 5° ± 2° ± 2° ± 45° ± 10° Angle Acceptance Polarizer and Retarder sets available, see page 42. see page sets available, and Retarder Polarizer

λ λ/5 λ/5 λ/4 λ/5 UV: λ/2 UV: VIS: λ/5 VIS: λ/5 NIR: λ/2 NIR: λ/2 IR: 5λ per inch NIR: 5λ per inch UV: λ/4 per inch UV: (maximum at 632.8 mn) at (maximum 1λ per 10mm diameter Transmitted Wavefront Distortion Wavefront Transmitted

3 arc min 3 arc 5 arc min 5 arc 3 arc min 3 arc 1 arc min 1 arc 3 arc min 3 arc (maximum) UV: 2 arc min 2 arc UV: VIS: 1 arc min VIS: 1 arc VIS: 1 arc min VIS: 1 arc Ref: 6 arc min 6 arc Ref: Ref: 6 arc min 6 arc Ref: NIR: 2 arc min NIR: 2 arc NIR: 2 arc min NIR: 2 arc Trans:3 arc min arc Trans:3 Trans:3 arc min arc Trans:3 Beam Deviation ~4%

0.25% 0.50% 0.50% 0.50% 1.50% 0.50% VIS: 0.50% (uncoated) NIR: 0.50% UV: ~4.25% UV: Reflectance

~1.50% (coated) ~4.50% (uncoated) (maximum per surface) (maximum Circular Beamsplitting

Linear Polarizer Selection Chart Selection Polarizer [email protected] • (303) 833-4333 • www.meadowlark.com [email protected]