Anderson & Steinssen, Inc. Crystalline Products Company Overview Anderson & Steinssen, Inc. (Abbreviation: ANS) is one of the most reputable and largest laser crystal manufacturers in the world. Our main optical crystal products include the YAG series, which we supply to our cooperative research centers and universities. We have also successfully expanded to manufacturing NLO crystal, BIBO, LBO, KTP, etc, which are widely used in industrial, military, medical, cosmetic and other fields.
ANS has a long-term commitment to improvement of and research in growth technology. At ANS, we have crystal growth technology including induction heating and resistance heating, which can meet different customers’ requirements. We are now serving customers throughout America, Korea, Canada, Japan and Germany. Crystal Products
Product Name Formula Yttrium aluminium garnet YAG Neodymium-doped yttrium aluminium garnet Nd:YAG Ytterbium-doped yttrium aluminium garnet Yb:YAG Neodymium-cerium double-doped yttrium aluminium garnet (Nd,Ce):YAG
Chromium (IV)-doped yttrium aluminium garnet Cr4:YAG Erbium-doped yttrium aluminium garnet Er:YAG Holmium-doped yttrium aluminium garnet Ho:YAG Samarium-doped yttrium aluminium garnet Sm:YAG Dysprosium-doped yttrium aluminium garnet Dy:YAG Holmium-chromium-thulium triple-doped yttrium aluminium Ho:Cr:Tm:YAG garnet Terbium-doped yttrium aluminium garnet Tb:YAG Thulium-doped yttrium aluminium garnet Tm:YAG Cerium(III)-doped yttrium aluminium garnet Ce:YAG Neodymium-doped yttrium lithium fluoride Nd:YLF Calcium gadolinium aluminum oxide CALGO Yttrium aluminum borate YAB
Yttrium orthovanadate YVO4
Neodymium-doped yttrium orthovanadate Nd:YVO4
Calcium fluoride CaF2
Ytterbium-doped calcium fluoride Yb:GF2 Yttrium calcium oxyborate YCOB Gadolinium calcium oxyborate GdCOB Potassium yttrium tungstate KYW Ytterbium-doped potassium yttrium tungstate Yb:KYW Potassium gadolinium tungstate KGW Ytterbium-doped potassium gadolinium tungstate Yb:KGW Neodymium-doped potassium gadolinium tungstate Nd:KGW
Lutetium(III) oxide Lu2O3 Strontium yttrium borate BOYS Ytterbium-doped strontium yttrium borate Yb:BOYS Yttrium orthosilicate YSO Lutetium oxyorthosilicate LSO Ytterbium-doped lutetium oxyorthosilicate Yb:LSO Gadolinium oxyorthosilicate GSO Ytterbium-doped gadolinium orthosilicate Yb:GSO Neodymium-doped gadolinium gallium garnet Nd:GGG
Chromium-doped aluminum oxide Cr:Al2O3
Titanium-doped aluminum oxide Ti:Al2O3 Potassium titanyl phosphate KTP Lithium triborate LBO Beta-barium borate β-BBO Bismuth borate BIBO
Zinc-germanium diphosphide ZnGeP2 Potassium titanyl arsenate KTA Terbium gallium garnet TGG
Cerium-doped lanthanum bromide Ce3:LaCl3 Rubidium titanyl phosphate RTP
Lithium niobate LiNbO3
Lithium iodate LiIO3
Magnesium-oxide-doped lithium niobate MgO:LiNbO3 Erbium-and-chromium-doped yttrium scandium gallium garnet (Er,Cr):YSGG Terbium scandium aluminum garnet TSAG Caesium lithium borate CLBO Nd:YAG Ce:YAG Ho:YAG
LBO LiNbO3 Nd:YLF
Nd:YVO4 TSAG Yb:YAG Neodymium-Doped Yttrium Aluminum Garnet (Nd:YAG ) Crystal
Nd:YAG is the oldest and one of the most commonly-used laser host crystals. It is used in multiple sectors including medical, military, industrial, and science. Since it combines great advantages in many of its basic properties, Nd:YAG is the ubiquitous choice for near-infrared solid-state lasers and their frequency-doubler, tripler, and higher order multipliers. Based on client requirements, we are able to customize the sizes of these crystals to meet the customer’s needs.
Basic Properties of Nd:YAG
Chemical Formula: Nd:Y3Al5O12
Crystal structure: Cubic
Lattice constant: 12.01Å
Melting point: 1970°C
Density: 4.5g/cm3
Reflective Index: 1.82
Thermal Expansion Coefficient: 7.8x10-6 /K <111>
14, 20°C Thermal Conductivity (W/m/K): 10.5, 100°C
Mohs hardness: 8.5
Stimulated Emission Cross Section: 2.8x10-19 cm-2
Relaxation Time of Terminal Lasing Level: 30 ns
Radiative Lifetime: 550 us
Spontaneous Fluorescence: 230 us
Linewidth: 0.6 nm
Loss Coefficient: 0.003 cm-1 @ 1064nm Neodymium-Doped Yttrium Orthovanadate (Nd:YVO4)
Among the current commercial laser crystals, Nd:YVO4 is the most efficient for diode pumping, especially for lasers with
low to middle power density. A key reason is that Nd:YVO4's absorption and emission features surpass those of Nd:YAG. In
diode-pumped lasers, Nd:YVO4 crystals can be paired with high nonliner optical (NLO) coefficient crystals (LBO,BBO,or KTP) to frequency-shift the output from the near infrared to green, blue, or even UV. This unique ability is ideal because it means that these lasers can be used for a wide range of applications of lasers, including machining, material processing, spectroscopy, wafer inspection, light displays, medical diagnostics, laser printing, data storage, etc. Nd:YVO4 based diode-pumped solid-state lasers are rapidly overtaking the markets traditionally dominated by water-cooled ion lasers and lamp-pumped lasers, especially when compact design and single-longitudinal-mode outputs are required.
Nd:YVO4’s advantages over Nd:YAG 1. Almost five times larger absorption efficiency over a wide pump bandwidth centered around 808 nm (Thus, the dependency on pump wavelength is much lower, and there is a strong tendency towards the single-mode output.) 2. About three times higher stimulated emission cross-section at the lasing wavelength of 1064nm 3. Lower lasing threshold and higher slope efficiency 4. As a uniaxial crystal with a large birefringence, the emission is linearly polarized.
Basic Properties of Nd:YVO4
Atomic Density: 1.26x1020 atoms/cm3 (Nd1.0%)
Zircon Tetragonal, space group D4h-I4/amd Crystal Structure: a=b=7.1193A,c=6.2892A
Density; 4.22g/cm3
Mohs Hardness: 4-5(Glass-like)
-6 αa=4.43x10 /K Thermal Expansion Coefficient(300K): -6 αc=11.37x10 /K
//C:0.0523W/cm/K Thermal Conductivity Coefficient(300K): ⊥C:0.0510W/cm/K Anderson & Steinssen, Inc Address: Suite 220, 1201 Monster Road SW Renton, WA98057 Tel：425.336.0366 Fax：425.529.9207 Website: www.andersonandsteinssen.com Email: [email protected]