ULTRAFAST FIBER LASERS

LightWire Compact Fiber Seeders for FFS series Femtosecond Lasers

FEATURES

▶ Pulse energy > 250 nJ at repetition rate < 200 kHz

▶ Compressed or chirped broadband pulses

▶ Down to 300 fs pulses available after compression (for FFS100CHI and FFS200CHI)

▶ Pulse duration < 130 fs (for FFS200)

APPLICATIONS

▶ Seeding femtosecond CPA systems

▶ Ultrafast spectroscopy

▶ Time-domain terahertz LightWire FFS series fiber lasers are bandwidth enables amplification spectroscopy dedicated for seeding solid state of pulses with < 300 fs compressed femtosecond Yb:YAG based CPA duration. Special feature of FFS200CHI systems. Ekspla offers FFS lasers either laser is customizable chirp profile to with femtosecond pulse duration match compressor design of the CPA directly from fiber, or with chirped system. pulses. Broad up to 12 nm spectral

30 0.8 300 0.7 25 250 0.6 20 energy 200 0.5

15 0.4 150

Energy, nJ 0.3 10

100 Output power, mW

Output power, mW power 0.2 50 5 0.1

0 0 0.0 0.1 1 10 0 10 20 30 40 50 Repetition rate, MHz Repetition rate, MHz

Typical depedence of average power on the Typical depedence of average power repetition rate for FFS200CHI laser (blue curve) and pulse energy (red curve) on the repetition rate for FFS100CHI-AOM laser

6 SAVANORIU AV. 237, LT-02300 VILNIUS, LITHUANIA TEL +370 5 2649629 E - MAIL [email protected] WWW.EKSPLA.COM REV. 20200612 ULTRAFAST FIBER LASERS LightWire FFS

SPECIFICATIONS ¹⁾ Model FFS100CHI FFS200CHI FFS200 Central wavelength 1030 ± 1 nm 1064 nm Spectral bandwidth 8 ± 1 nm up to 12 nm 30 nm (typical) Pulse duration from the laser 7 ± 2 ps (chirped) > 50 ps (chirped) < 130 fs Compressed pulse duration <300 fs down to 300 fs NA Chirp profile linear custom ²⁾ NA Oscillator pulse repetition rate 52 ± 3 MHz 40 ± 2 MHz 26 kHz – 52 MHz 200 kHz – 52 MHz 20 kHz – 40 MHz Pulse repetition rate with pulse picker ³⁾ (PRR = PRRosc / N, (PRR = PRRosc / N, (PRR = PRRosc / N, N = 1, 5, 6, ..., 2000) N = 1, 5, 6, ..., 2000) N = 1, 4, 5, ..., 2000) > 200 mW at 10 MHz Output power > 50 mW / > 25 mW > 100 mW at 1 MHz > 200 mW / > 100 mW (without/with pulse picker) > 25 mW at 100 kHz Pulse energy > 250 nJ at repetition rates > 1 nJ / > 0.5 nJ > 5 nJ / > 2.5 nJ (without/with pulse picker) < 200 kHz Polarization linear, > 100:1 extinction linear, > 10:1 extinction FC/APC connector or collimator FC/PC connector ⁵⁾ or Optical output collimator & isolator node ⁴⁾ with mounting flange (optional) collimated beam (optional) Output fiber length up to 5 m up to 3 m up to 1.4 m 0.9 ± 0.1 mm or 1.3 ± 0.1 mm Beam diameter 0.9 ± 0.1 mm 2 ± 0.2 mm or 2.1 ± 0.2 mm Beam height NA 38 mm NA Beam quality M² < 1.1 M² < 1.5 photodiode output for oscillator train, Pulse train monitoring TTL synch pulse for laser output (when pulse picker included) Dimensions of collimator (D × L) Ø33.02 × 11.76 mm Control interface USB, CAN, RS232, LAN, (WLAN optional) Power supply (AC/DC adapter included) 100 – 240 V, 50 – 60 Hz AC Power consumption maximal 230 W (typical 60 W) Operating conditions 10 – 30 °C, humidity – not condensing

1) Due to continuous improvement all specifications are subject to change without notice. DANGER 1.0 2) Chirp profile will be optimized by Ekspla to match

customer compressor design. VISIBLE AND/OR INVISIBLE LASER RADIATION AVOID EYE OR SKIN EXPOSURE TO DIRECT 3) REFLECTED OR SCATTERED RADIATION 0.8 Pulse picker is an option for FFS100 and FFS200 Yb:Fiber, 970 – 1100 nm models. It supports external gating. FFS200CHI Max. 500 mW, pulse 100 fs CLASS IV LASER PRODUCT includes internal frequency divider, which enables 0.6 pulse repetition rate reduction but does not support external gating. 0.4 4) FFS200CHI model is provided with collimator & Relative intensity, a.u. isolator node with dimensions 138×66.6×52 mm. 0.2 5) The connector is not suitable to connect with single mode fiber. 0.0 1024 1026 1028 1030 1032 1034 1036 Wavelength, nm

Typical spectrum from FFS200CHI laser

1.0 Autocorrelation 1.0 FWHM = 9.1 nm function Gaussian fit 0.8 0.8

τpulse = 298 fs 0.6 0.6

0.4 0.4

Relative intensity, a.u.

Relative intensity, a.u.

0.2 0.2

0.0 0.0 -800 -600 -400 -200 0 200 400 600 800 1015 1020 1025 1030 1035 1040 1045 Delay, fs Wavelength, nm Typical FPS100CHI compressed pulse autocorrelation Typical spectrum from FFS100CHI laser

REV. 20200612 SAVANORIU AV. 237, LT-02300 VILNIUS, LITHUANIA TEL +370 5 2649629 E - MAIL [email protected] WWW.EKSPLA.COM 7 ULTRAFAST FIBER LASERS LightWire FFS

1.0 1.0 Autocorrelation function

. . Gaussian fit 0.8 0.8

τpulse = 130 fs 0.6 0.6

0.4 0.4

Relative intensity, a.u

Relative intensity, a.u

0.2 0.2

0.0 0.0 1040 1050 1060 1070 1080 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 Wavelength, nm Delay, ps

Typical spectrum from FFS200 laser Typical autocorrelation from FFS200 laser

DRAWINGS 257 105 226

482 315 135. 8 88 95

449

Ø6.7 5 126 145 315

36

LightWire FFS series control unit outline drawing LighWire FFS series "Compact" version drawing. (19" rack mountable version) Example only. Actual dimensions depends on a selected laser configuration and options. Please enquire

Three Ø3.18 mm thru holes 120° apart on a 29.21 mm 121.1 diameter bolt circle 52 104 66. 6 61. 8 Ø2 0 Ø3 3

38 6.5 38

8.89 127 Three 0-80 tapped holes 11.76 138 120° apart on a 29.21 mm diameter bolt circle 17.15 Ø6.5 LightWire FFS100CHI laser collimator LightWire FFS200CHI laser flange outline drawing for beam isolator & collimator unit diameters 0.9 mm and 1.3 mm outline drawing

~27.15

Ø33.25±0.25 Ø20.09±0.08

LightWire FFS100CHI/200 laser collimator All dimensions flange outline drawing for beam diameter are in millimetres. 33 mm OD flange 2.1/2.0 mm

8 SAVANORIU AV. 237, LT-02300 VILNIUS, LITHUANIA TEL +370 5 2649629 E - MAIL [email protected] WWW.EKSPLA.COM REV. 20200612