Compact Fiber Seeders for 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 spectroscopy
LightWire FFS series fiber lasers are dedicated for seeding solid state femtosecond Yb:YAG based CPA systems. Ekspla offers FFS lasers either with femtosecond pulse duration directly from fiber, or with chirped pulses. Broad up to 12 nm spectral bandwidth enables amplification of pulses with <300 fs compressed duration. Special feature of FFS200CHI laser is customizable chirp profile to match compressor design of the CPA system.
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
Pulse repetition rate with pulse picker ³⁾
26 kHz – 52 MHz
(PRR = PRRosc / N,
N = 1, 5, 6, ..., 2000)
200 kHz – 52 MHz
(PRR = PRRosc / N,
N = 1, 5, 6, ..., 2000)
20 kHz – 40 MHz
(PRR = PRRosc / N,
N = 1, 4, 5, ..., 2000)
Output power (without/with pulse picker)
>50 mW / >25 mW
>200 mW at 10 MHz
>100 mW at 1 MHz
>25 mW at 100 kHz
>200 mW / >100 mW
Pulse energy (without/with pulse picker)
> 1 nJ / > 0.5 nJ
>250 nJ at repetition rates <200 kHz
>5 nJ / >2.5 nJ
Polarization
linear, > 100:1 extinction
linear, > 10:1 extinction
Optical output
FC/APC connector or collimator with mounting flange (optional)
collimator & isolator node ⁴⁾
FC/PC connector ⁵⁾ or collimated beam (optional)
Output fiber length
up to 5 m
up to 3 m
up to 1.4 m
Beam diameter
0.9 ± 0.1 mm or 1.3± 0.1 mm or 2.1 ± 0.2 mm
0.9 ± 0.1 mm
2 ± 0.2 mm
Beam height
NA
38 mm
NA
Beam quality
M² < 1.1
M² < 1.5
Pulse train monitoring
photodiode output for oscillator train, 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.
2) Chirp profile will be optimized by Ekspla to match customer compressor design.
3) Pulse picker is an option for FFS100 and FFS200 models. It supports external gating. FFS200CHI includes internal frequency divider, which enables pulse repetition rate reduction but does not support external gating.
4) FFS200CHI model is provided with collimator & isolator node with dimensions 138×66.6×52 mm.
5) The connector is not suitable to connect with single mode fiber.
DRAWINGS
商品属性 [波长] 1064 nm [脉宽] < 130 fs [脉冲能量] >5 nJ / >2.5 nJ [平均功率] >200 mW / >100 mW [重复频率] 40 ± 2 MHz