Microjoule Class Femtosecond Green Fiber Lasers
FEATURES
▶ Output power 1.5 W at 515 nmor 3 W at 1030 nm
▶ 300 fs … 5 ps tunable pulse duration
▶ Up to 1.5 µJ/pulse and 5 µJ/burst (at 515 nm)
▶ Up to 3 μJ/pulse and 10 μJ/burst (at 1030 nm)
▶ Excellent beam quality M² < 1.2
▶ Individual pulse control
▶ Burst shape control
▶ Passive cooling (convective) of laser head
▶ 24/7 operation
APPLICATIONS
▶ Marking and structuring
▶ Volume modification of transparent materials
▶ Micromachining of brittle materials
▶ Photopolymerization
▶ Ophthalmologic surgery
▶ Biological Imaging
▶ Pumping femtosecond OPO/OPA
In some important applications like multiphoton polymerization, writing of fiber Bragg gratings, volume modification of transparent materials, nonlinear microscopy, silicon and sapphire scribing, marking of some kind of materials, different wavelength than fundamental output is needed. Important point is that requirements for sufficient pulse energy as well as beam quality remains. Having in mind such needs, FemtoLux green , femtosecond fiber laser, was developed. Unlike other commercially used fiber lasers, FemtoLux provides perfectly linearly polarized light with polarization extinction ratio >1000:1. This allows generation of second harmonic with great efficiency better than 50% and excellent spatial beam and temporal pulse parameters. Fiber based front-end allows multiple pulse train control functions like: wide range of operating pulse repetition rates, individual pulse gating up to 10 MHz, burst mode with active burst envelope shaping, real time pulse amplitude control. Pulse duration can also be automatically tuned from 300 fs up to 5 ps. Providing more than 1.5 W average power, it’s reasonably high wall plug efficiency as well as smart heat management makes laser head passively cooled with only ~60 W of heat dissipations, when operating at full power.
SPECIF ICATIONS 1 )
Model
FemtoLux 3
FemtoLux green
MAIN SPECIFICATIONS
Wavelength
1030 ± 2 nm
515 ± 1 nm
Minimal pulse duration (FWHM)
< 300 fs
Pulse duration tuning range
300 fs – 5 ps
Maximal average output power 2)
> 3 W
> 1.5 W
Power fluctuations (pk-to-pk) 3)
< ±2 %
Maximal pulse energy 2)
3 µJ
1.5 µJ
Pulse energy stability (Std. dev.) 4)
< 2 %
Laser pulse repetition rate (PRRL) range 5)
1 – 5 MHz
Pulse repetition rate after pulse picker
PRR = PRRL / N, N=1, 2, 3, … , min 10 kHz
External pulse gating
via TTL input
Burst mode 6)
1 – 10 pulses
Max burst energy
10 µJ
5 µJ
Burst control
via analog input
Power attenuation
0 – 100 % from software or via analog input
Polarization orientation
linear, vertical
Polarization extinction ratio
>1000:1
M2
< 1.2
Beam divergence (full angle)
<1.0 mrad
Beam pointing stability (pk-to-pk) 7)
< 50 µrad
Beam diameter (1/e2)
at 20 cm distance from laser aperture
2.0 ± 0.3 mm
1.0 ± 0.2 mm
OPERATING REQUIREMENTS
Mains requirements
100 ... 240 V AC, 5A, single phase 47... 63 Hz
Maximal power consumption
< 500 W
Operating ambient temperature
15 – 30 °C
Relative humidity
10 – 80 % (non-condensing)
Air contamination level
ISO 9 (room air) or better
PHYSICAL CHARACTERISTICS
Cooling
air
Laser head size (L×W×H)
464 × 363 × 129 mm
620 × 363 × 129 mm
Power supply unit size (L×W×H)
449 × 436 × 140 mm (stand-alone)
or 483 × 436 × 140 mm (19" rack mountable)
Umbilical length
5 m
CLASSIFICATION
Classification according EN60825-1
CLASS 4 laser product
1) Due to continuous improvement, all specifications are subject to change without notice.
2) See typical power and energy curves for other pulse repetition rates.
3) In bandwidth bellow 1 Hz during 24 h operation under constant environmental conditions.
4) In 1 MHz – 0.1 Hz bandwidth.
5) When pulse picker is set to transmit every pulse.
6) Time interval between the pulses is about 20 ns.
7) Defined as short term < 2 min beam angular stability.
Note: It is recommended to use clean air generator with FemtoLux green in order to assure it‘s performance stability
PERFORMANCE
SOFTWARE
APPLICATIONS EXAMPLES
DRAWINGS
商品属性 [波长] 1030 ± 2 nm [脉宽] 300 fs – 5 ps [脉冲能量] 3 µJ [平均功率] > 3 W [重复频率] 1 – 5 MHz