FemtoLux green

Microjoule Class Industrial Grade Femtosecond Green Fiber Lasers
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datasheet
  • Up to 1.5 W at 515 nm
  • Up to 1.5 µJ/pulse
  • 300 fs – 5 ps pulses
  • Single shot – 5 MHz pulse repetition rates
  • Burst shape active control
  • Up to 1.5 W at 515 nm
  • Up to 1.5 µJ/pulse
  • 300 fs – 5 ps pulses
  • Single shot – 5 MHz pulse repetition rates
  • Burst shape active control

Features & Applications

Features

  • Output power 1.5 W at 515 nm or 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
  • Multiphoton microscopy

Description

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 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.

Specifications

ModelFemtoLux green
MAIN SPECIFICATIONS 1)
Central wavelength515 ± 1 nm
Minimal pulse duration (FWHM)< 300 fs
Pulse duration tuning range300 fs … 5 ps
Maximal average output power 2)> 1.5 W
Power long term stability (StdDev) 3)≤ 0.5 %
Maximal pulse energy 2)1.5 µJ
Pulse energy stability (StdDev) 4) < 2 %
Laser pulse repetition rate (PRRL ) range 5)1 – 5 MHz
Pulse repetition rate after pulse picker 5)PRR = PRRL / N, N=1, 2, 3, … , min 10 kHz
External pulse gatingvia TTL input
Burst mode 6)1 – 10 pulses
Max burst energy 5 µJ
Burst shape controlvia analog input
Power attenuation0 – 100 % by software or via analog input
Polarization orientationlinear, vertical
Polarization extinction ratio> 1000 : 1
M2< 1.2
Beam divergence (full angle)<1.0 mrad
Beam pointing stability (pk-to-pk) 7)< 30 µrad
Beam diameter (1/e2) at 20 cm distance from laser aperture1.0 ± 0.2 mm
OPERATING REQUIREMENTS
Mains requirements100 ... 240 V AC, 5A, single phase 47... 63 Hz
Maximal power consumption< 500 W
Operating ambient temperature15 – 30 °C
Relative humidity10 – 80 % (non-condensing)
Air contamination levelISO 9 (room air) or better
PHYSICAL CHARACTERISTICS
Coolingair, passive
Laser head size (L×W×H)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 length5 m
CLASSIFICATION
Classification according EN60825-1CLASS 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. At 1 MHz PRRL during 24 h of operation after warm-up under constant environmental conditions.
  4. At 1 MHz PRRL under constant environmental conditions.
  5. When pulse picker is set to transmit every pulse.
  6. Time interval between the pulses is about 20 ns.
  7. Beam pointing stability is evaluated as a movement of the beam centroid in the focal plane of a focusing element.

Note: It is recommended to use clean air generator with FemtoLux green in order to assure it‘s performance stability.

Performance

Drawings

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