NL940 series

High Energy Temporaly Shaped Nanosecond Nd:YAG Lasers
  • High energy nanosecond lasers
  • Temporaly shaped 3 – 10 ns pulses
  • Pulse energies up to 10 J
  • 10 Hz pulse repetition rate
  • High energy nanosecond lasers
  • Temporaly shaped 3 – 10 ns pulses
  • Pulse energies up to 10 J
  • 10 Hz pulse repetition rate

Features & Applications


  • Variable temporal pulse shape
  • Up to 10 J output energy
  • 10 Hz repetition rate
  • 3 – 10 ns adjustable pulse duration
  • 1064 or 532 nm output wavelength
  • Spatial flat top beam profile
  • Fiber front end output amplified in diode pumped regenerative amplifier


  • OPCPA pumping
  • Front end for power amplifiers
  • Ti: Sapphire pumping
  • Laser peening – material hardening by laser-induced shock wave
  • Plasma and shock physics


Main laser feature is output of temporaly shaped pulses based on electrooptical modulator driven by programmable arbitrary waveform generator (AWG). Pulse shaping resolution is 125 ps, while maximum pulse length is 10 ns. Start of the system is single mode CW laser. Then light is amplified in fiber amplifier, later AWG driven modulator transmits only required temporal shape and duration pulse which is amplified in diode pumped regenerative amplifier in order to reach energy sufficient to amplify in single-pass flash-lamp pumped amplifiers.

Power amplifier is a chain of single-pass amplifiers where pulse is amplified up to required energy. During amplification spatial beam shaping is used in order to get flat top shape at the output. Optional second/third harmonic generators are based on angle tuned nonlinear crystals placed in temperature stabilized heaters.


Pulse energy (rectangular pulse in time domain 5 ns FWHM)
    at 1064 nm1.6 J5 J10 J
    at 532 nm 2) 1 J2.5 J6 J
Pulse energy stability (StdDev): 3)
    at 1064 nm0.5 %
    at 532 nm1.0 %
Power drift 4)± 2 %
Pulse duration 5)3 – 10 ns, variable with 125 ps resolution
Repetition rate 10 Hz
Polarization at 1064 nmvertical, > 90 %
Optical pulse jitter 6) < 30 ps
Linewidth < 1 cm-1
Beam profile Hat-Top (at laser output), without diffraction rings
Typical beam diameter 7) ~11 mm ~ 22 mm ~33 mm
Beam divergence 8) < 0.5 mrad
Beam pointing stability± 50 µrad
Laser head (W × L × H)750 × 1350 × 300 mm700 × 2100 × 300 mm1000 × 2100 × 300 mm
Power supply unit (W × L × H)550 × 600 × 840 mm – 1 unit
550 × 600 × 670 mm – 1 unit
550 × 600 × 1220 mm - 2 units550 × 600 × 1220 mm – 2 units
550 × 600 × 670 mm – 1 unit
Umbilical length3 m
Water consumption (max 20° C)< 8 l/min < 40 l/min
Ambient temperature 22 ± 2 °C
Relative humidity20  –  80 % (non-condensing)
Power requirements 9)208 – 240 VAC, single phase, 50/60 Hz /
208, 380 or 400 V AC, three phases, 50/60 Hz
208, 380 or 400 V AC, three phases, 50/60 Hz
Power consumption 5.5 kW13.2 / 6.6 kW
  1. Due to continuous improvement, all specifications subject to change without notice. Parameters marked typical may vary with each unit we manufacture. Unless stated otherwise, all specifications are measured at 1064 nm and for basic system without options.
  2. For NL94X-SH harmonic generator option. Harmonic outputs are not simultaneous; only single wavelength beam is present at the output at once. Manual reconfiguration is required to switch wavelength. Third harmonic available on request.
  3. Standard deviation value averaged from 1000 shots after 20 minutes of 
  4. Deviation from average value measured over 8 hours of operation when room temperature variation is less than ±2 °C.
  5. Measured with photodiode with 100 ps rise time and oscilloscope with 600 MHz bandwidth.
  6. Standard deviation value, measured with respect to triggering pulse.
  7. Beam diameter is measured at 1064 nm at laser output at the 1/e² level and can vary with each unit we manufacture.
  8. Full angle measured at the 1/e² level at 1064 nm.
  9. Voltage fluctuations allowed are +10 % / -15 % from nominal value. Mains voltage should be specified when ordering.

Note: Laser must be connected to the mains electricity all the time. If there will be no mains electricity for longer that 1 hour then laser (system) needs warm up for a few hours before switching on.



Found total :
1 article, 1 selected
Application selected :
All Applications
All Applications
Scientific Applications
High Intensity Sources – laser produced plasma, x-ray source, extreme UV
OPCPA Systems – optical parametric chirped pulse amplification system

Spectral pulse shaping of a 5  Hz, multi-joule, broadband optical parametric chirped pulse amplification frontend for a 10  PW laser system

Related applications:  High Intensity Sources OPCPA Systems

Authors:  F. Batysta, R. Antipenkov, T. Borger, A. Kissinger, J. T. Green, R. Kananavičius, G. Chériaux, D. Hidinger, J. Kolenda, E. Gaul, B. Rus, T. Ditmire

We present a broadband optical parametric chirped pulse amplification (OPCPA) system delivering 4 J pulses at a repetition rate of 5 Hz. It will serve as a frontend for the 1.5 kJ, <150  fs, 10 PW laser beamline currently under development by a consortium of National Energetics and Ekspla. The spectrum of the OPCPA system is precisely controlled by arbitrarily generated waveforms of the pump lasers. To fully exploit the high flexibility of the frontend, we have developed a 1D model of the system and an optimization algorithm that predicts suitable pump waveform settings for a desired output spectrum. The OPCPA system is shown to have high efficiency, a high-quality top-hat beam profile, and an output spectrum demonstrated to be shaped consistently with the theoretical model.

Published: 2018.   Source: Optics Letters Vol. 43, Issue 16, pp. 3866-3869 (2018)

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