NL230 series


The NL230 series diode-pumped Q-switched lasers produce up to 150 mJ at 100 Hz or up to 190 mJ at 50 Hz pulse repetition rate. Diode pumping allows maintenance-free laser operation for an extended period of time (more than 3 years for an estimated eight working hours per day). The typical pump diode lifetime is more than 1 billion shots.

Lasers are designed to produce high-intensity, high-brightness pulses and are targeted for applications such as material ablation, remote sensing, OPO, Ti:Sapphire or dye laser pumping. Due to an electro‑optical Q-switch, the master oscillator generates short duration pulses in the 3 – 7 ns range. The oscillator cavity optical design features a variable‑reflectivity output coupler, giving a low-divergence laser beam. A closed-loop TEC based chiller is used for laser cooling, eliminating the need for external cooling water and reducing running costs. Angle-tuned non-linear crystals mounted in temperature stabilized heaters are used for optional second, third or fourth harmonic generation. The harmonics separation system is designed to ensure radiation with a high spectral purity and to direct it to the separate output ports.

For customer convenience the laser can be controlled via a user‑friendly remote control pad or a USB interface. The remote pad allows easy control of all parameters and features a backlit display that is easy to read even through laser safety eyewear. Alternatively, the laser can be controlled from a personal computer via supplied Windows™ compatible software. LabVIEW™ drivers are also included with each laser installation package.


  • Diode-pumped, typical diode lifetime >1 Gshot
  • Rugged sealed laser cavity
  • Up to 190 mJ at 1064 nm pulse energy
  • Up to 100 Hz pulse repetition rate
  • Short pulse duration in the 3-7 ns range
  • Variable reflectivity output coupler for low-divergence beam
  • Quiet operation: no more flashlamp firing sound
  • Air cooled
  • Remote control via keypad and/or PC via USB (RS232 optional) port with supplied LabVIEW™ drivers
  • Optional temperature-stabilized second, third and fourth harmonic generators
  • Optional attenuators for fundamental or/and harmonics wavelengths

Related Applications

  • OPO, Ti:Sapphire and dye laser pumping
  • TFT-LCD Repair
  • Mass Spectroscopy
  • Remote Sensing
  • LIDAR (Light Detection And Ranging)
  • LIF (Light Induced Fluorescence)
  • PIV (Particle Image Velocimetry)
  • LIBS (Light Induced Breakdown Spectroscopy)
  • ESPI (Electronic Speckle Pattern Interferometry)
  • Medical
  • Photo-acoustic imaging


Main specifications 1)
Pulse energy (not less than) 2)
    at 1064 nm 140 mJ 60 mJ 190 mJ 150 mJ
    at 532 nm 3) 70 mJ 30 mJ 90 mJ 70 mJ
    at 355 nm 4) 40 mJ 15 mJ 55 mJ 40 mJ
Pulse energy stability (StdDev) 5)
    at 1064 nm <1 %
    at 532 nm <2.5 %
    at 355 nm <3.5 %
Pulse repetition rate 30 Hz 100 Hz 50 Hz 100 Hz
Power drift 6) < ±1 %
Pulse duration 7) 3 – 7 ns
Linewidth <1 cm-1 at 1064 nm
Beam profile 8) "Top Hat" in near field and close to Gaussian in far field
Beam divergence 9) <0.8 mrad
Beam pointing stability 10) ≤60 µrad rms
Polarization linear, >95% at 1064 nm
Typical beam diameter 11) 5 mm
Optical pulse jitter
    Internal triggering regime 12) <0.5 ns rms
    External triggering regime 13) <0.5 ns rms
SYNC OUT pulse delay -100 µs ... 100 ms
Typical warm-up time 5 min
Physical characteristics
Laser head size (W × L × H) 190×305×165 mm ± 3 mm
Power supply unit (W × L × H)
    Desktop case 471×391×147 mm ± 3 mm
    19" module 483×355×133 mm ± 3 mm
    External chiller (where applicable) inquire
Umbilical length 2.5 m
Operating requirements
Cooling (air cooled)14) built in chiller external chiller
Ambient temperature 18 – 27 °C
Relative humidity (non-condensing) 20 – 80 %
Power requirements 100-240 VAC, single phase, 50/60 Hz
Power consumption <1kVA
  1. Due to continuous improvement, all specifications are subject to change without notice. The parameters marked typical may vary with each unit we manufacture. Unless stated otherwise all specifications are measured at 1064 nm.
  2. Outputs are not simultaneous. Inquire for fourth 266 nm and fifth 213 nm harmonic specifications.
  3. With H300SH and H300S or H300SHC harmonics generator module. See harmonics generator selection guide for more detailed information.
  4. With H300STH and H300ST harmonics or H300SH and H300THC generator modules. See harmonics generator selection guide for more detailed information.
  5. Averaged from pulses, emitted during 30 sec time interval.
  6. Measured over 8 hours period after 20 min warm-up when ambient temperature variation is less than ± 2 °C.
  7. FWHM.
  8. Near field (at the output aperture) TOP HAT fit is >80%.
  9. Full angle measured at the 1/e2 level.
  10. Beam pointing stability is evaluated as movement of the beam centroid in the focal plane of a focusing element.
  11. Beam diameter is measured at 1064 nm at the 1/e² level.
  12. With respect to SYNC OUT pulse.
  13. With respect to QSW IN pulse.
  14. Adequate room air conditioning should be provided.

Notes: The laser and auxiliary units must be settled in such a place void of dust and aerosols. It is advisable to operate the laser in air conditioned room, provided that the laser is placed at a distance from air conditioning outlets. The laser should be positioned on a solid worktable. Access from one side should be ensured. Intensive sources of vibration should be avoided near the laboratory (ex. railway station or similar).