NL220 series

High Energy kHz Pulsed Q-switched DPSS Nd:YAG Lasers
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  • High Energy kHz Pulsed Q-switched DPSS Nd:YAG Lasers
  • Up to 30 mJ at 1064 nm
  • Up to 1 kHz repetition rate
  • Close to TEM00 beam profile
  • High Energy kHz Pulsed Q-switched DPSS Nd:YAG Lasers
  • Up to 30 mJ at 1064 nm
  • Up to 1 kHz repetition rate
  • Close to TEM00 beam profile

Features & Applications

Features

  • 30 mJ at 1064 nm
  • 1 kHz pulse repetition rate
  • Close to TEM₀₀ beam profile
  • Simple and robust all-solid-state design
  • Internal/external triggering
  • Short warm-up time
  • Water-to-air cooling (external water service is not required)
  • Optional temperature stabilized second, third and fourth harmonic generators
  • PC control via USB (RS232 is optional) with supplied LabVIEW™ drivers
  • Remote control via keypad

Applications

  • OPO, Ti:Sapphire and dye laser pumping
  • PIV
  • Laser spectroscopy
  • Material ablation
  • Micromachining

Description

NL220 series diode pumped Q-switched lasers produce up to 30 mJ at 1000 Hz  pulse repetition rate. The laser is designed to produce high intensity, high brightness pulses and is targeted for applications like OPO, Ti:sapphire or dye laser pumping, nonlinear spectroscopy, material ablation, micromachining, and other tasks.

Employing electro-optical type of Q-switch allows the master oscillator to produce pulses with a short pulse duration of 6 ns, nearly TEM₀₀ beam profile and nearly diffraction-limited divergence. The M² factor of the beam is typically less than 2.5.
Laser cooling uses a closed loop chiller, thus eliminating the need for external cooling water, and reducing running costs. For PIV applications a double-pulse version of this laser is available. Angle-tuned LBO and/or BBO crystals mounted in temperature stabilized heaters are used for optional second, third or fourth harmonic generation. The harmonics separation system is designed to ensure a high spectral purity of radiation directed to separate output ports.

For customer convenience the laser can be controlled from a user-friendly remote control pad or USB interface. The remote pad allows easy control of all parameters and features a backlit display that is easy to read even wearing laser safety eyewear.
Alternatively, the laser can be controlled from a personal computer with supplied software for a Windows™ operating system. LabVIEW™ drivers are supplied
as well.

Specifications

ModelNL220NL220-30-1K
Main specifications 1)
Pulse energy:
    at 1064 nm 10 mJ30 mJ
    at 532 nm 2) 5 mJ12 mJ
    at 355 nm 3) 3 mJ7 mJ
    at 266 nm 4) 1 mJ2 mJ
Pulse to pulse energy stability, 5)
    at 1064 nm< 1.0 % rms < 1.5 % rms
    at 532 nm 2) < 2.0 % rms < 2.5 % rms
    at 355 nm 3) < 2.5 % rms < 3.5 % rms
    at 266 nm 4)< 4.0 % rms < 6.0 % rms
Pulse duration 6) 6 – 8 ns~28 ns
Pulse repetition rate 7) 1000 Hz
Beam profile multimode
Elipticity0.9 – 1.1 at 1064 nm
M2 < 2.5 8)
Beam divergence 9) 2 mrad at 1064 nm
Beam pointing stability< 20 µrad rms< 25 µrad rms
Polarization linear, vertical at 1064 nm > 95 %
Typical beam diameter 10) 2.5 mm3 mm
Pulse jitter wrt to SYNC OUT 11)< 0.5 ns rms
Pulse jitter wrt to ext. trigger 12)< 0.5 ns rms
Physical characteristics
Laser head (W × L × H)455 × 826 × 260 mm318 × 1035 × 260mm
Power supply unit (W × L × H)365 × 392 × 289 mm552 × 600 × 841 mm
Umbilical length2.5 m
Chiller 13)please inquire, depends on location
Operating requirements
Coolingair cooledair or water cooled
Ambient temperature 18–27 °C
Relative humidity20 – 80 % (non-condensing)
Power requirements100 – 240 V AC, single phase, 50/60 Hz220 – 240 V AC, single phase, 50/60 Hz
Power consumption < 1 kVA < 2 kVA

 

1) Due to continuous improvement, all specifications are subject to change without notice. Parameters marked typical are not specifications. They are indications of typical performance and will vary with each unit we manufacture. Unless stated otherwise, all specifications are measured at 1064 nm.
2) For NL220-SH option. Outputs are not simultaneous. The laser performance is specified for SH wavelength; specifications for other wavelengths may differ from that indicated above.
3) For NL220-TH option. Outputs are not simultaneous. The laser performance is specified for TH wavelength; specifications for other wavelengths may differ from that indicated above.
4) For NL220-FH option. Outputs are not simultaneous. The laser performance is specified for FH wavelength; specifications for other wavelengths may differ from that indicated above.
5) Averaged from 300 pulses.
6) FWHM at 1064 nm, measured with at 5 Gs/s oscilloscope and photodiode with 1 ns rise time.
7) Optional 100 Hz or 200 Hz pulse repetition rate. Pulse energy specifications are 50 % higher for 100 Hz version and 30 % higher for 200 Hz version.
8) M² < 1.5 available on request.
9) Full angle measured at the 1/e² point at 1064 nm.
10) Beam diameter is measured at 1064 nm at the 1/e² point.
11) Optical pulse jitter with respect to SYNC OUT. In internal triggering mode. Typical lead time is 220 ns with respect to optical pulse.
12) Optical pulse jitter with respect to QSW IN. In external triggering mode when triggered with two separate pulses for pump diodes and Q-switch.
13) Available options: water-air or water-water.

Performance & Drawings

Ordering Information

Ordering information of NL220 series lasers

Ordering information of NL220 series lasers

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