High-Power Pulsed Nd:YAG Lasers Model LQ929

  • Description
  • Specifications
  • Options
  • Applications


  • Oscillator-amplifier configuration
  • High pulse energy up to 1.5 J
  • Excellent beam quality
  • All the harmonics available up to 213 nm
  • Compact single-phase power supply
  • No external water requirements

The LQ929 is a series of compact lamp-pumped Nd:YAG lasers built under the scheme master-oscillator one-pass amplifier and having uncompromising combination of the main parameters: high output power, exceptional beam quality and minimum laser head and power supply dimensions.

The master oscillator of the LQ929 laser series, just as that of the LQ529 has ring cavity. The principle of operation of the ring cavity scheme and utilisation of pump chambers with high-efficiency diffuse reflectors provide output laser radiation with homogeneous beam profile and exceptional stability of output energy and spatial radiation parameters.

Typical beam profile at 1064 nm. Near field

All the critical components of the laser are thermally stabilised which in combination with vibration-proof design ensures unsurpassed long-term stability of output radiation. The efficient thermostats used in the LQ929 ensure warm-up time of less than 10 min.

To reduce your time expenses on routine service of the LQ929 we provided flash lamp life time of more than 30 million pulses and foreseen easy and quick procedure of its replacement.

Closed-loop water-to-air cooling system is integrated into a compact single-phase laser power supply which can be controlled both from PC and via the remote control unit.

Nd:YAG laser model LQ929

Model LQ929A (1064 nm) LQ929A (532 nm) LQ929A (355 nm) LQ929A (266 nm) LQ929A (213 nm)
PRR, Hz510510510510510
Output energy, mJ, not less than 1064 nm 14001400140014001400
532 nm -800630800630
355 nm (HPV)1), 2) -420420-420420
355 nm2) 390350-390350
266 nm3) -210190-
213 nm (HPV)1), 4) -4540
213 nm4) 4035
Beam diameter, mm5)≤ 11
Model LQ929B (1064 nm) LQ929B (532 nm) LQ929B (355 nm) LQ929B (266 nm) LQ929B (213 nm)
PRR, Hz510510510510510
Output energy, mJ, not less than 1064 nm 10001000100010001000
532 nm -600450600450
355 nm (HPV)1), 2) -300300-300300
355 nm2) 280250-280250
266 nm3) -200180-
213 nm (HPV)1), 4) -4540
213 nm4) 4035
Beam diameter, mm5)≤ 10
ModelFor all the Models
Pulse-to-pulse energy stability, ±%5)< 2.5
Pulse duration, ns5)10…12
Divergence, mrad5)≤ 1.5
Jitter, ns6) 1
Power consumption, W≤ 1200
Cooling systemwater-to-air
Dimensions (LxWxH), mmLaser head625 x 220 x 125
Power supply700 x 366 x 693

* Specifications are subject to change without notice.

1) For the high-power version at 355 nm.

2) With the LG103T external third harmonic generator.

3) With the LG103F external fourth harmonic generator.

4) With the LG105 external fifth harmonic generator.

5) At 1064 nm.

6) Relative to the Q-Switch driver external trigger pulse.

Dimensions of the LQ929 laser head

Dimensions of the LQ929 power supply

Harmonic Generators

In the standard configuration the LQ929 laser has built-in SHG. Upon your request the SHG, THG, FHG and FiHG can be supplied as external stand-alone modules.

LG101 & LG103 External generators for Nd:YAG lasers


Upon your request the LQ929 laser can be supplemented with an optical parametric oscillator of the LP600 series. In such a combination you will have a source of continuously tuneable laser radiation within a wide spectral range (from UV to IR).

Optical Parametric Oscillator for Nd:YAG lasers

The LZ221 Raman Shifter

Compact and easy to adjust and operate Raman shifter efficiently converts 1064 nm or 532 nm output radiation into several additional laser lines within the visible and IR range.

IR converters

The IR converters are very compact devices with built-in OPO operating in the NCPM mode. The range of IR converters are laser sources providing fixed output wavelengths from 1.5 m to 3.5 m.

Power attenuator

The laser can be supplemented with a variable power attenuator. Upon your choice it can be either a unit optimised for operation at one wavelength or an achromatic attenuator intended for simultaneous attenuation of all the laser harmonics from 266 nm to 1064 nm.

Attenuator of high-power laser radiation

Articulated arm

A number of applications require quick and flexible laser beam delivery to the research object or the place of measurements. For this an optical fiber can be used but only for delivery of low pulse energy radiation (5-20 mJ). To deliver high-power radiation we offer to supplement the laser with a mirror articulated arm. To minimise losses of laser pulse energy we use special dielectric mirrors with high reflection coefficient simultaneously for 1064 nm and 532 nm.

Nd:YAG laser with mirror articulated arm

If you plan to use the LQ929 laser in laboratory experiments, as a bonus you will get unsurpassed operational reliability and minimisation of accompanying expenses.

The LQ929 is an ideal instrument for such applications as:

  • Ti-Sapphire and OPO Pumping
  • Dye Lasers Pumping
  • Spectroscopy
  • LIF (Laser Induced Fluorescence)
  • LIBS (Laser Induced Breakdown Spectroscopy)
  • Education
  • PIV (Particle Image Velocimetry)
  • Ablation
  • Plastic and Ceramic Components Marking
  • Laser Cleaning