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Compact Air-Cooled Nd:YAG Laser

Model LQ115

Compact Air-Cooled Nd:YAG Laser LQ115

The LQ115 is an ultra-compact model of air-cooled Nd:YAG laser for applications requiring compact and undemanding laser source.

  • No cooling water required
  • Compact & rigid design
  • Excellent beam profile
  • Continuous operation mode
  • Built-in harmonics
  • Turn-key operation
  • Remote control


Due to application of original high-efficiency heat exchanger the LQ115 laser unlike most air-cooled laser models can work continuously with PRR up to 3Hz and cyclically with PRR up to 5Hz. The above operating modes are realised at output energies conventionally attained at water-cooled lasers.

The YAG laser LQ115 provides up to 90mJ output pulse energy at the fundamental with possibility of further conversion of IR radiation into the second harmonic as well as into the third or fourth harmonic.

All the harmonic generators are built-in and temperature stabilised. This peculiarity together with optimised rigid laser head design ensures output radiation long-term stability comparable to that of standard laboratory lasers.

Unlike most compact lasers using DKDP-based Pockels cells, the LQ115 incorporates LiNbO3 electro-optical Q-Switch. Such Q-Switch is not hygroscopic and retains its parameters within a wide temperature range and ensures reliable and stable laser operation.

Dust-proof laser head design allows to align main optical components without removing the cover that increases their life in the field.

To reduce your time expenses on routine service of the LQ115 laser we use only long lifetime flash lamps by Heraeus Noblelight Ltd. Besides, the flash lamp replacement procedure is elementarily easy even for a unskilled user.

Absence of water cooling system gives to the The YAG laser LQ115 a number of essential operational advantages:

  • Footprint of both the laser head and power supply is considerably reduced.
  • Integration of the laser into different mobile systems is facilitated.
  • Technical reliability of the device operation is increased.
  • Operating costs are reduced.

Typical beam profile for the LQ115 laser at 532 nm

Typical long-term stability for the LQ115 laser at 1064 nm during 4 hours of continuous operation


Model LQ115 (1064 nm) LQ115 (532 nm)
PRR, Hz 1 2 3 1 2 3
Output energy, mJ, not less than 1064 nm 90 90 75 90 90 75
532 nm 45 40 30
355 nm
266 nm
Pulse-to-pulse energy stability, ±%1) 3 3.5 4.5 3 3.5 4.5


Model LQ115 (355 nm) LQ115 (266 nm)
Pulse repetition frequency, Hz 1 2 3 1 2 3
Output energy, mJ, not less than 1064 nm 90 90 75 90 90 75
532 nm 35 30 22 45 40 30
355 nm 20 20 15
266 nm 6 5 4
Pulse-to-pulse energy stability, ±%1) 3 3.5 4.5 3 3.5 4.5


Model For all the models
Pulse duration, ns1) 5…9
Beam diameter, mm1) ≤ 4.5
Divergence, mrad1) ≤ 3
Jitter, ns2) ≤ 3.5
Power consumption, W ≤ 200
Dimensions (LxWxH), mm Laser head 410 x 125 x 130
Power supply 320 x 370 x 150

* Specifications are subject to change without notice.

1) At 1064 nm.
2) Relative to the Q-Switch driver external trigger pulse.

Dimensions of the LQ115 laser head

Dimensions of the LQ115 power supply



Upon the customer’s request for mobile applications the laser can be equipped with a power supply to be powered from 24V DC.



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.


Power attenuator

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