Dual-Pulse Compact Nd:YAG Laser Model LQ215-D

  • Description
  • Specifications
  • Options
  • Applications

Features

  • Excellent beam quality
  • 1064 nm or 532 nm output wavelength
  • Beam pointing stability
  • Dust- and water-proof design
  • Reliability of industrial equipment
  • Compact single phase power supply
  • No need for external water

The LQ215-D is built on the basis of a laser produced for aerospace industry and combines excellent beam quality required for advanced scientific research and a highest reliability of industrial equipment.

The design of conventional lasers generating dual pulse is based either on combining two lasers or on successive generation of nanosecond pulses by one active element during one flash lamp discharge pulse. The first solution allows to build a system with the maximum capabilities for the user but leads to increase of its cost and dimensions. The second approach allows to create low-cost and compact systems but leads to reduction of each pulse energy and of laser beam profile worsening and stability as well as limits the delay range between the pulses.

The LQ215-D design demonstrates advantages of both the variants but eliminates their disadvantages: output radiation is generated by two separate cavities while both the Nd:YAG rods are installed in one pump chamber and are pumped by one flash lamp. Both the cavities are integrated into a common laser head controlled by a common power supply that provides to the user minimum dimensions and convenience in controlling dual pulse parameters.

Original and reliable optical scheme ensures compensation of both astigmatism and thermooptical distortions and places at your disposal laser radiation of the highest quality.

One more peculiarity of the laser optical scheme is that all the components operate at loads considerably lower than the admissible values. Such a smooth operation mode not only increases life time of the components but also ensures unique operational reliability of the whole laser. As a result, you can use the LQ215-D laser for your experiments day-to-day and year-to-year having forgotten about repairs and other unpleasant operation costs.

All the laser optical components are installed on a rigid base fixed to the housing with specially developed dampers. Due to this, mechanical vibrations and housing stress no way influence the quality of the cavity alignment.

All the critical components of the laser are thermally stabilised which in combination with vibration-proof design ensures unsurpassed long-term output radiation stability. The efficient thermostats used in the LQ215-D ensure warm-up time of less than 10min.

To reduce your time expenses on routine service of the LQ215-D we provided flash lamp life time of more than 50 million pulses and foreseen easy and quick procedure of its replacement.

It should be noted that the laser design allows to replace the flash lamp without removing the laser head upper cover. Such a design concept considerably reduces risks of the optical components contamination as well as increases operational reliability of the device.

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.

Поперечный профиль излучения LQ215 на длине волны 1064 нм. Ближняя зонаTypical LQ215-D laser beam profile at 1064 nm. Near field

ModelLQ215-D
Maximum PRR, Hz1)20
Each pulse output energy, mJ, not less than2)1064 nm100
532nm50
Pulse duration, ns2)6…10
Adjustable delay between pulses, µs0…80
Step of adjustable delay between pulses, µs1 (0.1 – upon request)
Beam diameter, mm3)≤ 5
Divergence, mrad3)≤ 1.5
Pulse-to-pulse energy stability, ±%3)< 2.5
Beam pointing stability, mrad, not worse than3)0.1
Jitter, ns4)< 1
Power consumption, W≤ 500
Cooling systemwater-to-air
Dimensions (LxWxH), mmLaser head534 x 190 x 135
Power supply620 x 330 x 670

* Specifications are subject to change without notice.

1) The laser operates at fixed PRR stipulated on placing an order. The PRR can be from 1Hz to 20Hz. All the parameters are specified for 20Hz PRR.

2) The difference between pulse energies in the dual pulse does not exceed ± 5%.

3) At 1064 nm.

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

Dimensions of the LQ215-D laser head

Dimensions of the LQ215-D power supply

Harmonic Generators

In the standard configuration the LQ215-D laser has built-in SHG, THG and FHG. However, upon your request the harmonic generators can be supplied as external stand-alone modules. FiHG is available only as an external unit.

LG101 & LG103 External generators 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 µm to 3.5 µm.

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 LQ215-D in laboratory experiments, as a bonus you will get unsurpassed operational reliability and minimisation of accompanying expenses.

If you are attracted by the reliability of the LQ215-D laser and you will use it for industrial or field applications, in addition to a highest reliability you get beam quality conventionally available only for high-precision laboratory equipment.

The LQ215-D is an ideal instrument for such applications as:

  • PIV (Particle Image Velocimetry)
  • Turbulent Flow Studies
  • Vortex Analysis
  • Spray Analysis
  • Combustion Studies
  • LIF (Laser Induced Fluorescence)
  • LIBS (Laser Induced Breakdown Spectroscopy)
  • Education
  • Ablation
  • Ti-Sapphire Lasers and OPO Pumping
  • Dye Lasers Pumping
  • Spectroscopy
  • LIDAR