NT350 series

High Energy NIR Range Tunable Lasers
  • Integrated OPO system
  • Pumped by 532 nm offering high output in NIR
  • Up to 150 mJ in range 660 – 2450 nm
  • At 10/20 Hz pulse repetition rate
  • Integrated OPO system
  • Pumped by 532 nm offering high output in NIR
  • Up to 150 mJ in range 660 – 2450 nm
  • At 10/20 Hz pulse repetition rate

Features & Applications


  • Hands-free, automated wavelength tuning from 660 to 2450 nm
  • Up to 150 mJ pulse energy in near-IR spectral range
  • Narrow linewidth across tuning range
  • 3 – 5 ns pulse duration
  • Remote control pad
  • PC control via RS232 and LabVIEW™ drivers
  • Separate output port for 532 nm beam. Output for 1064 nm is optional
  • OPO pump energy monitoring
  • Replacement of the flashlamps can be done without misalignment of the laser cavity
  • Hermetically sealed oscillator cavity protects non-linear crystals from dust and humidity


  • Photoacoustic imaging
  • Photobiology
  • Remote sensing
  • Time-resolved spectroscopy
  • Non-linear spectroscopy
  • Other laser spectroscopy applications

Description & Options

NT352 series tunable laser seamlessly integrates in a compact housing a nanosecond optical parametric oscillator and Nd:YAG Q-switched laser.

Three models with different output pulse energy values are offered. The most powerful model has more than 150 mJ pulse energy at 700 nm. Narrow linewidth (<10 cm⁻¹) is nearly constant trough whole tuning range, which makes laser suitable for many spectroscopy application.

The device is controlled from the remote keypad or from PC through RS232 interface using LabVIEW™ drivers that are supplied with the system. The remote pad features a backlit display that is easy to read even while wearing laser safety glasses.

System is designed for easy and cost-effective maintenance. Replacement of flashlamps can be done without misalignment of the laser cavity and deterioration of laser performance. OPO pump energy monitoring system helps to increase lifetime of the optical components.

Optional items are available allowing optimization of the laser system for Your application, for example:

  • Fiber coupled output in 350 – 2000 nm range;
  • Efficient second harmonic generator for 330 – 530 nm range;
  • Pulse energy attenuator;
  • Water-air cooled power supply.

Please inquire custom-build versions and options.


OPO 1)
Wavelength range
    Signal660 – 1064 nm
    Idler1065 – 2450 nm
    SH330 – 530 nm
OPO output pulse energy 2)70 mJ110 mJ150 mJ
Linewidth 3)< 10 cm-1
Tuning resolution 4)
    Signal (660 – 1064 nm)1 cm⁻¹
    Idler (1064 – 2450 nm)1 cm⁻¹
    SH (330 – 530 nm)2 cm⁻¹
Pulse duration 5)3 – 5 ns
Typical beam diameter 6)5 mm7 mm
Typical beam divergence 7)< 2 mrad
    Signal beamhorizontal
    Idler beamvertical
    SH beamvertical
Pump wavelength532 nm
Max pump pulse energy230 mJ350 mJ450 mJ
Pulse duration4 – 6 ns
Beam quality"Hat-top" in near field. Close to Gaussian in far field
Beam divergence< 0.6 mrad
Pulse energy stability (StdDev)< 2.5 %
Pulse repetition rate10 or 20 Hz10 Hz
Unit size (W × L × H)452 × 610 × 270 mm452 × 1020 × 270 mm
Power supply size (W × L × H)330 × 490 × 585 mm550 × 600 × 530 mm
Umbilical length2.5 m
Water consumption (max 20 °C) 9)6 l/min10 l/min
Room temperature15 – 30 °C
Relative humidity20 – 80 % (non-condensing)
Power requirements 10)208 or 240 V AC, single phase 50/60 Hz
Power consumption 11)1.8 / 3.4 kVA1.8 kVA
  1. Due to continuous improvement, all specifications are subject to change without notice. The 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 700 nm and for basic system without options.
  2. Measured at 700 nm for OPO and 350 nm for SH. See tuning curves for typical outputs at other wavelengths.
  3. In signal and idler range.
  4. When wavelength is controlled from PC. When wavelength is controlled from keypad, tuning resolution is 0.1 nm for signal, 1 nm for idler and 0.5 nm for SH.
  5. FWHM measured with photodiode featuring 1 ns rise time and 300 MHz bandwidth oscilloscope.
  6. Beam diameter is measured at 700 nm at the 1/e² level and can vary depending on the pump pulse energy.
  7. Full angle measured at the FWHM level at 700 nm.
  8. Separate output port for the 532 nm beam is standard. Output for 1064 nm beam is optional. Pump laser output will be optimized for OPO operation and specification may vary with each unit we manufacture.
  9. At 10 Hz pulse repetition rate. Air cooled power supply is available as option.
  10. Mains voltage should be specified when ordering.
  11. At 10/20 Hz pulse repetition rate.

Note: Laser must be connected to the mains electricity all the time. If there will be no mains electricity for longer that 1 hour then laser (system) needs warm up for a few hours before switching on.


Ordering information

Send request about NT350