NT242 series

Broadly Tunable kHz Pulsed DPSS Lasers
  • High repetition rate OPO system
  • Ultrabroad tuning from 210 to 2600 nm
  • Up to 0.45 mJ in VIS
  • 1 kHz repetition rate
  • High repetition rate OPO system
  • Ultrabroad tuning from 210 to 2600 nm
  • Up to 0.45 mJ in VIS
  • 1 kHz repetition rate

Features & Applications


  • Integrates DPSS pump laser and OPO into a single housing
  • Hands-free no-gap wavelength tuning from 210 to 2600 nm
  • 1000 Hz pulse repetition rate
  • More than 60 μJ output pulse energy in UV
  • Less than 5 cm⁻¹ linewidth
  • 3 – 6 ns pulse duration
  • Remote control pad
  • PC control via USB or RS232 port and LabVIEW™ drivers
  • Optional separate output for the OPO pump beam (355 nm)


  • Laser-induced fluorescence
  • Flash photolysis
  • Photobiology
  • Remote sensing
  • Non-linear spectroscopy
  • Telescope calibration

Description & Options

NT242 series lasers produce pulses at an unprecedented 1 kHz pulse repetition rate, tunable over a broad spectral range. Integrated into a single compact housing, the diode pumped Q-switched Nd:YAG laser and OPO offers hands‑free, no-gap tuning from 210 to 2600 nm. With its 1000 Hz repetition rate, the NT242 series laser establishes itself as a versatile tool for many laboratory applications, including laser induced fluorescence, flash photolysis, photobiology, metrology, remote sensing, etc.

NT242 series systems can be controlled from a user-friendly remote control pad or/and a computer using supplied LabVIEW™ drivers. The control pad allows easy control of all parameters and features on a backlit display that is easy to read even with laser safety eyewear. Thanks to a DPSS pump source, the laser requires little maintenance. It is cooled by a built-in chiller, which further reduces running costs. A built‑in OPO pump energy monitor allows monitoring of pump laser performance without the use of external power meters. The optional feature provides a separate output port for the 1064, 532 or 355 nm beam.

Accessories and optional items

-SHTuning range extension in UV range (210 – 300 nm) by second harmonics generation
-SFTuning range extension in 300 – 405 nm range by sum-frequency generation
-SH/-SFTuning range extension in 210 – 405 nm range by combining second harmonics and sum-frequency generator outputs for maximum possible pulse energy
-SCUSpectral filtering accessory for improved spectral purity of pulses
-H, -2H, -3H1064, 532 and 355 nm output via separate port
-FCFiber coupler
-AttnAttenuator option


Model 1)NT242NT242-SHNT242-SFNT242-SH/SF
Wavelength range
    Signal405 – 710 nm
    Idler710 – 2600 nm
    SH and SF210 – 300 nm300 – 405 nm210 – 405 nm
Pulse energy 2)
    OPO450 µJ
    SH and SF40 µJ at 240 nm60 µJ at 320 nm60 µJ at 320 nm
Pulse repetition rate1000 Hz
Pulse duration 3)3 – 6 ns
Linewidth 4) < 5 cm-1
Tuning resolution 5)
    Signal 1 cm-1
    Idler1 cm-1
    SH and SF2 cm-1
    SH and SFvertical
Typical beam diameter 6)3 × 6 mm
Pump laser
Pump wavelength 7)355 nm355 / 1064 nm
Max pump pulse energy 8)3 mJ3 / 1 mJ
Pulse duration 3)4 – 6 ns at 1064 nm
Physical characteristics
Laser head size (W × L × H)456 × 1040 × 297 mm
Power supply size (W × L × H)520 × 400 × 286 mm
Umbilical length2.5 m
Operating requirements
Coolingbuilt-in chiller
Room temperature18 – 27 °C
Relative humidity20 – 80 % (non-condensing)
Power requirements100 – 240 VAC, single phase 50/60 Hz
Power consumption < 1.5 kVA
  1. Due to continuous improvement, all specifications are subject to change. Parameters marked typical are illustrative; they are indications of typical performance and will vary with each unit we manufacture. Unless stated otherwise, all specifications are measured at 450 nm.
  2. See tuning curves for typical outputs at other wavelengths.
  3. Measured at FWHM level with photodiode featuring 1 ns rise time and 300 MHz bandwidth oscilloscope.
  4. Linewidth is <8 cm⁻¹ for 210 – 405 nm range.
  5. For manual input from PC. When wavelength is controlled from keypad, tuning resolution is 0.1 nm for signal, 1 nm for idler and 0.05 nm for SH and SF.
  6. Beam diameter is measured at 450 nm at the 1/e2 level and can vary depending on the pump pulse energy.
  7. Separate output port for the 3rd and other harmonics are optional.
  8. The laser max pulse energy will be optimized for best OPO performance. The actual pump laser output can vary with each unit we manufacture.

Performance & Drawings

Ordering information

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