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NT230 series Nanosecond Tunable DPSS Lasers

Integrated in a single compact housing diode pumped Q-switched laser and OPO system offers hands-free, no-gap tunning from 193 to 2600 nm. Producing high up to 10 mJ energy pulses at 100 Hz pulse repetition rate, tunable over a broad spectral range, NT230 series lasers are realiable solution for many laboratory and OEM applications.


  • Integrates DPSS pump laser and OPO into a single housing
  • Hands-free no-gap wavelength tuning from 193 to 2600 nm
  • High, up to 10 mJ pulse energy from OPO
  • 100 Hz pulse repetition rate
  • More than 1.5 mJ output pulse energy in UV
  • Less than 5 cm⁻¹ linewidth
  • 3 – 6 ns pulse duration
  • Remote control pad
  • PC control via USB port (RS232 is optional) and LabVIEW™ drivers
  • Optional separate output port for 355/532/1064 nm beam


  • Laser-induced fluorescence
  • Flash photolysis
  • Photobiology
  • Remote sensing
  • Metrology
  • Non-linear spectroscopy
  • Medical
  • Photo acoustic imaging


NT230 series lasers deliver high up to 10 mJ energy pulses at 100 Hz pulse repetition rate, tunable over a broad spectral range. Integrated into a single compact housing, the diode pumped Q-switched Nd:YAG laser and Optical Paramteric Oscillator (OPO) offers hands‑free, no-gap tuning from 193 to 2600 nm. With its 100 Hz repetition rate, the NT230 series laser establishes itself as a versatile tool for many laboratory applications, as laser induced fluorescence, flash photolysis, photobiology, metrology, remote sensing, etc.

Due to the innovative diode‑pumped design, NT230 series lasers features maintenance-free laser operation for an extended period of time and improved stability (compared with flash-lamp pumped counterparts). NT230 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 system display that is easy to read even with laser safety eyewear.

Due to DPSS pump source, the laser requires little maintenance. It is cooled by a built-in chiller, which further reduces running costs. An OPO pump energy monitor allows monitoring of pump laser performance. A standard feature includes a separate output port for the 355 nm pump beam.


Accessories and optional items

Option Features
-SH Tuning range extension in UV range (210 – 409 nm) by second harmonics generation
-SF Tuning range extension in 300 – 409 nm range by sum-frequency generation
-SH/SF Tuning range extension in 210 – 409 nm range by combining second harmonics and
sum-frequency generator outputs for maximum possible pulse energy
-SCU Spectral filtering accessory for improved spectral purity of pulses
-H, -2H 1064 nm or 532 nm output via separate port
-FC Fiber coupled output in 350-700 nm range
-DUV Deep UV option in 193-209.9 nm

Specifications 1)

Model NT230-50-SH/SF NT230-100-SH/SF
Wavelength range
  Signal 405-709 nm
  Idler 710-2600 nm
  SH or SF 210-405 nm2)
  DUV 193-209.9 nm 3)
Pulse energy 4)
  OPO 10 mJ
  SH and SF 1.5 mJ at 260 nm and 340 nm
  DUV 0.2 mJ at 200 nm
Pulse repetition rate 5) 50 Hz 6) 100 Hz
Pulse duration 7) 3-6 ns
Linewidth 8) <5 cm-1
Scanning step
  Signal 0.1 nm
  Idler 1 nm
  SH and SF 0.05 nm
  Signal horizontal
  Idler vertical
  SH and SF vertical
OPO beam divergence 9) <2 mrad
Typical beam diameter 10) 4 mm
Pump wavelength 11) 355/1064 nm
Max pump pulse energy 12) 35/100 mJ
Pulse duration 7) 6-8 ns at 1064 nm
Unit size (W x L x H) 451 x 640 x 162 mm
Power supply size (W x L x H) 365 x 395 x 290 mm
Umbilical length 2.5 m
Cooling built-in chiller
Room temperature 15-30 °C
Relative humidity 20-80 % (non-condensing)
Power requirements 90-240 V AC, single phase 50/60 Hz
Power consumption < 1 kVA

1) Due to continuous improvement, all specifications are subject to change without notice. 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 450 nm.
2) Tuning range of 210 – 405 nm is provided by SH/SFG option.
3) Tuning range of 193 – 209.9 nm is provided by DUV option.
4) See tuning curves for typical outputs at other wavelengths.
5) Inquire for other pulse repetition rates.
6) Variable repetition rate. Please contact Ekspla for more details.
7) FWHM measured with photodiode featuring 1 ns rise time and 300 MHz bandwidth oscilloscope.
8) Linewidth is <8 cm⁻¹ for 210 – 405 nm range.
9) Full angle measured at the FWHM level at 450 nm.
10) Beam diameter is measured at 450 nm at the 1/e2 level and can vary depending on the pump pulse energy.
11) Separate output port for the 3rd harmonics beam is standard. Output ports for other harmonics are optional.
12) The laser max pulse energy will be optimized for best OPO performance. The actual pump laser output can vary with each unit we manufacture.


Ordering information

Ordering information of NT230 series nanosecond tunable laser