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Scientific lasers & systems » Nanosecond lasers and systems » Tunable wavelength systems (OPOs)

NT242 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 210 to 2600 nm. Offering 1000 Hz repetition rate NT242 series laser establishes itself as a versatile tool for many laboratory apllications.

Features

  • Integrates DPSS pump laser and OPO into a single housing
  • Hands- free, no-gap wavelength tuning from 210 to 2600 nm
  • Unprecendented 1000 Hz pulse repetition rate
  • More than 40 μJ 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
  • Separate output for the OPO pump beam (355 nm)

 

Applications

  • Laser-induced fluorescence
  • Flash photolysis
  • Photobiology
  • Remote sensing
  • Metrology
  • Non-linear spectroscopy
  • Other laser spectroscopy applications

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 stand alone 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. A standard feature includes a separate output port for the 355 nm pump beam.

Accessories and Optional Items

  • A broad selection of optional items and accessories allows the laser to be configured for any application:
  • Tuning range extension in UV range (210 – 355 nm) by second harmonics generation
  • Tuning range extension in 300 – 405 nm range by sum-frequency generation
  • Tuning range extension in 210-405 nm range by combining second harmonics and sum-frequency generator outputs for maximum possible pulse energy.
  • Spectral filtering accessory for improved spectral purity of pulses
  • 1064 nm or 532 nm output via separate port

Specifications 1)

Model NT242 NT242-SH NT242-SFG
OPO
Wavelength range
Signal 405-709 nm
Idler 710-2600 nm
SH or SFG - 210-355 nm 2) 300-405 nm 2)
Pulse energy 3)
OPO 450 µJ
SH and SFG - 40 µJ at 240 nm 40 µJ at 320 nm
Pulse repetition rate 4) 5) 1000 Hz
Pulse duration 6) 3-6 ns
Linewidth7) <5 cm-1
Scanning step
Signal 0.01 nm
Idler 1 nm
SH and SFG - 0.05 nm
Polarization
Signal horizontal
Idler vertical
SH and SFG - vertical
Typical beam diameter 8) 2.5 mm
Pump laser
Pump wavelength, nm 9) 355 nm 355/1064 nm
Max pump pulse energy, mJ 10) 3 mJ 3/1 mJ
Pulse duration, ns 6) 6-8 ns at 1064 nm
Physical characteristics
Unit size (WxHxL), mm 456x274x1030 mm
Power supply size (WxHxL), mm 365x289x392 mm
Umbilical length, m 2.5 m
Operating requirements
Cooling stand alone chiller
Room temperature 15-30 °C
Relative humidity (noncondensing) 20-80, %
Mains voltage 90-240 VAC, single phase 50/60 Hz
Power consumption < 1 kVA

1) 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 NT242-SH/SFG.
3) See tuning curves for typical outputs at other wavelengths.
4) Inquire for other pulse repetition rates.
5) 100 Hz version is available. Pulse energy specification is >0.9 mJ at 450 nm.
6) FWHM measured with photodiode featuring 1 ns rise time and 300 MHz bandwidth oscilloscope.
7) Linewidth is <8 cm-1 for 210-405 nm range.
8) Beam diameter is measured at 450 nm at the FWHM level and can vary depending on the pump pulse energy.
9) Separate output port for the 3rd harmonics beam is standard. Output ports for other harmonics are optional.
10) The laser max pulse energy will be optimized for best OPO performance. The actual pump laser output can vary with each unit we manufacture.