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TOPAG Lasertechnik GmbH
Nieder-Ramstädter Str. 247
64285 Darmstadt
Telefon: +49 6151 4259 78
Telefax: +49 6151 4259 88 
E- mail: info [at] 

NT235 - Serie, abstimmbar

NT235 - Serie, abstimmbares OEM Komplettsystem, Dioden-gepumpt


Der neue OEM Nanosekundenlaser NT235 ist als robustes und einfach zu bedienendes System konzipiert. Der abstimmbare Wellenlängenbereich liegt zwischen 670-2600nm und ist optional mit einer SH-Stufe um den UV/VIS-Bereich 335-532nm und einem fasergekoppelten Ausgang erweiterbar. Der Laser liefert Ausgangspulsenergien bis zu 10mJ bei einer Repetitionsrate von 100Hz und 3-6ns Pulsbreite.


Bezeichnungen der Tabs

  • Beschreibung
  • Spezifikationen
  • Bilder
Tab 1


  • Integrated DPSS pump laser and OPO into a single housing
  • Hands-free wavelength tuning from 335 to 2600 nm
  • High, up to 10 mJ pulse energy from OPO
  • 100 Hz pulse repetition rate
  • More than 1 mJ output pulse energy in UV
  • Less than 10 cm⁻¹ linewidth
  • 3 – 6 ns pulse duration
  • Remote control pad
  • PC control via USB port and LabVIEW™ drivers
  • Compact and robust design


  • Laser-induced fluorescence
  • Flash photolysis
  • Photobiology
  • Photo acoustic imaging
  • Metrology

NT235 series lasers produce high up to 10 mJ energy pulses at 100 Hz pulse repetition rate, tunable over a broad spectral range. Integrated into a single compact and robust housing, the diode pumped only Q-switched Nd:YAG laser and OPO offers hands‑free, tuning from 335 to 2600 nm. With its 100 Hz repetition rate, the NT235 series laser establishes itself as a versatile tool for many laboratory applications, including photo acoustic imaging, laser induced fluorescence, flash photolysis, photobiology, metrology.

Diode-pumped design, gives maintenance-free laser operation for an extended period of time and improved stability (compared with flash-lamp pumped counterparts).It is cooled by a build-in chiller, which further reduces running costs. OPO pump energy monitor allows monitoring of pump laser performance without the use of external power meters. NT235 series systems controlled from a user-friendly remote control pad or/and a computer. 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.

Accessories and optional items:

  • Optional items and accessories allows the laser to be configured for any application
  • Tuning range extension in UV range (335 – 531 nm) by second harmonics generation
  • Fiber coupled output in 350 – 2300 nm range (please inquire for precise fiber coupler selection)
  • Attenuator option for 670 – 2600 nm range
Tab 2
Specifications 1)

Wavelength range
Signal 670-1063 nm
Idler 1064-2600 nm
SH 335-532 nm 2)
Pulse energy 3)
OPO 15 mJ
SH 3 mJ at 400 nm
Pulse repetition rate 4) 100 Hz
Pulse duration 5) 3-6 ns
Linewidth <10 cm-1
Scanning step
Signal 0.1 nm
Idler 1 nm
SH 0.05 nm
Signal horizontal
Idler vertical
SH horizontal
OPO beam divergence <2.5 mrad6
Typical beam diameter 4 mm 7)
Pump laser
Pump wavelength 532 nm
Max pump pulse energy, mJ 50 mJ 8)
Pulse duration, ns 5-7 ns at 1064 nm
Physical characteristics
Unit size (WxLxH), mm 360x450x150 mm
Power supply size (WxLxH), mm 510x400x295 mm
Umbilical length, m 2.5 m
Operating requirements
Cooling built-in chiller
Room temperature 18-27 °C
Relative humidity 20-80 % (non-condensing)
Power requirements 90-240 VAC, single phase 50/60 Hz
Power consumption < 1 kVA

1) Due to continuous improvements all specifications are subject to change. For latest product information please visit EKSPLA. 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 800 nm.

2) Tuning range of 335 – 532 nm is provided by SH option.

3) See tuning curves for typical outputs at other wavelengths.

4) Inquire for other pulse repetition rates.

5) FWHM measured with photodiode featuring 1 ns rise time and 300 MHz bandwidth oscilloscope.

6) Full angle measured at FWHM level 800 nm.

7) Beam diameter is measured at 800 nm at the FWHM level and can vary depending on the pump pulse energy.

8) The laser max pulse energy will be optimized for best OPO performance. The actual pump laser output can vary with each unit we deliver.

Tab 3

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Tab 5
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Beschreibung 1
NT235 series tunable nanosecond laser for OEM 
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Typical output energy from NT235-100 series tunable wavelength system 
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NT235 series laser head dimensions 
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