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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] 

NL940 - Serie

Nanosekunden Hochleistungslaser NL940


Die Hochleistungslaser der Serie NL940 liefern bis zu 10J Ausgangsleistung bei Repetitionsraten von 10Hz und Pulsdauern zwischen 4-10ns. Aufgrund der exzellenten Strahl- und Pulsenergiestabilität eignet sich das System für das Pumpen von OPCPAs und Farbstofflasern.


Bezeichnungen der Tabs

  • Beschreibung
  • Spezifikationen
  • Bilder
Tab 1


  • Up to 10 J output energy
  • 10 Hz repetition rate
  • 3–10 ns pulse duration
  • 1064 or 532 nm output wavelength
  • Spatial flat top beam profile
  • Fibre front end output amplified in diode pumped regenerative amplifier


  • OPCPA pumping
  • Front end for power amplifiers
  • Ti: Sapphire pumping
  • Laser peening – material hardening by laser-induced shock wave
  • Plasma and shock physics

Main laser feature is output of temporary shaped pulses based on electrooptical modulator driven by programable arbitrary form generator (AWG). Pulse shaping resolution is 125 ps, while maximum pulse length is 10 ns. Start of the system is single mode CW laser. Then light is amplified in fibre amplifier, later AWG driven modulator transmits only required temporal shape and duration pulse which is amplified in diode pumped regenerative amplifier in order to reach energy sufficient to amplify in singly pass flash-lamp pumped amplifiers. Power amplifier is a chain of single-pass amplifiers where pulse is amplified up to required energy. During amplification spatial beam shaping is emloyed in order to get flat top shape at the output. The second harmonic generator is based on angle tuned nonlinear crystal placed in a heater.

Tab 2
Specifications 1)

Pulse energy (rectangular pulse in time domain 5 ns FWHM)
at 1064 nm 1600 mJ 10000 mJ
at 532 nm2) 1000 mJ 6000 mJ
Pulse energy stability (Std. Dev) 3)
at 1064 nm 0.5 %
at 532 nm 1.0 %
Power drift 4) ± 2%
Pulse duration 5) 3-10 ns
Pulse repetition rate 10 Hz
Polarization @ 1064 nm 10) vertical, >90 %
Optical pulse jitter 6) <30 ps
Linewidth <0.1 cm-1
Beam profile ''Hat-Top'' (at laser output), without diffraction rings
Typical beam diameter 7) ~11 mm ~33 mm
Beam divergence 8) <0.5 mrad
Beam pointing stability ± 50 µrad
Physical characteristics 
Laser head size (WxLxH)  750x1350x300 mm 1000x2100x300 mm
Power supply unit size (WxLxH)

550x600x850 mm - 1 unit 

550x600x670 mm - 1 unit

 500x600x1220 mm - 2 units

550x600x670 mm - 1 unit

 Umbilical length  3 m
Operating requirements
Water consumption (max 20° C)14) < 8 l/min < 40 l/min
Ambient temperature stabilized, from range 18-25 °C
Relative humidity 20-80 % (non-condensing)
Power requirements 9)

208/240 V AC, single phases 50/60 Hz

or 208/240 V AC, three phases 50/60 Hz

208/380 V AC, three phases, 50/60 Hz
Power consumption   5.5 kW 13.2/6.6 kW

1) Due to continuous improvement, all specifications subject to change without notice. For latest product information please visit EKSPLA. Parameters marked typical may vary with each unit we manufacture.Unless stated otherwise, all specifications are measured at 1064 nm.

2) For NL3194X-SH harmonics generator option. Harmonics outputs are not simultaneous; only single wavelength beam is present at the output at once. Manual reconfiguration is required to switch wavelength.

3) Standard deviation value averaged from 1000 shots after 20 minutes of warm-up.

4) Deviation from average value measured over 8 hours of operation when room temperature variation is less than ±2 °C.

5) Measured with photodiode with 100 ps rise time and oscilloscope with 600 MHz bandwidth.

6) Standard deviation value, measured in respect to triggering pulse.

7) Beam diameter is measured at 1064 nm at laser output at the 1/e² level and can vary with each unit we manufacture.

8) Full angle measured at the 1/e² level at 1064 nm.

9) Mains voltage should be specified when ordering.


Tab 3
Tab 4

Tab 4 Inhalt

Tab 5
Bild 1
Beschreibung 1
NL940 series high energy nanosecond laser
Bild 2
 NL949 near field
Beschreibung 2
Typical NL949 near field beam profile at 532 nm
Bild 3
 NL940 temporal pulse shape
Beschreibung 3
Example of temporal pulse shape, stability of pulse shape
Bild 4
 NL940 Jitter
Beschreibung 4
 Jitter measurement results
Bild 5
Beschreibung 5
Bild 6
Beschreibung 6
Bild 7
Beschreibung 7
Bild 8
Beschreibung 8
Bild 9
Beschreibung 9
Bild 10
Beschreibung 10


Located in: Nanosekunden | bis 100 Hz