/ High energy nanosecond lasers
/ Temporary shaped 3 – 10 ns pulses
/ Pulse energies up to 10 J
/ 10 Hz pulse repetition rate
/ High energy nanosecond lasers
/ Temporary shaped 3 – 10 ns pulses
/ Pulse energies up to 10 J
/ 10 Hz pulse repetition rate
Features
Applications
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.
| Model | NL944 | NL949 |
|---|---|---|
| Main specifications 1) | ||
| Pulse energy (rectangular pulse in time domain 5 ns FWHM) | ||
| at 1064 nm | 1600 mJ | 10000 mJ |
| at 532 nm 2) | 1000 mJ | 6000 mJ |
| Pulse energy stability (StdDev): 3) | ||
| at 1064 nm | 0.5 % | |
| at 532 nm | 1.0 % | |
| Power drift 4) | ± 2 % | |
| Pulse duration 5) | 3 – 10 ns | |
| Repetition rate | 10 Hz | |
| Polarization at 1064 | vertical, > 90 % | |
| Optical pulse jitter 6) | < 30 ps | |
| Linewidth | < 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 (W × L × H) | 750 × 1350 × 300 mm | 1000 × 2100 × 300 mm |
| Power supply unit (W × L × H) | 550 × 600 × 840 mm – 1 unit 550 × 600 × 670 mm – 1 unit | 550 × 600 × 1220 mm - 2 units 550 × 600 × 670 mm – 1 unit |
| Umbilical length | 3 m | |
| OPERATING REQUIREMENTS | ||
| Water consumption (max 20° C) | < 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 phase 50/60 Hz or 208/380 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. Parameters marked typical may vary with each unit we manufacture.Unless stated otherwise, all specifications are measured at 1064 nm.
2) For NL94X-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.
