제조사 | 레이비스 |
---|---|
가격 | TBD |
문의 | 02-3461-1103 |
NL941 and NL942-SH lasers were designed and manufactured according custom request and are used for plasma research. They are good examples of what can be achieved when long time experience and latest technologies are put together.
Main laser feature is output of temporaly shaped pulses based on electrooptical modulator driven by programable arbitrary wave generator (AWG). Pulse shaping resolution is 125 ps and pulse duration up to 50 ns. Start of the system is a single mode CW laser. Then light is amplified in fiber 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 level sufficient to amplify in single-pass / double-pass diode pumped amplifiers.
Diode pumping enables generating bursts of pulses with up to 20 kHz frequency in burst mode. Power amplifier is a chain of diode pumped single-pass amplifiers where pulse is amplified up to required energy. During amplification spatial beam shaping is employed in order to get a flat top shape at the output. Optional second and third harmonic generators are based on angle tuned nonlinear crystals placed in heaters.
Model | NL941 | NL942-SH |
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MAIN SPECIFICATIONS 1) | ||
Pulse energy | ||
at 1064 nm | 2000 mJ | 2 × 1700 mJ |
at 532 nm 2) | – | 2 × 900 mJ |
Pulse energy stability (StdDev): 3) | ||
at 1064 nm | 1.0 % | |
at 532 nm | – | 2.0 % |
Power drift 4) | ± 2 % | |
Pulse duration 5) | 5 ns | 50 ns |
Repetition rate | 20 kHz | 100 Hz |
Polarization at 1064 nm | 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) | ~12 mm | ~10 mm |
Beam divergence 8) | < 0.5 mrad | |
Beam pointing stability | ± 50 µrad | |
PHYSICAL CHARACTERISTICS | ||
Laser head (W × L × H) | 1000 × 2000 × 400 mm | 1000 × 2000 × 1800 mm |
Power supply unit (W × L × H) | 550 × 600 × 500 mm | – |
Umbilical length | 3 m | – |
OPERATING REQUIREMENTS | ||
Facility water consumption (max 20° C) | 8 l/min | 20 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 | 2.0 kW | 9.4 kW |