Temporaly shaped 5 – 50 ns pulses
Pulse energies up to 2 J
100 Hz pulse repetition rate
| 제조사 | 레이비스 |
|---|---|
| 가격 | TBD |
| 문의 | 02-3461-1103 |
Customized NL941 Models
- High energy nanosecond lasers
- Temporaly shaped 5 – 50 ns pulses
- Pulse energies up to 2 J
- 100 Hz pulse repetition rate
Models Features
NL941 FEATURES
- Up to 2 J at 1064 nm output pulse energy
- Bursts of up to 30 pulses at 1 kHz repetition rate or 4pulses at 20 kHz repetition rate in 20 sec periods available in burst mode
- 5 ns pulse duration
- Spatial flat top beam profile
- Temporal shaping by pulse processing with electrooptical modulator driven by arbitrary wave generator (AWG)
- High efficiency diode pumping chambers
- 1×2 m laser head footprint
NL942-SH FEATURES
- Two outputs up to 2 J at 1064 nm each
- Two outputs up to 1 J at 532 nm each
- 100 Hz repetition rate
- 50 ns pulse duration
- Spatial flat top beam profile
- Temporal shaping by pulse processing with electrooptical modulator driven by arbitrary wave generator (AWG)
- Internal system diagnostics
- High efficiency diode pumping chambers
- Industrial grade, portable laser housing with integrated power supplies and cooling unit
Description
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.
Specifications
| Model | NL941 | NL942-SH |
|---|---|---|
| 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 |
- 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 and for basic system without options.
- For NL94X-SH harmonics generator option. Harmonics outputs are not simultaneous; only single wavelength beam is present at the output at once.
- Standard deviation value averaged from 1000 shots after 20 minutes of warm-up.
- Deviation from average value measured over 8 hours of operation when room temperature variation is less than ±2 °C.
- Measured with photodiode with 100 ps rise time and oscilloscope with 600 MHz bandwidth.
- Standard deviation value, measured with respect to triggering pulse.
- Beam diameter is measured at 1064 nm at laser output at the 1/e² level and can vary with each unit we manufacture.
- Full angle measured at the 1/e² level at 1064 nm.
- Mains voltage should be specified when ordering.