SLM high energy Q-switched Nd:YAG Lasers NanoFlux SLM – EKSPLA
- ️Fri Jan 31 2025
NanoFlux SLM series
Single Mode (SLM) High Energy Q-switched Nd:YAG Lasers
NanoFlux SLM series electro-optically Q-switched nanosecond Nd:YAG lasers deliver up to 10 J per pulse with excellent stability. These systems are an excellent choice for many applications, including OPO, OPCPA or dye laser pumping, holography, LIF spectroscopy, remote sensing, optics testing and other tasks.
Features
- Up to 10 J pulse energies
- 2 – 25 ns pulse durations
- 10 Hz pulse repetition rate
- Diode-pumped, self-seeded Single Longitudinal Mode (SLM) master oscillator
- Stable master oscillator cavity producing TEM₀₀ spatial mode output
- Excellent pulse energy stability
- Cost effective flash lamp pumped power amplifier
- Standard 2 ns pulse duration (2 – 25 ns are optional)
- Temperature stabilized harmonics generator options
- Control through keypad, USB and LAN interfaces with supplied Windows control software (RS232 as optional)
Applications
- Material processing
- OPO, OPCPA, Ti:Sapphire, dye laser pumping
- Holography
- Nonlinear laser spectroscopy
- Optics testing
Description
NanoFlux SLM series electro-optically Q-switched nanosecond Nd:YAG lasers deliver up to 10 J per pulse with excellent stability. These systems are an excellent choice for many applications, including OPO, OPCPA or dye laser pumping, holography, LIF spectroscopy, remote sensing, optics testing and other tasks.
The innovative, diode‑pumped, self‑seeded master oscillator design results in Single Longitudinal Mode (SLM) output without the use of external expensive narrow linewidth seed diodes and cavity‑locking electronics. Unlike more common designs that use an unstable laser cavity, the stable master oscillator cavity produces a TEM₀₀ spatial mode output that results in excellent beam properties after the amplification stages. For tasks that require a smooth and as close as possible to the Gaussian beam profile, models with improved Gaussian fit are available.
NanoFlux series linear amplifiers are cost effective solution for high energy nanosecond systems. Advanced beam shaping ensures smooth, without hot spots beam spatial profile at the laser output. Low light depolarization level allows high efficiency generation of up to 4th harmonic with optional build-in harmonic generators. The simple and field proven design ensures easy maintenance and reliable long-term operation of the NanoFlux SLM series laser.
Angle-tuned non-linear crystals harmonic generators mounted in temperature stabilized heaters are used for second, third and fourth harmonic generation. Harmonic separation system is designed to ensure high spectral purity of radiation and direct it to the output ports. Harmonic generators can be integrated into laser head or placed outside laser head into auxiliary harmonic generator module. Output wavelength switching is done manually. Motorized wavelength switching is available by request.
The low jitter of the optical pulse with respect to the Q-switch triggering pulse allows the reliable synchronization between the laser and external equipment.
System control is available through control pad, USB and LAN interfaces (RS232 as optional). The system can be controlled from personal computer with supplied software for Windows operating system.
Specifications
| Model | NanoFlux N2k10-SLM | NanoFlux N5k10-SLM | NanoFlux N10k10-SLM |
|---|---|---|---|
| Main specifications 1) | |||
| Output energy | |||
| at 1064 nm | 2000 mJ | 5000 mJ | 10000 mJ |
| at 532 nm 2) 3) | 1000 mJ | 2500 mJ | 5000 mJ |
| at 355 nm 2) | 450 mJ | 1300 mJ | 2500 mJ |
| at 266 nm 2) | 140 mJ | 750 mJ | 1500 mJ |
| Pulse repetition rate | 10 Hz | 10 Hz | 10 Hz |
| Pulse duration 4) | 2 ± 0.5 ns | 2 ± 0.5 ns | 2 ± 0.5 ns |
| Pulse energy stability 5) | |||
| at 1064 nm | ≤ 0.8 % | ≤ 0.8 % | ≤ 0.8 % |
| at 532 nm | ≤ 1.5 % | ≤ 1.5 % | ≤ 1.5 % |
| at 355 nm | ≤ 3 % | ≤ 3 % | ≤ 3 % |
| at 266 nm | ≤ 4 % | ≤ 4 % | ≤ 4 % |
| Long-term power drift 6) | ± 2 % | ± 2 % | ± 2 % |
| Beam spatial profile 7) | Super-Gaussian | Super-Gaussian | Super-Gaussian |
| M2 8) | 4.4 | 6.6 | 9.2 |
| Beam diameter 9) | ~ 12 mm | ~ 18 mm | ~ 25 mm |
| Beam pointing stability 10) | ≤ 25 µrad | ≤ 25 µrad | ≤ 25 µrad |
| Beam divergence | ≤ 0.5 mrad | ≤ 0.5 mrad | ≤ 0.5 mrad |
| Optical pulse jitter 11) | ≤ 0.2 ns | ≤ 0.2 ns | ≤ 0.2 ns |
| Linewidth | ≤ 0.01 cm‑1 (SLM) | ≤ 0.01 cm‑1 (SLM) | ≤ 0.01 cm‑1 (SLM) |
| Polarization | linear, >90 % | linear, >90 % | linear, >90 % |
| Physical characteristics 12) | |||
| Laser head size (W×L×H mm) | 455 × 1220 × 270 | 600 × 1500 × 300 | 700 × 2000 × 300 |
| Power supply size (W×L×H mm) | 550 × 600 × 1030 | 550 × 600 × 1030 – 2 units | 550 × 600 × 1650 – 2 units |
| Umbilical length 13) | 5 m | 5 m | 5 m |
| Operating requirements 14) | |||
| Power requirements 15) | 208, 380 or 400 V AC, three phase, 50/60 Hz | 208, 380 or 400 V AC, three phase, 50/60 Hz | 208, 380 or 400 V AC, three phase, 50/60 Hz |
| Power consumption 16) | ≤ 5 kVA | ≤ 6 kVA | ≤ 8 kVA |
| Water supply 16) | ≤ 5 l/min, 2 Bar, max 15 °C | ≤ 7 l/min, 2 Bar, max 15 °C | ≤ 10 l/min, 2 Bar, max 15 °C |
| Operating ambient temperature | 22 ± 2 °C | 22 ± 2 °C | 22 ± 2 °C |
| Storage ambient temperature | 15 – 35 °C | 15 – 35 °C | 15 – 35 °C |
| Relative humidity (non-condensing) | ≤ 80 % | ≤ 80 % | ≤ 80 % |
| Cleanness of the room | ISO Class 7 | ISO Class 7 | ISO Class 7 |
- Due to continuous improvement, all specifications are subject to change without notice. The parameters marked ‘typical’ are indications of typical performance and will vary with each unit we manufacture. Presented parameters can be customized to meet customer‘s requirements. All parameters measured at 1064 nm if not stated otherwise.
- Harmonic outputs are optional. Specifications valid with respective harmonic module purchased. Outputs are not simultaneous.
- Second harmonic is available with LBO crystal then the conversion efficiency is increased to 70%. If TH/FH options are ordered second harmonic efficiency is reduced to ~50 %.
- Standard pulse duration is 2 ns. Other pulse durations can be ordered within range of 2 – 25 s. Output energy might differ depending on duration.
- Under stable environmental conditions, normalized to average pulse energy (RMS, averaged from 60 s).
- Measured over 8 hours period after 30 min warm-up when ambient temperature variation is less than ±2 °C.
- Super-Gaussian spatial mode of 6-11th order in near field.
- The stated M2 values are calculated using beam parameters. Actual measured value might differ.
- Beam diameter is measured at signal output at 1/e2 level for Gaussian beams and FWHM level for Super-Gaussian beams.
- Beam pointing stability is evaluated as movement of the beam centroid in the focal plane of a focusing element (RMS, averaged from 60 s).
- Optical pulse jitter with respect to electrical outputs: Trig out > 3.5 V @ 50 Ω.
- System sizes are preliminary and depend on customer lab layout and additional options purchased.
- Longer umbilical with up to 10 m available upon request.
- The laser and auxiliary units must be settled in such a place void of dust and aerosols. It is advisable to operate the laser in air conditioned room, provided that the laser is placed at a distance from air conditioning outlets. The laser should be positioned on a solid worktable. Access from one side should be ensured.
- Voltage fluctuations allowed are +10 % / -15 % from nominal value.
- Power consumption and water supply requirements deviate depending on system configuration.
Note: Laser must be connected to the mains electricity all the time. If there will be no mains electricity for longer that 1 hour then laser (system) needs warm up for a few hours before switching on.
Options
| Option | Description | Comment |
|---|---|---|
| – G | Provides a Gaussian-like beam profile | Reduces the output energy of fundamental by ~80% |
| – AW | Water-air cooling option | Replaces or supplements Water-to-Water cooling unit. Heat dissipation equals total power consumption |
| – N2…N25 | Longer pulse duration option | In the range of 2 – 25 ns |
Power supply
| Cabinet | Usable height | Height H,mm | Width W, mm | Depth D, mm |
|---|---|---|---|---|
| MR-9 | 9 U | 455.5 (519 1) ) | 553 | 600 |
| MR-12 | 12 U | 589 (653 1) ) | 553 | 600 |
| MR-16 | 16 U | 768 (832 1) ) | 553 | 600 |
| MR-20 | 20 U | 889 (952 1) ) | 553 | 600 |
| MR-25 | 25 U | 1167 (1231 1) ) | 553 | 600 |
- Full height with wheels.