Features
- Hands-free, automated wavelength tuning from 680 to 2600 nm
- Up to 100 mJ pulse energy in near-IR spectral range
- Narrow linewidth across tuning range
- 3–5 ns pulse duration
- 10 or 20 Hz pulse repetition rate
- Remote control pad
- PC control via RS232 and LabVIEW TM drivers
- Separate output port for 532 nm beam. Output for 1064 nm is optional
- OPO pump energy monitoring
- Replacement of flashlamps can be done without misalignment of the laser cavity
- Hermetically sealed oscillator cavity protects non-linear crystals from dust and humidity
Applications
- Photoacoustic imaging
- Flash photolysis
- Photobiology
- Remote sensing
- Time-resolved spectroscopy
- Non-linear spectroscopy
- Other laser spectroscopy applications
NT350 series tunable laser seamlessly integrates in a compact housing a nanosecond optical parametric oscillator and Nd:YAG Q-switched laser.
Three models with different output pulse energy values are offered. The most powerful model has more than 100 mJ pulse energy at 800 nm.
Because of the narrow linewidth of output radiation (<10 cm-1) that is nearly constant throughout the entire tuning range, the laser is suitable for many laser spectroscopy applications.
The device is controlled from a remote keypad or a PC via RS232 interface using LabVIEW TM drivers that are supplied with the system. The remote pad features a backlit display that is easy to read even when wearing laser safety glasses.
The system is designed for easy and cost-effective maintenance. Replacement of flashlamps can be done without misalignment of the laser cavity and deterioration of laser performance. An OPO pump energy monitoring system helps to increase the lifetime of the optical components.
Optional items are available to optimize the laser system for your application, for example:
- Fibre coupled output in 680-1000 nm range
- Tuning range extension up to 2600 nm
- Pulse energy attenuator
- Water-air cooled power supply
Please inquire for custom-built versions and options.
Specifications 1)
| Model |
NT352 |
NT352A |
NT352B |
| OPO |
| Wavelength range |
| Signal |
680-1030 nm |
| Idler 2) |
1090-2300 nm |
| OPO output pulse energy3) |
30 mJ |
60 mJ |
100 mJ |
| Linewidth |
10 cm-1 |
| Scanning step: |
| Signal (680-1030 nm) |
0.1 nm |
| Idler (1090-2300 nm) |
1 nm |
| Pulse duration4) |
3-5 ns |
| Typical beam diameter5) |
6 mm |
8 mm |
10 mm |
| Typical beam divergence6) |
10 mrad X-axis
2 mrad Y-axis |
| Polarization |
| Signal beam |
horizontal |
| Idler beam |
vertical |
| Pump laser7) |
| Pump wavelength |
532 nm |
| Max pump pulse energy |
110 mJ |
230 mJ |
400 mJ |
| Beam quality |
"Hat-top" in near and near Gaussian in far fields |
| Beam divergence |
< 0.5 mrad |
| Pulse energy stability (Std. Dev.) |
< 2.5 % |
| Pulse repetition rate |
10 or 20 Hz |
10 Hz |
| Physical characteristics |
| Unit size (WxHxL), mm |
450x270x610 mm |
450x270x1020 mm |
| Power supply size (WxHxL), mm |
330x670x520 mm |
550x530x600 mm |
| Umbilical length, m |
2.5 m |
| Operating requirements |
| Water consumption (max 20 °C) 8) |
6 l/min |
10 l/min |
| Room temperature |
15-30 °C |
| Relative humidity (noncondensing) |
20-80 % |
| Mains requirements |
208 or 230 VAC, single phase 50/60 Hz |
| Power consumption9) |
1.0/1.5 kVA |
2.5 kVA |
1) All specifications are subject to change without notice. Parameters marked typical are not specifications. They are indications of typical performance and will vary with each unit we manufacture. Unless stated otherwise, all specifications are measured at 800 nm.
2) Tuning range extension to 2600 nm is optional.
3) Measured at 800 nm. See tuning curves for typical outputs at other wavelengths.
4) FWHM measured with photodiode featuring 1 ns rise time and 300 MHz bandwidth oscilloscope.
5) Beam diameter is measured at 800 nm at the FWHM level and can vary depending on the pump pulse energy.
6) Full angle measured at the FWHM level at 800 nm.
7) Separate output port for the 532 nm beam is standard. Output for 1064 nm beam is optional. Pump laser data represents typical values; pump laser output will be optimised for OPO operation and specifications may vary with each unit we manufacture.
8) Air cooled power supply is available as option.
9) At 10/20 Hz pulse repetition rate.
