Features
- 10 mJ at 1064 nm
- 1 kHz pulse repetition rate
- Close to TEM₀₀ beam profile
- Simple and robust all-solid-state design
- Internal/external triggering
- Short warm-up time
- Water-to-air cooling (external water service is not required)
- Optional temperature stabilized second, third and fourth harmonic generators
- PC control via USB (RS232 is optional) with supplied LabVIEW™ drivers
- Remote control via keypad
Applications
- OPO, Ti:Sapphire and dye laser pumping
- PIV
- Laser spectroscopy
- Material ablation
- Micromachining
- Your application is welcome…
NL220 series diode pumped Q-switched lasers produce up to 10 mJ at a 1 kHz or up to 15 mJ at a 100 Hz pulse repetition rate.
The laser is designed to produce high intensity, high brightness pulses and is targeted for applications like OPO, Ti:sapphire or dye laser pumping, nonlinear spectroscopy, material ablation, micromachining, and other tasks.
Thanks to the use of an electro-optical type of Q-switch, the master oscillator produces pulses with a short pulse duration of 8 ns, nearly TEM₀₀ beam profile and nearly diffraction-limited divergence. The M² factor of the beam was measured to be less than 1.5.
When lower pulse repetition rates are acceptable, the laser can be configured for a 100 Hz or 200 Hz repetition rate and higher (up to 15 mJ) output pulse energy.
Laser cooling uses a closed loop chiller, thus eliminating the need for external cooling water, and reducing running costs.
For PIV applications a double-pulse version of this laser is available.
Angle-tuned LBO and/or BBO crystals mounted in temperature stabilized heaters are used for optional second, third or fourth harmonic generation. The harmonics separation system is designed to ensure a high spectral purity of radiation directed to separate output ports.
For customer convenience the laser can be controlled from a user-friendly remote control pad or USB interface. The remote pad allows easy control of all parameters and features a backlit display that is easy to read even while wearing laser safety eyewear.
Alternatively, the laser can be controlled from a personal computer with supplied software for a Windows™ operating system. LabVIEW™ drivers are supplied as well.
| Model |
NL220S |
| Pulse energy, mJ: |
| at 1064 nm |
10 |
| at 532 nm 2) |
5 |
| at 355 nm 3) |
3 |
| at 266 nm 4) |
1 |
| Pulse duration, ns 5) |
6-8 |
| Pulse to pulse energy stability, 6) |
< 1.5 % rms at 1064 nm. |
| Pulse repetition rate, Hz 7) |
1000 |
| Beam profile |
close to TEM00 , > 90 % Gaussian fit |
| Elipticity |
<1.2 |
| M2 |
<1.5 |
| Beam divergence, mrad 8) |
< 1.5 |
| Pointing stability, µrad rms |
<20 |
| Polarization |
linear, > 95 % |
| Typical beam diameter, mm 9) |
2.5 |
| SYNC OUT pulse jitter 10) ns rms |
<0.5 |
| Optical pulse jitter 11) ns rms |
< 0.5 |
| Physical characteristics |
| Laser head (W×L×H), mm |
455×826×260 |
| Power supply unit (W×L×H), mm |
365×392×289 |
| Chiller |
please inquire, depends on location |
| Operating requirements |
| Water service |
not required |
| Ambient temperature, °C |
18–27 |
| Relative humidity (noncondensing), % |
20–80 |
| Mains voltage |
100–240 VAC, single phase 50/60 Hz |
| Power consumption, kVA |
< 1 |
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 1064 nm.
2) For NL220S-SH option. Outputs are not simultaneous. The laser performance is specified for SH wavelength; specifications for other wavelengths may differ from that indicated above.
3) For NL220S-TH option. Outputs are not simultaneous. The laser performance is specified for TH wavelength; specifications for other wavelengths may differ from that indicated above.
4) For NL220S-FH option. Outputs are not simultaneous. The laser performance is specified for FH wavelength; specifications for other wavelengths may differ from that indicated above.
5) FWHM at 1064 nm, measured with at 5 Gs/s oscilloscope and photodiode with 1 ns rise time.
6) Averaged from 300 pulses.
7) Optional 100 Hz or 200 Hz pulse repetition rate. Pulse energy specifications are 50% higher for 100 Hz version and 30% higher for 200 Hz version.
8) Full angle measured at the 1/e² point at 1064 nm.
9) Beam diameter is measured at 1064 nm at the 1/e² point.
10) In internal triggering mode. Typical lead time is 220 ns in respect to optical pulse.
11) In external triggering mode when triggered with two separate pulses for pump diodes and Q-switch.
Requests for custom-made products are welcome.
