LASNIX‘ Continuously Variable Attenuators for CO2 Lasers precisely control power and polarisation of a transmitted CO2 laser beam. The other beam parameters such as alignment stay unaffected.
LASNIX‘ Continuously Variable Attenuators for CO2 Lasers precisely control power and polarisation of a transmitted CO2 laser beam. The other beam parameters such as alignment stay unaffected.
The instrument contains two rotatable grid polarisers in a compact housing. It can be used alone or directly mounted on a CO2 laser. Both grids rotate smoothly and independently.
Direct, calibrated scales serve two different purposes:
(i) rotating the first grid smoothly attenuates the transmitted power down to four orders of magnitude, while keeping the polarisation direction constant;
(ii) rotating the second grid sets the polarisation direction of the transmitted beam at an arbitrary angle, independent of the input polarisation.
Since the polariser grids are freely suspended, i.e. have no substrate, they can not offset the beam in contrast to common substrate-bound optical elements. The polarised transmitted beam passes undeviated even at the upper power limit. The mode structure and other beam properties, including the divergence and M² parameters are fully preserved.
| Model No. | Wavelength Range | Transmittance @ Orientation | Power Limit | Fluence Limit | Clear Aperture | Length | Height | Weight |
| µm | ll_____ _⊥ | W | J/cm^2 | mm | mm | mm | 9 | |
| 401 | 9.8-10.4 9.2-10.8 |
> 0.6 < 0.00006 > 0.4 < 0.00006 |
30 | 1 | 6 | 46 | 50 | 200 |
|---|
Beam quality control
Spectroscopy
High-contrast Polarimetry
Ellipsometry
Nonlinear studies
Detector calibration
Heterodyne systems
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Photonic Solutions Ltd
Unit 2.2 Quantum Court
Heriot-Watt University Research Park
Edinburgh
EH14 4AP
