This optical attenuator can be used at wavelengths between 0.35-2.0μm. Maximum continuous rating is 200W/cm2 and peak power handling is up to 500MW/cm2 for q-switched pulses. If the attenuator is used with plane polarized light the maximum transmission is 90% and with unpolarized light the maximum transmission is 40%.
The input polarizer is rotated through 90o and energy in the side exit beam is dumped onto a light absorbing block. If required the block can be removed and the side exit beam allowed to leave the attenuator.
The new design gives you the following improvements:
- The new rotation mounts are much smoother to adjust.
- Easier readout of the position because of the better indexing ring.
- Much smaller than the old unit.
- Has the flexibility of being able to be pin-mounted (like the old unit) or incorporated into a Thorlabs 30mm cage system.
Glan-Taylor Polarizers Product Specification
| Polarizer Model | GT 10 | GT 12 | GT 15 | GT 18 | GT 20 | GT 25 | GT 30 |
|---|---|---|---|---|---|---|---|
| Nominal Aperture (mm) | 10 | 12 | 15 | 18 | 20 | 25 | 30 |
| Clear Aperture (mm) | 9 | 11 | 14 | 17 | 19 | 24 | 29 |
| Width (un-mounted, mm) | 12 | 14 | 17 | 20 | 22 | 27 | 32 |
| Height (un-mounted, mm) | 10 | 12 | 15 | 18 | 20 | 25 | 30 |
| Length (mm, ±1mm) | 11 | 15 | 18 | 21 | 24 | ||
| Transmission Range | 0.2 - 2.5μm | 0.2 - 2.5μm | 0.2 - 2.5μm | 0.2 - 2.5μm | 0.2 - 2.5μm | 0.2 - 2.5μm | 0.2 - 2.5μm |
| Extinction Ratio | 10-5 | 10-5 | 10-5 | 10-6 | 10-6 | 10-6 | 10-6 |
| Transmission Un-Coated | ~88% | ~88% | ~88% | ~88% | ~88% | ~88% | ~88% |
| Peak Transmission Coated | ~94% | ~94% | ~94% | ~94% | ~94% | ~94% | ~94% |
| Maximum Beam Deviation | 3 min | 3 min | 3 min | 2 min | 2 min | 2 min | 2 min |
| Maximum Optical Power Pulsed (polished side exit) | 300MWcm-2 for <10ns pulse | 300MWcm-2 for <10ns pulse regime | 300MWcm-2 for <10ns pulse regime | 300MWcm-2 for <10ns pulse regime | 300MWcm-2 for <10ns pulse regime | 300MWcm-2 for <10ns pulse regime | 300MWcm-2 for <10ns pulse regime |
| Maximum Optical Power CW (polished side exit) | 300Wcm-2 | 300Wcm-2 | 300Wcm-2 | 300Wcm-2 | 300Wcm-2 | 300Wcm-2 | 300Wcm-2 |
| Mount Diameter (mm) | 25 | 25 | 35 | 35 | 35 | 50 | 50 |
Also see component mounting options