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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:

  1. The new rotation mounts are much smoother to adjust.
  2. Easier readout of the position because of the better indexing ring.
  3. Much smaller than the old unit.
  4. Has the flexibility of being able to be pin-mounted (like the old unit) or incorporated into a Thorlabs 30mm cage system.
High Power Attenuator Using Glan Taylor Polarizer - Standard Unit
High Power Attenuator Using Glan Taylor Polarizer - Precision Unit

Glan-Taylor Polarizers Product Specification

Polarizer ModelGT 10GT 12GT 15GT 18GT 20GT 25GT 30
Nominal Aperture (mm)10121518202530
Clear Aperture (mm)9111417192429
Width (un-mounted, mm)12141720222732
Height (un-mounted, mm)10121518202530
Length (mm, ±1mm)1115182124
Transmission Range0.2 - 2.5μm0.2 - 2.5μm0.2 - 2.5μm0.2 - 2.5μm0.2 - 2.5μm0.2 - 2.5μm0.2 - 2.5μm
Extinction Ratio10-510-510-510-610-610-610-6
Transmission Un-Coated~88%~88%~88%~88%~88%~88%~88%
Peak Transmission Coated~94%~94%~94%~94%~94%~94%~94%
Maximum Beam Deviation 3 min3 min3 min2 min2 min2 min2 min
Maximum Optical Power
Pulsed (polished side exit)
300MWcm-2 for <10ns pulse 300MWcm-2 for <10ns pulse regime300MWcm-2 for <10ns pulse regime300MWcm-2 for <10ns pulse regime300MWcm-2 for <10ns pulse regime300MWcm-2 for <10ns pulse regime300MWcm-2 for <10ns pulse regime
Maximum Optical Power CW (polished side exit)300Wcm-2300Wcm-2300Wcm-2300Wcm-2300Wcm-2300Wcm-2300Wcm-2
Mount Diameter (mm)25253535355050

Also see component mounting options

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