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Variable Attenuator for Femtosecond Linearly Polarized Laser Pulses 990-0070

  • Suitable for femtosecond applications
  • Divides laser beam into two parallel beams of manually adjustable intensity ratio
  • Large dynamic range
  • Negligible beam deviation
  • High Optical damage threshold
  • Low dispersion for femtosecond and high energy laser pulses

This variable attenuator/beamsplitter consists of special design opto-mechanical Adapter and precision opto-mechanical Holder 840-0197. Two Thin Film Brewster type polarizers, which reflect s-polarized light while transmitting p-polarized light, are housed into Adapter. A quartz Zero Order (optically contacted) Half Waveplate housed in rotating holder 840-0197 is placed in the incident polarized laser beam. The intensity ratio of those two beams may be continuously varied without alteration of other beam parameters by rotating the waveplate. The intensity of either exit beam, or their intensity ratio, can be controlled over a wide dynamic range. P-polarization could be selected for maximum transmission, or high-purity s-polarization could be reflected when maximum attenuation of the transmitted beam takes place. The holder 840-0197 allows to adjust Angle Of Incidence of the Thin Film Brewster type polarizers by ±2° and to get the maximum polarization contrast.

Damage treshold: 0,5 J/cm2 pulsed at 1064 nm, typical

Code Wavelength, nm Item price, USD In stock Quantity
990-0700-343 343 Request Request Add to basket
990-0070-400 400 Request Request Add to basket
990-0070-515 515 Request Request Add to basket
990-0070-800 800 Request Request Add to basket
990-0070-1030 1030 Request Request Add to basket

For high power application we offer the same but with Zero Order Air-Spaced half waveplate.
Damage treshold: 5 J/cm2 pulsed at 1064 nm, typical
Code Wavelength, nm Item price, USD In stock Quantity
990-0700-343H 343 Request Request Add to basket
990-0070-400H 400 Request Request Add to basket
990-0070-515H 515 Request Request Add to basket
990-0070-800H 800 Request Request Add to basket
990-0070-1030H 1030 Request Request Add to basket
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