Variable Attenuator for Femtosecond Linearly Polarized Laser Beam 990-0071

  • Divides laser beam into two beams separated by 68° angle of manually adjustable intensity ratio
  • Large dynamic range
  • Negligible transmitted beam deviation
  • High optical damage threshold
  • Attenuation range for transmitted beam: 0.5%-95% Attenuation range for reflected beam: 5%-99.5%

This variable attenuator/beamsplitter consists of special design opto-mechanical adapter for polarizer at 56° 840-0117A or 840-0118A and precision opto-mechanical holder 840-0197. Thin Film Brewster type polarizer, which reflect s-polarized light at 56° while transmitting p-polarized light, is housed into adapter for polarizer at 56°. Quartz Half Waveplates are housed in rotating holder 840-0197. 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 polarizer by ±2° and to get the maximum polarization contrast.

Delivery

Estimated delivery time: from 4 - 5 days

Wavelength

 Zero order optically contacted half waveplate  is housed in rotating holder 840-0197 for femtosecond laser pulses (laser damage threshold: >10 mJ/cm2, 50 fs pulse at 800 nm, typical)

Code Wavelength Price Delivery Add to cart
990-0071-343 343 nm 660 $ Request To cart
990-0071-400 400 nm 605 $ Request To cart
990-0071-400B 390-410 nm 715 $ Request To cart
990-0071-515 515 nm 605 $ Request To cart
990-0071-515B 505-525 nm 715 $ Request To cart
990-0071-800 800 nm 605 $ Request To cart
990-0071-800B 780-820 nm 715 $ Request To cart
990-0071-1030 1030 nm 605 $ 4 - 5 days To cart
990-0071-1030B 1010-1050 nm 715 $ Request To cart

Zero Order Air-Spaced half waveplate  is housed in rotating holder 840-0197 for high power laser applications (laser damage threshold: >100 mJ/cm2, 50 fs pulse at 800 nm, typical)

Code Wavelength Price Delivery Add to cart
990-0071-266H 266 nm 759 $ 4 - 5 days To cart
990-0071-343H 343 nm 732 $ 4 - 5 days To cart
990-0071-400H 400 nm 677 $ 4 - 5 days To cart
990-0071-400HB 390-410 nm 787 $ Request To cart
990-0071-515H 515 nm 677 $ 4 - 5 days To cart
990-0071-515HB 505-525 nm 787 $ 4 - 5 days To cart
990-0071-800H 800 nm 677 $ 4 - 5 days To cart
990-0071-800HB 780-820 nm 787 $ 4 - 5 days To cart
990-0071-1030H 1030 nm 677 $ 4 - 5 days To cart
990-0071-1030HB 1010-1050 nm 787 $ 4 - 5 days To cart
Delicious


For Femtosecond Applications

Aperture diameter 10 mm
Damage threshold
            for high power laser applications:
>10 mJ/cm2, 50 fs pulse at 800 nm, typical
>100 mJ/cm2, 50 fs pulse at 800 nm, typical
Time dispersion t<4 fs for 100 fs Ti:Sapphire laser pulses
Polarization Contrast >1:200
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