Variable Attenuators for Linearly Polarized Laser Beam 990-0070

  • Divides laser beam into two parallel beams of manually adjustable intensity ratio
  • Large dynamic range
  • Transmitted beam shift ~0.5 mm
  • High Optical damage threshold
  • S-Pol attenuation range ~ 0.25% - 99.0%
  • P-Pol attenuation range ~ 0.5 % - 95.0 %  

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. 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 polarizers by ±2° and to get the maximum polarization contrast.

 

Note: Movable base 820-0090, Rod Holder 820-0050-02 and standard rod should be ordered separately.

Delivery

Estimated delivery time: from 4 - 5 days

Wavelength, nm

For Nd:YAG Laser Application

Multi order half waveplate is housed in rotating holder 840-0197 for Nd:YAG laser pulses (laser damage threshold: 5 J/cm² pulsed at 1064 nm, typical).

Code Wavelength, nm Price Delivery Add to cart
990-0070-266 266 935 $ Request To cart
990-0070-355 355 825 $ 4 - 5 days To cart
990-0070-532 532 715 $ 4 - 5 days To cart
990-0070-1064 1064 715 $ 4 - 5 days To cart

For Femtosecond Applications

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, nm Price Delivery Add to cart
990-0070-343 343 924 $ Request To cart
990-0070-400 400 814 $ 4 - 5 days To cart
990-0070-400B 390-410 979 $ Request To cart
990-0070-515 515 814 $ Request To cart
990-0070-515B 505-525 979 $ Request To cart
990-0070-800 800 814 $ 4 - 5 days To cart
990-0070-800B 780-820 979 $ 4 - 5 days To cart
990-0070-1030 1030 814 $ Request To cart
990-0070-1030B 1010-1050 979 $ Request To cart

For High Power Femtosecond Laser Applications

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

Code Wavelength, nm Price Delivery Add to cart
990-0070-266H 266 1122 $ 4 - 5 days To cart
990-0070-343H 343 1007 $ Request To cart
990-0070-400H 400 897 $ 4 - 5 days To cart
990-0070-400HB 390-410 1062 $ 4 - 5 days To cart
990-0070-515H 515 897 $ 4 - 5 days To cart
990-0070-515HB 505-525 1062 $ Request To cart
990-0070-800H 800 897 $ 4 - 5 days To cart
990-0070-800HB 780-820 1062 $ 4 - 5 days To cart
990-0070-1030H 1030 897 $ 4 - 5 days To cart
990-0070-1030HB 1010-1050 1062 $ 4 - 5 days To cart
Delicious

For Nd:YAG Applications 

Aperture diameter 17 mm
Damage threshold 5 J/cm2 pulsed at 1064 nm, typical
Polarization Contrast (after 1st polarizer) >1:200
Polarization Contrast (after 2nd polarizer) >1:500

  

For Femtosecond Applications  

Aperture diameter 17 mm
Damage threshold                                                            >10 mJ/cm², 50 fs pulse at 800 nm, typical
for high power laser applications                                  >100 mJ/cm², 50 fs pulse at 800 nm, typical
Time dispersion  t<4 fs for 100 fs Ti:Sapphire laser pulses
Polarization Contrast (after 1st polarizer)  >1:200
Polarization Contrast (after 2nd polarizer)  >1:500

 

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