High contrast dichroic sheet polarizer is made of dichroic film sandwiched by two glass plates. When a natural beam transmits through the dichroic material, one of the orthogonal polarization component of the beam is strongly absorbed and the other goes out with a weak absorption. So, dichroic sheet polarizer can be used to convert randomly polarized beam into linearly polarized beam. Compared with polarizing prisms, dichroic sheet polarizer offers a much bigger size and acceptable angle, but it can not be used in high power applications.


Basic Parameters

Substrate MaterialBK7 or B270
Product IDPA02009
Dimension Tolerance+0/-0.2mm
Thicknessaround 2.5mm
Surface Quality60/40 scratch and dig
Clear Aperture>90%
Acceptable Angle>20deg
Working Wavelength400-700nm
Extinction Ratio>1000:1
Single Transmission for Parallel Polarized Beam>70%@632.8nm
Damage Threshold>10W/cm2 Continuous Pass, >1W/cm2 Continuous Block


  • Working Wavelength 400-700nm
  • High Extinction Ratio >1000:1
  • Large Size Available
  • Acceptable Angle >20Deg
  • RoHS Compliant
Dichroic Sheet Polarizer Spectrogram
Dichroic Sheet Polarizer Spectrogram

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