Bandpass Polarizer

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Bandpass Polarizer

Manufactured by depositing the filter coating on fused silica, our bandpass polarizer works well in situations for when the user only wants a small wavelength range to pass through with a specific polarization.
Bandpass polarizers are reflective, reflecting away the undesired polarization. This allows bandpass polarizers to be used in a mount that makes them a beamsplitting polarizer and increases the recommended safe operating limit to levels required for use with high powered laser. Bandpass polarizers have a high transmission of over 95% and an excellent contrast ratio (1,000,000:1 or OD6). Additionally, this product can be used in precision imaging systems courtesy of its low transmitted wavefront error.
For any additional questions, please visit our website or contact your Meadowlark Optics Sales Engineer for assistance.

  • Transmission of greater than 95%
  • Contrast ratio on the order of 1,000,000 to 1
  • Blocks all light outside the wavelength range

Specifications - Bandpass Polarizer
Substrate Material Fused Silica
Standard Wavelengths 405, 532, 640 nm
 Wavelength Ranges 405: 400-410 nm
532: 518-541 nm
640: 629-650 nm
Transmitted Wavelength Distortion
≤ λ/2 (P-V @ 633)
[≤ λ/8 (RMS @ 633)]
Surface Quality 40-20 scratch-dig
Beam Deviation ≤ 10 arc-sec
Acceptance Angle 45.0˚ ± 0.5˚
Clear Aperture Central 21 mm diameter
Laser Damage Threshold 1 J/cm2, 532 nm


Ordering Information - Bandpass Polarizer
Clear Aperture
in. [mm]
in. [mm]
Central Ø0.83 [21.0] Ø1.70 [Ø43.2] PFM-170-λ


Learn More
White Paper:   Finding the Optimal Polarizer