Plate Polarizers

Perkins Precision Developments (PPD) manufactures Brewster’s angle polarizers as well as 45 degree plate polarizers for high performance with easy alignment. Because we utilize Ion Beam Sputtered (IBS) coating technology, our dielectric thin film plate polarizers are environmentally stable, thus there is no spectral shift caused by either time, moisture or temperature. The predictability and repeatability of IBS thin film coatings allow us to guarantee high transmission at a specific angle of incidence, eliminating the need to angle tune the optical component in order to achieve optimal performance.
As with all of our custom laser optics and polarizers, PPD's IBS coated polarizing beam splitters exhibit low absorption, high extinction (Tp/Ts) and high damage thresholds, making them ideal for use with high energy Nd:YAG and fibers lasers as well as other high-power pulsed and CW laser systems throughout the visible and near-infrared. 
Our low overhead structure and production flexibility are designed to maximize both quality and value to our customers. Please send us your requests for custom, precision laser optics for either prototype or volume OEM requirements.


  • No angle tuning required
  • Environmentally stable
  • Durable and easy to clean
  • High damage threshold
  • High Extinction Ratio
  • High transmission (Tp)
  • RoHS compliant


  • 45 degree polarizers
  • Brewster polarizers
  • Laser-line polarizers
  • Dichroic polarizers
  • Low-loss ARs to R < 0.1%
  • 250nm to 3000nm
  • IBS Coatings on CFM


Manufacturing Typical Best
Size 10mm-2" 2mm-4"
Surface Quality 10-5 0-0
Flatness(p-v)* λ/10 λ/50
TWD (p-v) λ/10 λ/50
Roughness (RMS) 2-3Å < 1Å (superpolish)
OD Tolerance +0.0/- 0.1mm +0.0/- 0.025mm
Thickness Tolerance ± 0.05mm ± 0.01mm
Clear Aperture 85% 100%
Wedge < 30 arcsec < 1 arcsec
Reflectivity Rs > 99.8% Rs > 99.9%
AOI 56° or 45° custom
Transmission Tp  95% Tp > 99%
Ext Ratio Tp/Ts > 750:1 > 5000:1
AR Coating R < 0.2% R < 0.05%
* Before coating or after coating with Power removed.
Contact us for information on stress compensated coatings.