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  • Brewster Angle Prisms
  • Brewster Angle Prisms

Brewster Angle Prisms

  • Low loss for P-Polarized beam
  • Selecting single wavelength from multi-wavelength laser
  • Tuning by tilting of prism
  • Variety substrate materials: BK7, Fused Silica, MgF2, CaF2, N-SF10 ect.
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Material N-BK7, Fused Silica, MgF2, N-SF10... Range of Size /
Dimension Tolerance +0.0/-0.2mm Surface Quality 40/20 S/D
Clear Aperture >90% Flatness <λ/4@632.8nm
Angle Tolerance <5 arc minutes Polished Surface Two side surfaces polished, base is fine ground
Chamfer Protective<0.5mmx45° Coating None,available

Brewster Prisms has an apex angle such that a p-polarized ray incident at Brewster's angle will pass through the prism parallel to the base at minimum deviation, and exit also at Brewster's angle. In this case surface reflection losses are negligible. Brewster Prisms are often used in situations where surface reflection losses cannot be tolerated. Brewster Prisms are also frequently used to select a single wavelength from a multi-wavelength laser. Tuning is accomplished by tilting the prism.