Frequently Asked Questions

Thin Film Polarizers are designed for use in high energy lasers as an alternative to Glan laser polarizing prisms or cube polarizing beamsplitters. Typical applications are intracavity Q-switch hold-off polarizers or extracavity attenuators for Nd:YAG lasers.

Thin Film Polarizers can be used at an >40° angle of incidence, but polarization is most efficient and appears in a broad wavelength range at 56° AOI (Brewster angle).

The standard size for Thin Film Polarizers is up to Ø50 mm (2”), while max available dimensions are 100×200 mm.

The laser damage threshold for Thin Film Polarizers is high, reaching 10 J/cm² @ 1064 nm 8 ns.

The typical polarization ratio TP/TS is 200:1.

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