Thin film laser optical polarizer
Optolita
- provide the achievement of strictly linear polarization of laser radiaton
- utilize the polarization wich occurs on reflection from a plane surface
- high damage threshold reaching 10 J/cm2
- extinction ratio 200:1
Thin Film Polarizers separate the s- and p-polarization components. They are designed for use in high energy lasers. Due to high damage threshold, reaching 10 J/cm2 @ 1064 nm 8 ns, Thin Film Polarizers are used as an alternative to Glan-Taylor laser polarising prisms or cube polarising beamsplitters.
Typical applications are intracavity Q-switch hold-off polarizer or extracavity attenuator for Nd:YAG lasers.
Thin Film Polarizers can be used at an >40 deg angle of incidence, but polarization is most efficient and appears in a broad wavelength range at 55 deg AOI (Brewster angle). Typical polarization ratio is 200:1.
Standard size is up to 50mm (2'') diameter, while max. available dimensions are 100x200 mm. For optimal transmission Thin Film Polarizer should be mounted in an appropriate holder for angular adjustment.
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