EKSMA Round Thin Film Polarizers BK7 - 775nm 420-0127
Thin Film Polarizers are designed for use in the most demanding lasers. Due to a high laser damage threshold reaching 10 J/cm² @ 1064 nm 8 ns, they are used 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). Typical polarization ratio TP/TS is 200:1. Valuable information about where the light has been and the various physical parameters which have been acting upon it. 420-0126 Transmission @ 800 nm, Rs/Tp > 99.5/95.0 % Standard size is up to Ø50 mm (2”), while max available dimensions are 100×200 mm. For optimal transmission a Thin Film Polarizer should be mounted in an appropriate holder for angular adjustment.
- Substrate Material: N-BK7
- Polarizing Material: Not Available
- Shape: Round
- Size: 12.5 mm
- Wavelength Range: 775 - 775 nm
- Max Extinction Ratio: >= 100:1
- Surface Flatness: <= Lambda/10
- Surface Quality (Scratch-Dig): 20-10
Designed for use in high energy lasers.
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