Brewster Type Thin film polarizers
|Diameter/dimensional tolerances||+0/-0.1 mm|
|Thickness tolerance||±0.1 mm|
|Clear aperture||>90 %|
|Surface quality||20-10 S-D|
|Transmitted wavefront distortion (TWD)||<λ/10 @ 632.8 nm|
|Parallelism error||<30 arcsec|
|Extinction ratio Tp/Ts||>200:1|
|Typical transmission||Tp > 95%|
|Typical reflection||Rs > 99.5%|
|Angle of incidence||Brewster angle|
|Laser damage threshold reports||www.altechna.com/lidt|
They have high damage threshold reaching 10 J/cm² @ 1064 nm for 8 ns. Brewster polarizers are used as an alternative to Glan-Taylor laser polarizing prisms or cube polarizing beamsplitters.
Typically, BK7 or UVFS dielectric coated Brewster Type Thin film polarizers separate the s- and p-polarization components of high energy laser beams and are intended for intra and extra cavity usage.
Typical polarization ratio Tp/Ts is 200:1 and it is achieved at 56 ° AOI (Brewster angle). For optimal transmission Brewster Type Thin Film Polarizer should be mounted in an appropriate holder for angular adjustment.
Dual band or other dimensions thin film polarizers are available by request.
|Efficiently separates the s- and p- polarization components|
|Optimised for popular laser wavelengths|
|Many Brewster Thin Film polarizers are available from STOCK with Fast delivery!|
Polymer film First Contact™ is a unique product designed for laser optics protection, preservation and cleaning. For all sorts of optical items it serves as a protection layer from damages during shipping, long term storage, environment changes, etc. and removes all dust and other contamination after the film is removed from the optical surface. It is absolutely safe for almost all types of optics and optical coatings.*
- Protects against scratching, abrasion, dirt, and water damage. Also protects against corrosion caused by water vapor, oxygen, and sulfur.
- Cleans the surface, removes particulates and organic contaminants.
- Leaves no residue.
- Leaves no hazardous waste.
- Safe to store for up to 4 years (period may be extended depending on storing conditions).
- Comes off in one piece.
- Does not lift metal from metal films.
- Safe with temperatures up to 200° C.
- Environmentally friendly
* Protective polymer cannot be used with optical components sensitive to acetate.
Price – 3 EUR per item (price includes coating service and polymer)
If you want to order protective coating please select "Optics Protection" in the catalog list.
Holding the sticker slowly peel the film starting from the edge. If necessary place the optic in its corresponding mount prior to removing the film.