Polarizing Optics | EKSMA Optics
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Polarizing Optics valuable information about where the light has been and the various physical parameters which have been acting upon it. This section describes a group of components which modify the state of polarization of optical radiation. Polarized light carries Brewster Windows ● Transmit 100% p-polarization components ● Reflect 20% s-polarization components Windows & Filters Polarizing Optics Brewster windows are intended for high energy laser beams intra cavity usage. Wavefront distortion Clear aperture Axis tolerance Thickness tolerance ● Provide the achievement of strictly linear polarization of laser radiaton ● Utilise the polarization wich occurs on reflection from a plane surface Diameter tolerance Thickness tolerance Clear aperture Surface flatness Material Surface quality Brewster angle 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. Transmission, % Percent transmission 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 wave­ength range at 56° AOI (Brewster l angle). Typical polarization ratio TP/TS is 200:1. Thin Film Laser Polarizers Visit www.eksmaoptics.com for new products and prices Polarizing Optics Catalogue number Extinction ratio Tp/Ts Laser damage threshold Please contact us for other Brewster windows size or precision requirements. Surface quality 10 J/cm2 10 nsec pulse at 1064 nm typical

Optical Components BK7 Round Thin Film Polarizers UV FS Round Thin Film Laser Polarizers Catalogue number Catalogue number Please add letter M to the catalogue number for metric dimensions and letter E for English. BK7 Rectangular Thin Film Laser Polarizers Rs / Tp > 99.5 / 95.0 % Catalogue Rectangular dimensions Thickness Wavelength, Price, number Length, mm Width, mm T, mm nm EUR 28.6 Please add letter M to the catalogue number for metric dimensions and letter E for English. UV FS Rectangular Thin Film Laser Polarizers Rs / Tp > 99.5 / 95.0 % Catalogue Rectangular dimensions Thickness...

Polarizing Optics Ultra High Transmission Thin Film Polarizers 420-1254UHT. Ultra High Transmission @ 532 nm, Ts<0.2%, Rp<0.2%, AOI = 56° 420-1258UHT. Ultra High Transmission @ 1064 nm, Ts<0.2%, Rp<0.2%, AOI = 56° High Transmission Thin Film Polarizers 420-1248HT. High Transmission @ 1030 nm, Rs/Tp > 99.5/99.0% 420-1258HT. High Transmission @ 1064 nm, Rs/Tp > 99.5/99.0%. Wollaston Prisms See page 1.50 Catalogue number Polarizing Optics Visit www.eksmaoptics.com for new products and prices Glan Laser Polarizing Prims 420-1254HT. High Transmission @ 532 nm, Rs/Tp > 99.5/99.0% 420-1252HT. High...

Optical Components Cube Polarizing Beamsplitters Coatings The four outer faces are all anti-reflection coated. ● Durable and convenient ● Optimised for popular laser wavelengths Polarizing film is coated on the internal face of a cube beamsplitter. Thin film polarizers utilize the polarization which occurs on reflection deviated by 90º angle. Cube polarizing beamsplitters can be optimized for a particular wavelength to give superior performance for laser application can be optimised for a particular wavelength to give superior performance for laser applications. Please contact us for...

Polarizing Optics Glan Laser Polarizing Prisms ● Transmit a linearly polarized extraordinary beam without deviation from its initial direction ● Reflect an ordinary ray out of the prism into either the black glass or the escape port ● Air-spaced prisms ● Available with two, one or no escape ports in mounts for extra power capacity Glan laser polarizers are manufactured from the finest optical grade natural calcite or α-BBO. They are useful in applications requiring a high degree of polarization purity, high total transmission and low, medium or high power requirements. Windows & Filters We...

Optical Components α-BBO Glan Laser Prisms SPECIFICATIONS Coatings Transmittance wavelength range Extinction ratio Surface quality Wavefront distortion Beam deviation Angular field Black anodized aluminium Operating wavelength range, nm Catalogue number Mounted, without adapter Price, EUR Catalogue number Mounted, with adapter Mounting Suggestion Example of M2Pd mount with adapter for α-BBO Glan Laser Prisms with outer diameter mount of 25.4 mm. Solid Base Height Extenders 820-0210 Polarizing Optics UV & IR Optics Polarizer Holders 840-0180-A1 for prisms with outer diameter of 25.4 mm and...

Polarizing Optics Specifications Material Surface quality Dimension tolerance For mount's drawing and mounting suggestion, see page 1.48. Prisms mounted in black aluminium mounts M2P or M2Ps are available. Catalogue number Other sizes, better quality, different spectral ranges or AR coatings are available on request. To order wollaston prism with a AR coating (see page 1.5) add the catalogue number and coating price to the prism code and price. Wollaston prism polarizers consist of two equal calcite prisms. Both output beams are almost equaly deviated. Angular separation of output beams...

Optical Components Quartz Retardation plates Coatings They rotate the direction of polarization (λ/2) or convert linear into circular polarization or vice versa (λ/4). ● Made from high quality optical grade crystalline quartz ● Quarter wave and half wave retardation versions available ● Multiple-order, low-order or zero-order plates ● Suitable for high and low power laser applications Zero Order Optically Contacted Waveplates ● Easily aligned ● Temperature insensitive ● Moderately insensitive to wavelength These are formed from two thin sections which are polished to different thicknesses...