Serie XEP high extinction polarizers are an ideal option for maximizing performance and minimizing alignment requirements. Unlike Brewster angle polarizers which work at an angle of incidence of 56°, the XEP high extinction polarizer works at 45°. Consequently, the reflected and transmitted beams are separated by 90° and orthogonally polarized, just like a cube polarizer.

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High Extinction Thin Plate Polarizers 45° - XEP

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To be transformed

Serie PBSH: These broadband polarizing beamsplitter cubes are made from N-SF2 glass to improve broadband performance. For high-energy applications, CVI Melles Griot recommends other materials such as fused silica or N-BK7 glass, although they may not work as well over a wide wavelength range.

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Broadband Polarizing Cube Beamsplitters -PBSH

The DPL depolarizer consists of optically contacted 3° wedges of crystal quartz and fused silica. This inherently high damage threshold optic operates by imparting a variable phase shift across the beam aperture.

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Depolarizer DPL

Serie CLPA: The Glan-Laser prism polarizer is made of two calcite prisms which are assembled with an air space. This polarizer is a modification of the Glan Taylor type and is designed to have less reflection loss at the prism junction.

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Glan-Laser Linear Polarizer - CLPA

Serie CPBA Glan-Laser prisms suffer a small, unavoidable loss at the two internal calcite-air interfaces. This loss is avoided in the CPBA series polarizers by presenting the p-polarized transmitted beam to these interfaces at Brewster's angle. The result is a high-power, low-loss polarizer that does not need AR coating.

• No antireflection coatings needed
• Brewster angle incidence at all surfaces yields greater than 98% transmission efficiency
• Rejected beams available for beamsplitting/beam combining applications or safe dumping
• Damage Threshold:
• CW: 500 W/cm2 @ 1064 nm
• Pulsed: 1 J/cm2, 20 nsec, 20 Hz @ 1064 nm
• Extinction Ratio: 5×10^-5

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Glan-Brewster-Angle Air-Spaced Polarizers - CPBA

Serie CLPG & CPBS - Glan-Thompson polarizers have a large acceptance angle while maintaining a high extinction of the s-polarization component. In applications where both polarizations are required, use a CPBS Glan Thompson polarizing beamsplitter.

Glan-Thompson polarizers are used in fluorescence polarization, for optimizing specular reflection spectroscopy measurements, and to remove interference fringes from transmission spectra recorded at Brewster's angle.

• Substrate material: Calcite
• Extinction ration 5x10⁵:1
• Damage thresholds: 10mJ/cm², 8ns pulse; 10w/cm², CW at 1064nm typical
• Broadband low power polarizers BBAR coated for visible or Near IR wavelengths
• Acceptance Angle ±7° about normal

Polarizing Beamsplitters

• Substrate material: Calcite
  
• Extinction ration 5x10⁵:1
  
• Damage thresholds: 10mJ/cm², 8ns pulse; 10W/cm², CW at 1064nm typical
  
• Broadband low power polarizers beamsplitter
  
• BBAR coated for visible or Near IR wavelengths
  
• Reflectance beam deviated by 45° is always normal to exit surface and does not change angle with wavelength

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Glan-Thompson Polarizing Prisms 350-2300nm - CLPG

Serie PBSK is a High-Energy Broadband Polarizing Cube Beamsplitters an alternative to calcite and Brewster angle polarizers, the PBSK is an optimal solution for high-energy broadband or multiline systems.

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High Energy BroadbandPolarizing Beamsplitter -PBSK

The WLST calcite Wollaston prism polarizer comprises two prisms of calcite cemented together. The ordinary ray in the first half of the prism becomes the extraordinary ray in the second half, and vice versa.

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Wollaston Prism Polarizers 350–2300 nm -WLST

Serie FPG Dichroic sheet polarizers are used to subject either s- or p-polarization to strong absorption. CVI Melles Griot polarizers are made of a plastic dichroic polarizing sheet sandwiched between selected strain-free glass plates.

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Dichroic Sheet Polarizers 380-780nm-FPG

Serie PBS: Polarizing beamsplitter cubes are used to split a laser beam into two orthogonally polarized components; p-polarization is transmitted straight through while s-polarization is reflected at 90°. PBS polarizer cubes utilize a durable all-dielectric coating at the internal cemented interface, and all external surfaces are antireflection coated for the wavelength specified.

• Improved 1000:1 extinction ration
• Damage Threshold:
• cw: 100 W/cm2 @ 515 nm
• Pulsed: 1 J/cm2, 20 ns, 20 Hz @ 1064 nm
• Projection systems, signal monitoring, color separation and recombination, optical coupling
• Fewer ghost images than plate beamsplitters
• Optical isolation (in combination with waveplate)
• Continuously variable beamsplitter (In combination with waveplate)

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Laser Line Polarizing Cube Beamsplitters PBS

Serie RCHP- Rochon prisms are used in applications where good polarization selectivity is required across a large range of wavelengths. In a Rochon prism, both polarization components are transmitted.

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Rochon Prism Polarizers - RCHP

TFPN thin-film plate polarizers are an ideal choice when both high laser damage threshold and a 90-degree reflection angle are necessary. Unlike Brewster angle polarizers which work at an angle of incidence of 56°, the TFPN plate polarizer works at 45°. Consequently, the reflected and transmitted beams are separated by 90° and orthogonally polarized, just like a cube polarizer.

This makes them ideal for use as either a polarizing beamsplitter or beam combiner.

• High-energy laser line polarizer
• Reflected and transmitted beams separated by 90°
• No angle tuning required
• Larger clear aperture than Brewster plate polarizers
• Damage Threshold:
• cw: 1 MW/cm2 @ 1064 nm
• Pulsed: 10 J/cm2, 20 nsec, 20 Hz @ 1064 nm
• Extinction Ratio (Tp/Ts) : 500:1

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Thin-Film Plate Polarizers 45º -TFPN

Serie UPBS: UV polarizing cube beamsplitters are made from UV grade fused silica to improve UV performance.

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UV Laser-Line Polarizing Cube Beamsplitters UPBS

Polarization Tutorial

Polarization States

• Cartesian representation
  
• Circular representation
  
• Elliptcial representation
  
  

Linear Polarizer Waveplates

• Linear birefringence
  
• Multiple order
  
• Zero order
  
• Achromatic waveplates
  
• Dual Waveplates
  
• Low order
  
• Savart plates
  
• Soleil Babinet compensator

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Polarization Tutorial