Optical Polarizers

WISOPTIC Advantages of Optical Polarizers

Wide variety of linear polarizers over UV, Visible and IR spectral ranges.

Linear polarizers include laminated polymer film, laminated sheet, Polarcor dichroic glass, and Calcite crystal types.

Antireflective coating (improve transmission, reduce glare, and readability).

Pigtail (a polarization rotator which has a short length of optical fiber permanently fixed to a component).

Broadband connections (has a uniform optical characteristics over a wide area of the spectrum in the polarization rotator).

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Product Details

Polarization is an important characteristic of light. Polarizers are key optical elements for controlling your polarization, transmitting a desired polarization state while reflecting, absorbing or deviating the rest. There is a wide variety of polarizer designs, each with its own advantages and disadvantages.


Polarizer

Material

Illustration

Properties & Application

Glan-Taylor

Polarizer

α-BBO(190-3500)

Calcite(350-2300)

YVO4(450-5000)

Polarizer

Air-spaced.

Cutting angle close to Brewster ±s Angle.

The extraordinary ray passes through straightly with little deviation.

Sealed mount without escape windows. Suits for low to medium power application where the rejected beam is not required.

Glan- Laser
Polarizer

α-BBO(190-3500)

Calcite(350-2300)

Polarizer

Better than Glan Taylor polarizer.

Mounted with escape windows. Suits for high power application.

Glan-Thompson
Polarizer

Calcite(350-2300)

Polarizer

Cemented.

Suits for low power application.

Special design for ratio of L/A (length/aperture) guarantees wide acceptance angle.

Wollastom
Polarizer

Calcite(350-2300)

Polarizer

Cemented.

Both ordinary and extraordinary beams are deviated.

Suits for low power application and where large deviation is required.

Rochon
Prism

α-BBO

Polarizer

Broad wavelength range.
High UV transmission.n
High extinction ratio.
Large field angle.


Comparison of Different Materials of Polarizers


YVO4

Calcite

α-BBO

Quartz

Transparency Band

500-4000 nm

350-2300 nm

220-3000 nm

200-2300 nm

Crystal Type (uniaxial)

Positive
no=na=nb, ne=nc

Negative
no=na=nb, ne=nc

Negative
no=na=nb, ne=nc

Positive
no=na=nb, ne=nc

Mohs Hardness

5

3

4.5

7

Thermal Expansion Coefficient

aa=4.43x10-6/K
ac=11.37x10-6/K

aa=24.39x10-6/K
ac=5.68x10-6/K

aa=4x10-6/K
ac=36x10-6/K

aa=6.2x10-6/K
ac=10.7x10-6/K




Optical Polarizers.jpg



Optical Polarizers.jpg


Optical Polarizers.jpg


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