• Glan Thompson Polarizer Beamsplitter Cube

    Glan Thompson Polarizer Beamsplitter Cube

    Glan Thompson polarizer Beamsplitter Cube is made of two Calcite prisms or two a-BBO prisms cemented together .It have high extinction ratio below 5×10-5 is botained. The Calcite type can be used in the range of 350-2300nm,and a-BBO crystal usable in the range of 220-900nm. It can separate the nature light for O polarized light and E polarized light,and the separate angle is 45°. Since there are two ports,the prism can also be used by replacing the input and output direction.

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  • Glan Thompson Polarizer

    Glan Thompson Polarizer

    Glan Thompson polarizer is made of two calcite prisms or two a-BBO prisms cemented together . Two types of Glan Thompsons are available .One is the standard form and the other is the long form.Their length to aperture ratios 2.5:1 and 3.0:1 respectively.Glan Thompson polarizers tend to have higher extinction ratio than air spaced polarizers .In the ultra violet spectrum,their transmission is limited by absorption in birefriengent materials as well as the cement layer.a-BBO polarizers and Calcite polarizers can be used from about 220 to 900nm and 350 to 2300nm respectively.

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  • High Power Glan Laser Polarizer

    High Power Glan Laser Polarizer

    Glan Laser polarizer is made of two same birefringent material prisms that are assembled with an air space.The polarizer is a modification of the Glan Taylor type and is designed to have less reflection loss at the prism junction.The polarizer with two escape windows allows the rejected beam to escape out of the polarizer,which makes it more desirable for high energy lasers.The surface quality of these faces is relatively poor compare to that of entrance and exit faces .No scratch and dig surface quality specifications are assigned to these faces.The polarizer field F1 and F2 of these is shown in the plot below.

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  • Glan Taylor Polarizer

    Glan Taylor Polarizer

    Glan Taylor polarizer is made of two same birefringent material prisms that are assembled with an air space.Its length to aperture ratio which is less than 1.0 makes it a relatively thin polarizer.The polarizer with no side escape windows is suitable for low to medium power application where the side rejected beams are not required .The angular field of different materials of polarizers is listed below for comparison.

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Polarizer Beam Splitter Optical Window Laser Mirror Optical Crystal Birefringent Crystal