BREWSTER WINDOWS

Brewster Windows are primarily used in laser cavities to produce a beam with a high degree of polarization purity. When unpolarized light is incident on an uncoated substrate at Brewster’s Angle, the reflected portion is completely S polarized and the transmitted portion is partially P polarized.
Multiple passes through the substrate Substantially reduce the S component in the transmitted beam, resulting in a highly P polarized output. multi-layer thin Film Polarizer coatings can be applied to these substrates to greatly improve efficiency and extinction ratio on a single pass through the substrate.

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LARGE WEDGE WINDOWS

Large Wedge Windows greatly reduce or eliminate interference effects caused by multiple reflections between the front and rear surfaces of plane windows. They are well suited for use as substrates for laser output couplers in which the reflection from the second surface must be completely eliminated from the gain medium of very sensitive lasers. A pair of identical wedges are used to create an adjustable beam steering device.

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PARALLEL WINDOWS

Parallel Windows are similar to Plane Windows, but with parallel surfaces. These windows are well suited for applications in which angular deviation of the transmitted beam must be kept as small as possible.
Misalignment errors are also minimized when the window is repeatedly inserted and removed.

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PLANE WINDOWS (CONT.) UV / VIS / NIR

UV / VIS / NIR

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PLANE WINDOWS

Plane Windows are used as substrates for a variety of applications, such as laser window, output couplers, beamsplitters, beam combiners, mirrors, dichroic filters, and plate polarizers. Considerations in selecting window substrates include transmission range, absorption coefficient, incident laser power density and environmental factors such as pressure, temperature, moisture, abrasion and corrosion. Plane Windows listed under UV / VIS / NIR substrates are specified for applications involving coating wavelengths 193nm ≤ λ〈2.0 μm. Units for these substrates are given in mm. Plane Windows listed under IR substrates are specified for applications involving coating wavelengths λ≥ 2.0 μm. Units for these substrates are given in inches.
Refer to the THIN FILM COATINGS section for information on coatings that can be applied to these substrates.

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PLANE WINDOWS

Plane Windows are used as substrates for a variety of applications, such as laser window, output couplers, beamsplitters, beam combiners, mirrors, dichroic filters and plate polarizers. Considerations in selecting window substrates include transmission range, absorption coefficient, incident laser power density and environmental factors such as pressure, temperature, moisture, abrasion and corrosion. Plane Windows listed under UV / VIS / NIR substrates are specified for applications involving coating wavelengths 193nm ≤ λ〈2.0 μm. Units for these substrates are given in mm. Plane Windows listed under IR substrates are specified for applications involving coating wavelengths λ≥ 2.0 μm. Units for these substrates are given in inches.
Refer to the THIN FILM COATINGS section for information on coatings that can be applied to these substrates.

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