Plane Windows
Plane windows are used as substrates for a variety of applications, such as laser windows, excimer windows, 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.
Read More...
|
|
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.
Read More...
|
Large Wedge Windows
Large Wedge Windows greatly reduce or eliminate interference effects caused by multiple reflections between 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.
Read More...
|
Brewster Windows
Brewster windows are windows designed for use at Brewster's angle (usually uncoated). This is the angle where only incident p-polarized light has 0% transmission loss. They are and economical option for coupling linearly polarized light into sealed optical systems and to select the polarization of light traveling in optical cavities.
Read More...
|
IR 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 reduces 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.
Read More...
|
|
|
|
|
|
