"; _cf_contextpath=""; _cf_ajaxscriptsrc="/cfthorscripts/ajax"; _cf_jsonprefix='//'; _cf_websocket_port=8578; _cf_flash_policy_port=1244; _cf_clientid='2D02F220D24F7CDDF83BB19F1755B0DC';/* ]]> */
| |||||||||||||||||||||||||||||||||||||||||||||||||||
Brewster Window Optic Mounts![]()
Application Idea BW16M with SM1P1 Adapter BW16M Compatible with BW08M2 Compatible with BW25M Compatible with Internally ![]() Please Wait ![]() Click to Enlarge BW2502 Brewster Window in Our BW25M Mount with a KS1RS Kinematic Rotation Mount (No Adapter Necessary) ![]() Click to Enlarge BW1602 Brewster Window in Our BW16M Mount with an SM1P1 Thread Adapter and KS1RS Kinematic Rotation Mount ![]() Click to Enlarge BW0802 Brewster Window in Our BW08M2 Mount with an SM05P05 Thread Adapter and KS05RS Kinematic Rotation Mount Features
Thorlabs' Brewster Window Optic Mounts provide a stable and convenient mounting solution for our line of UV fused silica Brewster windows. These mounts are engineered with a 55° 32’ mounting angle (Brewster’s Angle at 633 nm) that allows for the transmission of p-polarized light while reflecting s-polarized light. To accommodate other wavelengths, these mounts can be attached to a kinematic mount. Our kinematic rotation mounts are particularly well suited for our Brewster windows as they provide adjustment for the reflected beam; please see the table below for compatible kinematic rotation mounts. For information concerning Brewster's angle at other wavelengths, please see the Brewster Window tab. We offer mounting options for 8 mm (1 or 2 mm thick optic), 13 mm (2 mm thick optic), 16 mm (2 mm thick optic), 20 mm (2 mm thick optic), and 25 mm (2 mm thick optic) minor-axis-length Brewster windows (see the table below for further information). An exit port is provided for the reflected s-polarized light so that the mount may be used in either direction. The Brewster windows are held in place using a steel flexure retention plate and three locking screws. For the BW08M1 and BW08M2, these locking screws require a 0.035" hex key. For the BW13M, BW16M, BW20M, and BW25M, these locking screws require a 0.05" hex key.
Brewster Window Optic Mounts![]() The image above shows the reflection of s-polarized light and transmission of p-polarized light through a Brewster window. Some s-polarized light will be transmitted through the window. Brewster WindowsBrewster Windows are uncoated substrates that are used as polarizers, typically within a laser cavity. When positioned at Brewster's Angle (55° 32' at 633 nm), the p-polarized portion of the light will pass through the window with no losses, while a fraction of the s-polarized portion will be reflected off the Brewster window. When used in a laser cavity, the Brewster window acts essentially as a polarizer. Brewster's angle is given by ![]() θB is Brewster's angle. It should be noted that the index of refraction is wavelength dependent. For fused silica, the index of refraction can be expressed as ![]() Please note that that the wavelength needs to be in microns when using the formula above.
| |||||||||||||||||||||||||||||||||||||||||||||||||||
|