The LBTEK High-Power Laser Line Polarizing Beamsplitter Cube is composed of two UV fused silica right-angle prisms. One prism has an anti-reflection coating on its hypotenuse face, while the other has a precision polished hypotenuse face. Both right-angle faces of the prisms are coated with anti-reflection coatings, and the hypotenuse surfaces are bonded together using the optical contact process. The prism marked with a black dot on top indicates that its hypotenuse face is coated with a dielectric polarizing beamsplitter coating, which reflects S-polarized light and transmits P-polarized light. Any of the four sides of the cube can serve as the incident surface to separate P- polarized and S-polarized light. For optimal polarization performance, it is recommended to have the incident light enter through the right-angle side of the prism coated with the polarizing beamsplitter coating. The extinction ratio (Tp:Ts) of the high-power laser line polarizing beamsplitter cube is greater than 2000:1. All four light-transmitting surfaces are coated with V-type anti-reflection coatings designed for a single wavelength, with a reflectance of less than 0.25%. LBTEK offers various operating wavelengths ranging from 266 nm to 1550 nm. Custom designs for other wavelengths and sizes are also available. For customization needs, please contact the technical support.