The basic principle of optical beamsplitting prisms is rooted in the law of refraction of light. When a beam of light is incident on the surface of a prism, the direction of propagation of the light changes due to the difference in refractive index between the prism material and the surrounding medium. The subtlety of a beam-splitting prism is that it can break down composite light into different colors (i.e., different wavelengths) according to the differences in the refraction process of light of different wavelengths, as if splitting a colorful band of light into a single monochromatic filament.

Cube Beamsplitters Prism
*Designed for Common Diode, Gas, and Solid State Lasers
*Reflects S-Polarized Light, Transmits P-Polarized Light
*High Extinction Ratio
Designed for many common laser wavelengths, Laser Line Polarizing Cube Beamsplitters split randomly polarized beams into two orthogonal, linearly polarized components. S-polarized light is reflected at a 90° angle, while P-polarized light is transmitted. Each beamsplitter consists of a pair of precision right angle prisms cemented together to minimize transmitted wavefront distortion, and to provide excellent parallelism between incoming and transmitted beams.