Optical cube beam-splitter
Optosigma Corporation
* Four wide wavelength regions for complete coverage of visible and near-IR
* Cube faces AR coated to prevent ghosts
* Standard cubes from 5 to 30mm
* All coatings are multilayer dielectric
* 5mm beamsplitter cubes available for fiber optic applications
These superior broadband beamsplitters use multilayer dielectric films to produce approximately equal reflectance and transmittance over a broad range of wavelengths. Three different wavelength ranges are offered covering the visible and near infra-red spectrum.
The beamsplitting film is deposited on the hypotenuse face of a precision BK7 prism whose faces are λ/4 and the prism is cemented to an identical prism to form a cube which is parallel sided within 5arcmin. The four outer faces are all Anti-Reflection (AR) coated.
