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Dichroic Short-Pass Filters

Photonics Spectra
Aug 2011
Edmund Optics Inc.Request Info
 
Edmund Optics’ TechSpec dichroic short-pass filters have broad transmission and reflection ranges and a sharp cutoff wavelength. Suitable for use as spectral beamsplitters, they are designed for a 45° angle of incidence. Light rejected by the filters is reflected at 90°, making them suitable for use in fluorescence applications. They feature low polarization dependence, offer broad spectral ranges and are made with a precision fused silica substrate. The filters are available in four common sizes for ease of integration into a wide variety of applications. They are supplied in 400- to 900-nm models with diameters of 12.5 mm, and in 400- to 800-nm models with rectangular dimensions of 12.5 x 17.6 mm.


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GLOSSARY
dichroic
Exhibiting the quality of dichroism.
fluorescence
The emission of light or other electromagnetic radiation of longer wavelengths by a substance as a result of the absorption of some other radiation of shorter wavelengths, provided the emission continues only as long as the stimulus producing it is maintained. In other words, fluorescence is the luminescence that persists for less than about 10-8 s after excitation.
fused silica
Glass consisting of almost pure silicon dioxide (SiO2). Also called vitreous silica. Frequently used in optical fibers and windows.
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