Abstract

The optical performance of dichroic beam splitters developed for deuterium fluoride (DF) laser applications as shared-aperture components is presented. These components simultaneously provide high reflectance/transmittance in the 3.8-μm DF laser output band and high transmittance/reflectance in the long-wavelength 8–14-μm band. Optical evaluation of the reflecting dichroic yields absorption and transmission losses of <0.2 and 0.1%, respectively, at DF laser wavelengths and average transmittance 80% in the 8–14-μm band. The 3.8-μm transmitting dichroic yields absorptance losses of <0.4% in the DF laser band and average reflectance of >50% in the 8–14-μm region.

© 1980 Optical Society of America

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