Special Application Coatings For The Vacuum Ultraviolet

Bruce K. Flint

doi:10.1117/12.956276

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26 September 1978 Special Application Coatings For The Vacuum Ultraviolet

Bruce K. Flint

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Proceedings Volume 0140, Optical Coatings: Applications and Utilization II; (1978) https://doi.org/10.1117/12.956276
Event: 1978 Technical Symposium East, 1978, Washington, D.C., United States

Abstract

Interest in vacuum ultraviolet optical coatings has increased in recent years, due to applications in space research, laser fusion, photochemistry, and analytical chemistry. A number of new high-efficiency coatings have been developed to satisfy the requirements of these applications. Materials limitations, more severe than those in the visible and IR, have limited broadband reflectors to 80-85% average reflectivity in the 1200-2000Å region. A new technology of multilayer dielectric coatings for the vacuum UV, beginning in 1973, has led to laser reflectors with reflectances as high as 95% at wavelengths as short as 1460A. Dichroic coatings with maximum reflectance in one spectral region, and high trans-mission in another, were developed for applications in UV pumping of longer-wavelength lasers, Raman shifting of UV laser lines, and generation of UV harmonics. Very narrowband interference filters, multi-layer dichroic reflective filters, and neutral density filters have been fabricated for rocket spectroscopy applications, as have high-efficiency UV AR coatings for lenses and laser optics. A summary of the current commercial UV coating technology and specific applications is presented,with graphs of reflectance and transmission versus wavelength. A description of measurement equipment and methods is given.

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Bruce K. Flint "Special Application Coatings For The Vacuum Ultraviolet", Proc. SPIE 0140, Optical Coatings: Applications and Utilization II, (26 September 1978); https://doi.org/10.1117/12.956276

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