Antireflection coatings for spectrometers with large spectral ranges

Details Antireflection coatings for spectrometers with large spectral ranges Antireflection coatings for spectrometers with large spectral ranges

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2863..337b&link_type=abstract

Proc. SPIE Vol. 2863, p. 337-342, Current Developments in Optical Design and Engineering VI, Robert E. Fischer; Warren J. Smith;

Computer Science

Performance

Scientific paper

It is common for spectrometers to cover large spectral ranges with a single focal plane. It is difficult or impossible to strongly suppress reflections with a single coating stack. Abutting short and long wavelengths coatings is expensive, and the performance can still be insufficient. We discuss a novel structure that comprises a single layer whose thickness varies along the length of the dispersed spectrum. Such a coating has high performance, is inexpensive, and has large fabrication tolerances. We further report on measurements of the performance of one such optic. Extension of the concept are discussed.

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