Protected silver coating for astronomical mirrors

Details Protected silver coating for astronomical mirrors Protected silver coating for astronomical mirrors

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3352..580t&link_type=abstract

Proc. SPIE Vol. 3352, p. 580-586, Advanced Technology Optical/IR Telescopes VI, Larry M. Stepp; Ed.

Physics

1

Scientific paper

A durable protected silver coating was designed and fabricated for use on flashlamp reflectors in the National Ignition Facility to avoid tarnishing under corrosive conditions and intense visible light. This coating provides a valuable alternative for telescope mirror coatings where high reflectance and durability are important requirements. This paper describes a protected silver coating having high reflectance from 400 mm to 10,000 nm. An alternate coating design extends the high reflectance down to 300 nm while maintaining high reflectance out to 10,000 nm. The specular reflectance is between 95% and 97% in the visible region and 98% or better in the infrared region.

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