Fluoride damage to substrates during stripping of mirrors

Andrew C. Phillips; Brian DuPraw; David Hilyard; Donald Gavel; Daren Dillon; Renate Kupke

doi:10.1117/12.2056887

28 July 2014 Fluoride damage to substrates during stripping of mirrors

Andrew C. Phillips, Brian DuPraw, David Hilyard, Donald Gavel, Daren Dillon, Renate Kupke

Proceedings Volume 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation; 91515I (2014) https://doi.org/10.1117/12.2056887
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

Fluorides are useful low-index materials that can be used to enhance reflectivity of over-coated metallic films. In particular, YF3 has been suggested as a useful low-stress low-index material in the IR where film layers must be thicker, and it has also been found to enhance durability in silver-based mirrors. However, if these mirrors need to be stripped for recoating, care must be taken with the stripping process to avoid damaging a silica-based substrate through production of hydrofluoric acid. We present data that such damage can occur, and discuss empirically-derived alternative stripping processes in place of the normal acid-based approach to mitigate the danger.

Citation Download Citation

Andrew C. Phillips, Brian DuPraw, David Hilyard, Donald Gavel, Daren Dillon, and Renate Kupke "Fluoride damage to substrates during stripping of mirrors", Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 91515I (28 July 2014); https://doi.org/10.1117/12.2056887

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available