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Title: Effects of vacuum exposure on stress and spectral shift of high reflective coatings

Journal Article · · Applied Optics; (United States)
DOI:https://doi.org/10.1364/AO.32.005666· OSTI ID:6036719
; ; ;  [1]
  1. Lawrence Livermore National Laboratory, University of California, L-463, P.O. Box 808, Livermore, California 94550 (United States)

Coating stress and spectral shift are affected by changing from ambient to vacuum environments. This change can affect optical systems that are aligned in air and used in a vacuum or in a dry environment. Spectral shifts up to 3% and reflected wave-front changes up to 0.35 waves peak to valley are reported for conventional electron-beam deposition and ion-assisted deposition. Alternatively, ion-beam sputtered coatings have virtually no changes between different pressure environments.

DOE Contract Number:
W-7405-ENG-48
OSTI ID:
6036719
Journal Information:
Applied Optics; (United States), Vol. 32:28; ISSN 0003-6935
Country of Publication:
United States
Language:
English