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Ion assisted deposition of optical and protective coatings for heavy metal fluoride glass

Journal Article · · Appl. Opt.; (United States)
DOI:https://doi.org/10.1364/AO.25.001973· OSTI ID:5571957
Heavy metal fluoride glass materials are attractive for optical applications in the near UV through IR wavelength regions. However, many compositions are relatively soft and hygroscopic and possess low softening temperature (250--300/sup 0/C). We have applied ion assisted deposition (IAD) techniques to deposit MgF/sub 2/, SiO/sub 2/, and Al/sub 2/O/sub 3//SiO/sub 2/ thin film structures on fluoride glass substrates at ambient substrate temperature (--100/sup 0/C). The coatings deposited using IAD improve the environmental durability of the fluoride glass and appear to have reasonably good optical characteristics; without application of IAD, the deposited coatings are not durable and have poor adhesion.
Research Organization:
BDM Corporation, Albuquerque, New Mexico 87106
OSTI ID:
5571957
Journal Information:
Appl. Opt.; (United States), Journal Name: Appl. Opt.; (United States) Vol. 25:12; ISSN APOPA
Country of Publication:
United States
Language:
English