SEDL / STP / STP1117-EB / STP26517S

Structural Modification of D²O/H²O-Dosed CaF² Optical Thin Films

Franck, JB
Naval Weapons Center, China Lake, California

Pages: 19    Published: Jan 1990

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Abstract

Unusual behavior has been reported for D²O/H²O-dosed CaF² optical thin films. This behavior includes resistance to laser-induced damage at 2.7-μm radiation, improved damage morphology, and reduced optical absorption in the water band for even H²O-dosed CaF² optical thin films. Analysis of the films strongly suggests that the modification of film properties is not the result of inclusion of the D²O/H²O into the film matrix or chemical contamination. Rather, the act of dosing has modified the structural properties of the films, thus producing the effects observed.