Accession Number : ADP006450

Title :   Densification of Sol-Gel Silica Glass By Laser Irradiation,

Corporate Author : MANCHESTER UNIV (UNITED KINGDOM)

Personal Author(s) : Shaw, D. J. ; King, T. A.

Report Date : MAR 1992

Pagination or Media Count : 11

Abstract : The results of studies into the interaction between sol-gel prepared silica and 10.6 micon wavelength laser radiation are presented. Hardening of the silica has been measured up to the value for fused silica. The lower densification and upper damage (bloating) thresholds were measured as 4.3 +/0. 2 and 6.3 +/- 0.3 J cm -2 of surf ace irradiated. A reflectivity refractometer has been developed to measure the refractive index of sol-gel surfaces and inconsistencies in the surface were detected resulting in variations in point-to-point measurements.

Descriptors :   *OPTICS, DAMAGE, FUSED SILICA, GELS, HARDENING, INDEXES, INTERACTIONS, LASERS, RADIATION, REFLECTIVITY, REFRACTIVE INDEX, REFRACTOMETERS, SURF, SURFACES, VALUE.

Subject Categories : Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE