Ultraviolet laser-induced single- and two-quantum photochemistry of oxygen-deficient centers in silica glasses

Details Ultraviolet laser-induced single- and two-quantum photochemistry of oxygen-deficient centers in silica glasses Ultraviolet laser-induced single- and two-quantum photochemistry of oxygen-deficient centers in silica glasses

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1856...69b&link_type=abstract

Proc. SPIE Vol. 1856, p. 69-80, Laser Radiation Photophysics, Bodil Braren; Michail N. Libenson; Eds.

Physics

Scientific paper

The mechanisms of UV induced decomposition of oxygen-deficient centers (ODC) in silica glass has been experimentally studied. It is shown that high intensity irradiation of silica glass results in the two-step decomposition of ODC and formation of paramagnetic E' centers. At the same time at low UV irradiation intensity (laser, mercury lamp) the single quantum reaction of ODC with gas-phase impurities in the net of silica is the dominant process of ODC photoreaction.

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