Virginia TechTsai, T. E.Jewell, J. M.Sanghera, J. S.2014-04-162014-04-161993-06-01Tsai, TE; Jewell, JM; Sanghera, JS, "Dynamics of the 5-EV optical-absorption in SIO2 glass," Appl. Phys. Lett. 62, 3396 (1993); http://dx.doi.org/10.1063/1.1090280003-6951http://hdl.handle.net/10919/47375The optical absorption at 5 eV in SiO2 glass was observed, using laser calorimetry, to change reversibly depending on the intensity of UV light. The generation and bleaching of an absorption band at 5 eV by two- and one-photon absorption processes, respectively, can explain these reversible changes. This observation supports the structural model of unrelaxed oxygen deficiency center for the 5 eV absorption band in silica.application/pdfenIn CopyrightSynthetic silica glassDefectsOxygenMechanismsBandsArticle - Refereedhttp://scitation.aip.org/content/aip/journal/apl/62/26/10.1063/1.109028https://doi.org/10.1063/1.109028