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Proceedings Paper

Optical information storage in glasses with nonbridging oxygen center
Author(s): Victor I. Kopp; Alexei L. Diikov; A. K. Yakhkind; Igory V. Mochalov; Gury Timofeevic Petrovsky
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Paper Abstract

The possibility of optical information storage in sodium-tellurite glasses is demonstrated. The optical recording is based on the phenomena of the photoinduced second harmonic generation in glasses (PSHG). A microscopic model of this optical recording is suggested. The model is based on the analysis of optical transitions in nonbridging oxygen centers (NBO) (0.26 and 0.62 micrometers absorption bands and 0.65 micrometers photoluminescence band) in the frames of two-well adiabatic potential of NBO ground state. During simultaneous glass irradiation by YAG:Nd laser (1.06 micrometers ) and its second harmonic (0.53 micrometers ) the multiphoton 0.26 micrometers absorption in NBO band (under interference four- three- and two-photon processes) with subsequent photoluminescence leads to NBO moves from one stable position to another and to the recording macroscopic (Chi) (2)-grating.

Paper Details

Date Published: 7 December 1994
PDF: 9 pages
Proc. SPIE 2429, Optical Memory & Neural Networks '94: Optical Memory, (7 December 1994); doi: 10.1117/12.195583
Show Author Affiliations
Victor I. Kopp, S.I. Vavilov State Optical Institute (Russia)
Alexei L. Diikov, S.I. Vavilov State Optical Institute (Russia)
A. K. Yakhkind, S.I. Vavilov State Optical Institute (Russia)
Igory V. Mochalov, S.I. Vavilov State Optical Institute (Russia)
Gury Timofeevic Petrovsky, S.I. Vavilov State Optical Institute (Russia)


Published in SPIE Proceedings Vol. 2429:
Optical Memory & Neural Networks '94: Optical Memory
Andrei L. Mikaelian, Editor(s)

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