Optical information storage in glasses with nonbridging oxygen center

Victor I. Kopp; Alexei L. Diikov; A. K. Yakhkind; Igory V. Mochalov; Gury Timofeevic Petrovsky

doi:10.1117/12.195583

7 December 1994 Optical information storage in glasses with nonbridging oxygen center

Victor I. Kopp, Alexei L. Diikov, A. K. Yakhkind, Igory V. Mochalov, Gury Timofeevic Petrovsky

Proceedings Volume 2429, Optical Memory & Neural Networks '94: Optical Memory; (1994) https://doi.org/10.1117/12.195583
Event: Optical Memory and Neural Networks: International Conference, 1994, Moscow, Russian Federation

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.

Citation Download Citation

Victor I. Kopp, Alexei L. Diikov, A. K. Yakhkind, Igory V. Mochalov, and Gury Timofeevic Petrovsky "Optical information storage in glasses with nonbridging oxygen center", Proc. SPIE 2429, Optical Memory & Neural Networks '94: Optical Memory, (7 December 1994); https://doi.org/10.1117/12.195583

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