Title

Nonlinear photosensitivity of photo-thermo-refractive glass by high intensity laser irradiation

Authors

Authors

L. A. Siiman; J. Lumeau;L. B. Glebov

Comments

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Abbreviated Journal Title

J. Non-Cryst. Solids

Keywords

laser-matter interactions; lasers; non-linear optics; photoinduced; effects; ultrafast processes and measurements; oxide glasses; SILICATE-GLASSES; PHOTOTHERMOREFRACTIVE GLASS; Materials Science, Ceramics; Materials Science, Multidisciplinary

Abstract

Photo-thermo-refractive (PTR) glass is a material for high-efficiency phase volume hologram recording which possesses linear photosensitivity in the near UV region from 280 to 350 nm. In this paper nonlinear photosensitivity by 355 nm nanosecond pulses with intensity exceeding 1 MW/cm(2) and by 783 nm femtosecond pulses with intensity exceeding 1 TW/cm(2) is demonstrated. No photo-sensitizers are necessary in PTR glass for nonlinear photosensitivity. Photosensitivity by 355 nm nanosecond pulses is determined by glass matrix ionization resulting from two-photon absorption of incident radiation by glass matrix. Photosensitivity by 783 nm femtosecond pulses is determined by glass matrix ionization from nonlinear interaction of fundamental radiation and supercontinuum with modified glass matrix due to strong electric fields of incident radiation. (C) 2008 Elsevier B.V. All rights reserved.

Journal Title

Journal of Non-Crystalline Solids

Volume

354

Issue/Number

34

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

4070

Last Page

4074

WOS Identifier

WOS:000259621800007

ISSN

0022-3093

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