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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 24, Iss. 11 — Jun. 1, 1999
  • pp: 729–731

Photochemical reaction of hydrogen with germanosilicate glass initiated by 3.4 5.4-eV ultraviolet light

V. Grubsky, D. S. Starodubov, and J. Feinberg  »View Author Affiliations


Optics Letters, Vol. 24, Issue 11, pp. 729-731 (1999)
http://dx.doi.org/10.1364/OL.24.000729


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Abstract

By measuring the photosensitivity of Ge-doped silica fibers over the 3.4–5.4-eV spectral range and from T=95 K to T=375 K , we demonstrate that different physical mechanisms take place depending on whether H2 is present. Without H2 the principal photosensitivity pathway involves excitation of a germanium oxygen-deficient center to its triplet state. In H2 -loaded fibers the UV light excites the regular Ge—O bond, which then reacts with H2 to produce Si—OH or Ge—OH and a GeE center.

© 1999 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(060.2290) Fiber optics and optical communications : Fiber materials
(060.2400) Fiber optics and optical communications : Fiber properties

Citation
V. Grubsky, D. S. Starodubov, and J. Feinberg, "Photochemical reaction of hydrogen with germanosilicate glass initiated by 3.4 5.4-eV ultraviolet light," Opt. Lett. 24, 729-731 (1999)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-24-11-729

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