Decay of ultraviolet-induced optical absorption in Ge-doped SiO2 glass

Motoshi Ohama; Takumi Fujiwara; Akira J. Ikushima

doi:10.1063/1.122179

Decay of ultraviolet-induced optical absorption in Ge-doped SiO₂ glass

Motoshi Ohama, Takumi Fujiwara, Akira J. Ikushima

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We report quantitative measurements on the decay of optical absorption at various elevated temperatures in ultraviolet (UV)-irradiated SiO₂ glasses doped with Ge. From the Arrhenius plots of decay time constants, the activation energy of the GeE^′ center in the UV-irradiated glasses has been determined to be 2.4±0.3eV, while the reported activation energy of GeE^′ decay in UV-poled glasses is 0.4±0.1eV. The present experimental results strongly suggest that the decay process of the GeE^′ center induced in UV-irradiated glasses is quite different from that in UV-poled glasses.

Original language	English
Pages (from-to)	1481-1483
Number of pages	3
Journal	Applied Physics Letters
Volume	73
Issue number	11
DOIs	https://doi.org/10.1063/1.122179
Publication status	Published - 1998 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "We report quantitative measurements on the decay of optical absorption at various elevated temperatures in ultraviolet (UV)-irradiated SiO2 glasses doped with Ge. From the Arrhenius plots of decay time constants, the activation energy of the GeE′ center in the UV-irradiated glasses has been determined to be 2.4±0.3eV, while the reported activation energy of GeE′ decay in UV-poled glasses is 0.4±0.1eV. The present experimental results strongly suggest that the decay process of the GeE′ center induced in UV-irradiated glasses is quite different from that in UV-poled glasses.",

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AU - Ohama, Motoshi

AU - Fujiwara, Takumi

AU - Ikushima, Akira J.

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N2 - We report quantitative measurements on the decay of optical absorption at various elevated temperatures in ultraviolet (UV)-irradiated SiO2 glasses doped with Ge. From the Arrhenius plots of decay time constants, the activation energy of the GeE′ center in the UV-irradiated glasses has been determined to be 2.4±0.3eV, while the reported activation energy of GeE′ decay in UV-poled glasses is 0.4±0.1eV. The present experimental results strongly suggest that the decay process of the GeE′ center induced in UV-irradiated glasses is quite different from that in UV-poled glasses.

AB - We report quantitative measurements on the decay of optical absorption at various elevated temperatures in ultraviolet (UV)-irradiated SiO2 glasses doped with Ge. From the Arrhenius plots of decay time constants, the activation energy of the GeE′ center in the UV-irradiated glasses has been determined to be 2.4±0.3eV, while the reported activation energy of GeE′ decay in UV-poled glasses is 0.4±0.1eV. The present experimental results strongly suggest that the decay process of the GeE′ center induced in UV-irradiated glasses is quite different from that in UV-poled glasses.

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