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Optical properties of silica glasses having O2 and Cl2 molecules

Published online by Cambridge University Press:  15 February 2011

Koichi Awazu ,
Hiroshi Kawazoe  and
Ken-ichi Muta
Koichi Awazu
Affiliation:
Electrotechnical laboratory, Umezono 1-1-4, Tsukuba 305, Japan
Hiroshi Kawazoe
Affiliation:
Research Laboratory of Engineering Materials, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama 227, Japan
Ken-ichi Muta
Affiliation:
Showa Wire & Cable Co., Ltd.Minami-Hashimoto, Sagamihara 229, Japan
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Abstract

Oxygen or chlorine was incorporated into silica glasses by sintering porous soot rods under 02/He or C12/He atmosphere. In case of oxygen, the Schumann-Runge band of 02 molecule was found in VUV region. An absorption band at 4. 8eV having 1. 9eV emission was generated with irradiation of excimer laser. We proposed that such optical properties were due to 02 molecule trapped in glass because they were similar to photochemistry of 02 molecule in the gas phase which could be shown as:

When silica glasses were fabricated under chlorine ambient, a minor fraction was found to be present as Cl2 molecule trapped in the glass, which gives the absorption band at 3.8eV.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 244: Symposium J – Optical Waveguide Materials , 1991 , 21
Copyright
Copyright © Materials Research Society 1992

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References

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