Photoluminescence lifetime in silica glasses excited by vacuum ultra violet laser irradiation

Hiroyuki Nishikawa*, Ryuta Nakamura, Kaya Nagasawa, Yoshimichi Ohki, Yoshimasa Hama

*この研究の対応する著者

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Photoluminescence bands in silica glasses excited by a VUV (vacuum ultraviolet) laser (7.9 eV) are reported. Luminescence spectra of various types of silicas, prepared under different conditions, exhibit sample-to-sample variations. Several luminescence bands (1.9-eV, 2.7-eV, 3.1-eV, 4.2-eV, 4.3-eV, and 2-4-eV bands) were observed at room temperature. The 2.7-eV band, previously ascribed to a triplet-to-singlet transition of neutral oxygen vacancy, shows a slow decay rate of τ ≅ 10 ms. Relatively slow decay rates of τ ≅ 15 μs and τ ≅ 110 μs were obtained for the 1.9- and 3.1-eV bands, respectively.

本文言語English
ホスト出版物のタイトルProc 3 Int Conf Prop Appl Dielectr Mater
出版社Publ by IEEE
ページ1032-1035
ページ数4
ISBN(印刷版)0879425687
出版ステータスPublished - 1991 12 1
外部発表はい
イベントProceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials - Tokyo, Jpn
継続期間: 1991 7 81991 7 12

出版物シリーズ

名前Proc 3 Int Conf Prop Appl Dielectr Mater

Other

OtherProceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials
CityTokyo, Jpn
Period91/7/891/7/12

ASJC Scopus subject areas

  • 工学(全般)

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