Dependence of defects induced by excimer laser on intrinsic structural defects in synthetic silica glasses

Hiroaki Imai, Kazuo Arai, Hideo Hosono, Yoshihiro Abe, Takehiko Arai, Hiroshi Imagawa

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

Effects of intrinsic defects on defect formation by excimer-laser irradiation were examined in synthetic silica glasses prepared by different methods. In samples containing oxygen-deficient centers (ODCs), laser-induced E centers were stable at room temperature. In contrast, in samples heat treated in H2 atmosphere, in which almost all ODCs changed into Si-H bonds, the induced-E- center concentration increased by about two orders of magnitude, and the resulting E centers were unstable, decaying at room temperature. We thus conclude that the formation efficiency of E centers from Si-H bonds is much higher than that of ODCs and that the induced-E centers recombine with radiolytic molecular H2 to restore Si-H bonds. It is suggested that a trace amount of Si-H bonds plays an essential role in defect creation and annihilation in OH-containing silica glasses.

Original languageEnglish
Pages (from-to)4812-4818
Number of pages7
JournalPhysical Review B
Volume44
Issue number10
DOIs
Publication statusPublished - 1991
Externally publishedYes

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silica glass
Excimer lasers
Fused silica
excimer lasers
Oxygen
Defects
defects
Laser beam effects
Temperature
oxygen
Lasers
room temperature
atmospheres
heat
irradiation
lasers

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Dependence of defects induced by excimer laser on intrinsic structural defects in synthetic silica glasses. / Imai, Hiroaki; Arai, Kazuo; Hosono, Hideo; Abe, Yoshihiro; Arai, Takehiko; Imagawa, Hiroshi.

In: Physical Review B, Vol. 44, No. 10, 1991, p. 4812-4818.

Research output: Contribution to journalArticle

Imai, Hiroaki ; Arai, Kazuo ; Hosono, Hideo ; Abe, Yoshihiro ; Arai, Takehiko ; Imagawa, Hiroshi. / Dependence of defects induced by excimer laser on intrinsic structural defects in synthetic silica glasses. In: Physical Review B. 1991 ; Vol. 44, No. 10. pp. 4812-4818.
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AU - Imagawa, Hiroshi

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