PREFERRED CONCENTRATION ENHANCEMENT OF PHOTOBLEACHABLE DEFECTS RESPONSIBLE FOR 5 EV OPTICAL-ABSORPTION BAND IN SIO2-GEO2 GLASS PREFORM BY HEATING IN A H2 ATMOSPHERE

被引：24

作者：

HOSONO, H ^{[1
]}

KAWAZOE, H ^{[1
]}

MUTA, K ^{[1
]}

机构：

[1] SHOWA ELECT WIRE & CABLE,SAGAMIHARA 299,JAPAN

来源：

APPLIED PHYSICS LETTERS | 1993年 / 63卷 / 04期

关键词：

D O I：

10.1063/1.110782

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Heat treatment of a 5GeO2-95SiO2 glass preform in a H-2 atmosphere at 500-degrees-C for 70 h increased intensities of an absorption band centered at 5 eV by a factor of - 3. Intensities of photobleachable component, which is the precursor of UV-induced Ge E' centers and assigned to a neutral oxygen monovacancy, of the 5-eV band were enhanced by a factor of approximately 8 by heating. This increment is approximately 3 times as large as that of UV-unbleachable component, which is assigned to Ge2+ centers coordinated by two oxygens (neutral oxygen divacancy).

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页码：479 / 481

页数：3

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