Investigation of glow discharge of gas in hollow-core fibers

被引：16

作者：

Shi, X. ^{[1
]}

Wang, X. B. ^{[2
]}

Jin, W. ^{[1
]}

Demokan, M. S. ^{[1
]}

机构：

[1] Hong Kong Polytech Univ, Dept Elect Engn, Kowloon, Hong Kong, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Optoelect Sci & Engn, Wuhan 430074, Peoples R China

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2008年 / 91卷 / 02期

关键词：

D O I：

10.1007/s00340-008-3007-5

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

For the purpose of constructing novel waveguide gas lasers based on hollow-core fibers, we carried out a series of discharge experiments and succeeded in obtaining sustained glow discharge of gas in a 150-mu m-inner-diameter (i.d.) hollow-core fiber with the length of 13.7 cm and in a 50-mu m-i.d. hollow-core fiber with the length of 2.9 cm by using longitudinal direct current excitation. A flash glow is also observed in hollow-core photonic bandgap fiber with 20-mu m i.d. and 2.6-cm length. Initial measurements of current-voltage (I-V) characteristics have been carried out for fibers of various hollow-core sizes filled with various gases at different pressures. Theoretical I-V characteristics are presented and compared with experimental results. Gas discharges in miniature-bore hollow-core fibers were found to exhibit unique characteristics that are different from the traditional larger-bore-diameter tubes. The glow-discharge spectrum of helium gas in a 150-mu m-i.d. and 8-cm-length hollow-core fiber is also presented.

引用

页码：377 / 380

页数：4

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