High-speed photography, spectra, and temperature of optical discharge in silica-based fibers

Author

Dianov, E.M. ; Fortov, V.E. ; Bufetov, I.A. ; Efremov, V.P. ; Rakitin, A.E. ; Melkumov, M.A. ; Kulish, M.I. ; Frolov, A.A.

Author_Institution

Fiber Opt. Res. Center, Russian Acad. of Sci., Moscow, Russia

Volume

18

Issue

6

fYear

2006

fDate

3/15/2006 12:00:00 AM

Firstpage

752

Lastpage

754

Abstract

The dynamics of fiber fuse effect including process of bubble formation in fiber core was investigated. Bubbles in the core were observed not later than 20/spl divide/70 μs after the plasma forepart passed. For the first time, the temperature of optical discharge was measured for a wide range of laser radiation powers. For 40-W laser power, the temperature reached 10⁴ K, the velocity of discharge propagation having increased to 10 m/s.

Keywords

bubbles; discharges (electric); high-speed optical techniques; laser beam effects; optical fibres; photography; plasma diagnostics; plasma temperature; silicon compounds; 10 m/s; 10E4 K; 40 W; SiO/sub 2/; bubble formation; discharge propagation velocity; fiber core; fiber fuse effect; high-speed photography; high-speed spectra; high-speed temperature; laser radiation powers; optical discharge; optical discharge temperature; plasma forepart; silica-based fibers; Fiber lasers; Fuses; High speed optical techniques; Optical propagation; Photography; Plasma measurements; Plasma temperature; Power lasers; Temperature distribution; Time measurement; Fiber fuse effect; laser radiation effects; optical discharge propagation; optical fibers; temperature measurement;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2006.871110

Filename

1599431