Title :
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
fDate :
3/15/2006 12:00:00 AM
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2006.871110
