Open AccessExperimental observation on spectrum evolution of femtosecond pulses in filamentation
Author(s) -
Shiying Cao,
Ying Wang,
Wenjie Huang,
Li Chai,
Chingyue Wang,
Jianjun Yang,
Xing Zhu,
Zhigang Zhang
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.005492
Subject(s) - filamentation , femtosecond , protein filament , optics , pulse (music) , materials science , self phase modulation , pulse duration , optical fiber , physics , laser , nonlinear optics , detector , composite material
We present an experimental observation on spectrum evolution of femtosecond pulses in filamentation by introducing a hollow fiber as a probe and moving it along the filament. The results show that at a particular position of the filament, the pulse spectrum from the hollow fiber expands to its maximum, which corresponds to the shortest pulse duration existing in the filament. The influence of gas pressure on the spectrum broadening is also examined.