Open AccessEnergy exchange between two noncollinear filament-forming laser pulses in air
Author(s) -
Pengji Ding,
Zeqing Guo,
Xiaoshan Wang,
Yu Cao,
Mingze Sun,
Peixi Zhao,
Yanchao Shi,
Shoujin Sun,
Xiaoliang Liu,
Bitao Hu
Publication year - 2013
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.21.027631
Subject(s) - supercontinuum , protein filament , laser , optics , chirp , filamentation , energy exchange , materials science , physics , wavelength , photonic crystal fiber , atmospheric sciences , composite material
Energy exchange between two filament-forming pulses with initially free chirp in air was experimentally studied. It occurs because of the change of delayed nonlinear refractive index, which slightly chirps the incident filament-forming laser pulses. Accompanying energy exchange process, spectral characteristics of output laser pulses shows dramatic blueshift and supercontinuum generation. Nonlinear absorptive effect introduces an inbalance between energy exchange at the negative delays and that at the positive delays, and affects the energy exchange efficiency. These results may provide a more comprehensive understanding of energy exchange process between filament-forming laser pulses.