EXPERIMENTAL-STUDY OF THE SUPERCONTINUUM SPECTRAL WIDTH EVOLUTION IN CO2 GAS

被引:20
作者
FRANCOIS, V
ILKOV, FA
CHIN, SL
机构
[1] Centre d'Optique, Photonique et Laser, Département de Physique, Québec
关键词
D O I
10.1016/0030-4018(93)90087-L
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Experimental results on the evolution, as a function of pressure, of the supercontinuum spectrum generated in CO2 gas (1-40 atm) by weakly focussed 1 ps pulses at 593 nm are described. They are adequately fitted by a self-phase modulation model including the effect of self-steepening of the pulse. Above a given pressure optical breakdown appears in the gas. Optical breakdown during supercontinuum generation affects differently the behaviour of the red and blue side broadenings since the blue side stops broadening after a certain pressure while the red side keeps increasing.
引用
收藏
页码:241 / 246
页数:6
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