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期刊论文
Experimental observation on spectrum evolution of femtosecond pulses in filamentation
12 June 2006/Vol. 14, No.12/OPTICS EXPRESS 5492，-0001，（）：
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.
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