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Influence of Initial Pulse Chirp on Rainbow-Like Supercontinuum Generation from Filamentation in Air |
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| Authors: | HAO Zuo-Qiang ZHANG Jie ZHANG Zhe LU Xin JIN Zhan ZHONGJia-Yong LIU Yun-Quan WANG Zhao-Hua |
| Institution: | Beijing National Laboratory for Condensed Matter Physics,Institute of Physics, Chinese Academy of Sciences, Beijing 100080Laboratoire de Spectrometrie Ionique et Moleculaire, UMR CNRS 5579, Universite Claude Bernard Lyon 1, 43, Bd. du 11 Novembre 1918, F-69622 Villeurbanne Cedex, FranceDepartment of Physics, Shanghai Jiao Tong University, Shanghai 200240 |
| Abstract: | Supercontinuum (SC) generation from laser filamentation in air is foundto depend strongly on the pulse duration. Rainbow-like SC generation isobserved only for a pulse of appropriate negative chirp that agreeswith the predictions put forward by Golubtsov it et al. it Quantum Electron. 33 (2003) 525]. The conversion efficiency of an 800-nm laser light to rainbow-like SC is found to be the highest for 257fs pulses with an initial negative chirp. A larger chirp will lead to filamentation surviving at longer distance. |
| Keywords: | 52 38 Hb 42 65 Jx 42 65 Ky |
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