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Experimental study of chirp effect on supercontinuum generation in photonic crystal fibers

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Abstract

The chirp effect in supercontinuum (SC) generation in photonic crystal fibers (PCFs) is researched carefully in experiment. Using an acoustic-optics programmable dispersive filter (AOPDF), the 1-4 order dispersions of the pulses from femtosecond oscillator can be accurately controlled. The experimental results show the SC generation in PCF is sensitive to the chirp of incident pulse, and the output spectrum and conversion efficiency can be tuned by changing the initial dispersion state. With different group delay dispersion (GDD) brought to the incident pulse, we find that positive chirp can enhance the energy conversion to long wavelength, and negative chirp can enhance the conversion to short wavelength. Specially, an optimal negative chirp can maximize the conversion to the shortest one at about 625 nm. The effect of the third-order dispersion (TOD) also has been investigated, and we find that the same value of the positive and negative TOD has the similar effect on the SC.

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收稿日期:1949-01-01

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姜永亮:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
周冰:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
冷雨欣:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
梁晓燕:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
徐至展:State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800

联系人作者:姜永亮(jiangyongliang@siom.ac.cn)

备注:This work was partially supported by the National Natural Science Foundation of China (No. 10576012 and 60538010), the National High-Technology Research and Development Program of China (No. 2004AA84ts12), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (No. 20040532005). Y. Jiang's e-mail address is jiangyongliang@siom.ac.cn.

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引用该论文

Yongliang Jiang, Bing Zhou, Yuxin Leng, Xiaoyan Liang, Zhizhan Xu, "Experimental study of chirp effect on supercontinuum generation in photonic crystal fibers," Chinese Optics Letters 5(s1), 229-231 (2007)

被引情况

【1】. Experimental study of an ultra narrow linewidth f iber laser by injection locking. Chinese Optics Letters, 2012, 10(8): 80601-80603

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