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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 5, Iss. S1 — May. 31, 2007
  • pp: S229–S231

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

Yongliang Jiang, Bing Zhou, Yuxin Leng, Xiaoyan Liang, and Zhizhan Xu  »View Author Affiliations


Chinese Optics Letters, Vol. 5, Issue S1, pp. S229-S231 (2007)


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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.

© 2007 Chinese Optics Letters

OCIS Codes
(140.3510) Lasers and laser optics : Lasers, fiber
(300.6420) Spectroscopy : Spectroscopy, nonlinear
(320.1590) Ultrafast optics : Chirping
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

Citation
Yongliang Jiang, Bing Zhou, Yuxin Leng, Xiaoyan Liang, and Zhizhan Xu, "Experimental study of chirp effect on supercontinuum generation in photonic crystal fibers," Chin. Opt. Lett. 5, S229-S231 (2007)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-5-S1-S229


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