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Generation of 40-as few-cycle pulse through chirp manipulation

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Abstract

We discuss theoretically how supercontinuum spectra produced from high-order harmonic generation processes in a synthesized same-color laser field is optimized by adjusting the chirp parameter of the controlling pulse. Furthermore, a 40-attosecond isolated pulse with an effective bandwidth of 121 orders is obtained from He+ ion when the chirp rate ratio of pulses has a small value. The numerical results show that the efficiency of single as pulse generation is enhanced, and the quantum paths are controlled successfully. Our simulation shows that the produced pulses with high signal-to-noise ratio are obtained straightforwardly without any phase compensation. These results are explained using the classical approach.

补充资料

DOI:10.3788/col201210.081901

所属栏目:Nonlinear optics

责任编辑:张雁

收稿日期:2011-12-05

修改稿日期:2012-02-25

网络出版日期:2012-05-16

联系人作者:联系作者(s batebi@guilan.ac.ir)

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