Broadband water window supercontinuum generation with a ω+3ω/2 multicycle two-colour pulse

doi:10.1088/1674-1056/20/8/084206

Abstract We propose a method to generate a high-efficiency broadband water window supercontinuum with a ω+3ω/2 multicycle two-colour pulse. Our results reveal that the 3ω/2 laser pulse can simultaneously modulate the acceleration step and the ionization step, which not only broadens the bandwidth but also enhances the yield of the generated supercontinuum. An ultra-broadband supercontinuum from 290 eV to 555 eV covering the whole water window is generated. Using this method, we expect that an isolated 62-as pulse with a minor pre-pulse can be directly obtained.

Keywords: high-order harmonic attosecond pulse supercontinuum

Received: 13 December 2010
Revised: 11 April 2011
Accepted manuscript online:

PACS:	42.65.Ky	(Frequency conversion; harmonic generation, including higher-order harmonic generation)
	32.80.Rm	(Multiphoton ionization and excitation to highly excited states)
	42.65.Re	(Ultrafast processes; optical pulse generation and pulse compression)

Fund: Project supported by the Program for New Century Excellent Talents in University of China, the National Natural Science Foundation of China (Grant Nos. 10775062 and 10875054), and the Fundamental Research Funds for the Central Universities of China (Grant No. lzujbky-2010-k08).

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Du Hong-Chuan(杜洪川), Wang Xiao-Shan(王小山), and Hu Bi-Tao(胡碧涛) Broadband water window supercontinuum generation with a ω+3ω/2 multicycle two-colour pulse 2011 Chin. Phys. B 20 084206

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Broadband water window supercontinuum generation with a ω+3ω/2 multicycle two-colour pulse

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