Generation of isolated attosecond pulses with a specific waveform two-color laser field
Chinese Optics Letters, Vol. 9, Issue 4, pp. 041901- (2011)
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Abstract
We theoretically propose a new method for generating intense isolated attosecond pulses during high-order harmonic generation (HHG) process by accurately controlling electron motion with a two-color laser field, which consists of an 800-nm, 4-fs elliptically polarized laser field and a 1400-nm, ~43-fs linearly polarized laser field. With this method, the supercontinua with a spectral width above 200 eV are obtained, which can support a ~15-as isolated pulse after phase compensation. Classical and quantum analyses explain the controlling effects well. In particular, when the pulse duration of the 800-nm laser field increases to 20-fs, sub-100-as isolated pulses can be obtained even without any phase compensation.
© 2011 Chinese Optics Letters
OCIS Codes
(190.4160) Nonlinear optics : Multiharmonic generation
(340.7480) X-ray optics : X-rays, soft x-rays, extreme ultraviolet (EUV)
(020.2649) Atomic and molecular physics : Strong field laser physics
Citation
Jinping Yao, Yao Li, and Ya Cheng, "Generation of isolated attosecond pulses with a specific waveform two-color laser
field," Chin. Opt. Lett. 9, 041901- (2011)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-9-4-041901
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