Chinese Optics Letters, 2011, 9 (4): 041901, Published Online: Mar. 18, 2011
Generation of isolated attosecond pulses with a specific waveform two-color laser field
单个阿秒脉冲 高次谐波产生 双色场 190.4160 Multiharmonic generation 340.7480 X-rays, soft x-rays, extreme ultraviolet (EUV) 020.2649 Strong field laser physics
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.
Jinping Yao, Yao Li, Ya Cheng. Generation of isolated attosecond pulses with a specific waveform two-color laser field[J]. Chinese Optics Letters, 2011, 9(4): 041901.
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