Controls for the generation of high-order harmonics and attosecond pulses by an infrared laser field combined with a low-frequency pulse |
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| Authors: | He Hai-Xiang Guo Ya-Hui and He Guo-Zhong |
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| Institution: | State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China |
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| Abstract: | We investigate high-order harmonic generations by controlling various quantum paths of harmonics in an infrared laser field which combines a low-frequency pulse.Both classical theory and the quantum wavelet transform method are used to understand the physics of harmonics.By adjusting the carrier envelope phase of the fundamental field,the intensities of harmonic spectra increase and the harmonics in the plateau become regular.Attosecond pulses each with a duration of 58 as are obtained directly by compressing the harmonics,and with phase compensation an isolated attosecond pulse less than 30 as can be generated. |
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| Keywords: | high-order harmonics isolated attosecond pulse LZH-DICP code |
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