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Coherent control of the electron quantum paths for the generation of single ultrashort attosecond laser pulse

Chu, Shih-I
Li, Peng-Cheng
Liu, I-Lin
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Abstract
We report a mechanism and a realizable approach for the coherent control of the generation of an isolated and ultrashort attosecond (as) laser pulse from atoms by optimizing the two-color laser fields with a proper time delay. Optimizing the laser pulse shape allows the control of the electron quantum paths and enables high-harmonic generation from the long- and short-trajectory electrons to be enhanced and split near the cutoff region. In addition, it delays the long-trajectory electron emission time and allows the production of extremely short attosecond pulses in a relatively narrow time duration. As a case study, we show that an isolated 30 as pulse with a bandwidth of 127 eV can be generated directly from the contribution of long-trajectory electrons alone.
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This is the published version, also available here: http://dx.doi.org/10.1103/PhysRevA.84.033414.
Date
2011-09-15
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American Physical Society
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Chu, Shih-I., Li, Peng-Cheng., Liu, I-Lin. "Coherent control of the electron quantum paths for the generation of single ultrashort attosecond laser pulse." Phys. Rev. A 84, 033414 – Published 15 September 2011. http://dx.doi.org/10.1103/PhysRevA.84.033414.
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