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Many-mode Floquet theoretical approach for coherent control of multiphoton dynamics driven by intense frequency-comb laser fields
Son, Sang-Kil Chu, Shih-I
Son, Sang-Kil
Chu, Shih-I
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Abstract
We extend the many-mode Floquet theorem (MMFT) for the investigation of multiphoton resonance dynamics driven by intense frequency-comb laser fields. The frequency comb structure generated by a train of short laser pulses can be exactly represented by a combination of the main frequency and the repetition frequency. MMFT allows non-perturbative and exact treatment of the interaction of a quantum system with the frequency-comb laser fields. We observe simultaneous multiphoton resonance processes between a two-level system and frequency-comb laser. The multiphoton processes can be coherently controlled by tuning the laser parameters such as the carrier-envelope phase (CEP) shift. In particular, high-order harmonic generation shows immense enhancement by tuning the CEP shift, due to simultaneous multiphoton resonances.
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This is the publisher's version, also available electronically from http://journals.aps.org/pra/abstract/10.1103/PhysRevA.77.063406.
Date
2008-06-05
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American Physical Society
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Son, Sang-Kil; Chu, Shih-I. (2008). "Many-mode Floquet theoretical approach for coherent control of multiphoton dynamics driven by intense frequency-comb laser fields." Physical Review A, 77(06):063406. http://dx.doi.org/10.1103/PhysRevA.77.063406.