Formal Scattering Approach to High-Order Harmonic Generation

Chin. Phys. Lett.

1999, Vol. 16

Issue (7): 502-504 DOI:

Original Articles

Formal Scattering Approach to High-Order Harmonic Generation

GAO Liang-hui¹;LI Xiao-feng¹;GUO Dong-sheng²;FU Pan-ming¹

¹Laboratory of Optical Physics, Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080 ²Department of Physics, Southern University and A&M College, Baton Rouge, Louisiana 70813, USA

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GAO Liang-hui, LI Xiao-feng, GUO Dong-sheng et al 1999 Chin. Phys. Lett. 16 502-504

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Abstract By using the time-independent formal scattering theoretical approach, we develop a nonperturbative quantum electrodynamics theory to describe high-order harmonic generation (HHG). This theory recovers the semi-classical interpretation of Corkum (Phys. Rev. Lett. 71 (1993) 1994) and gives the same phenomenological cutoff law. The HHG emission rate is expressed as an analytic closed form. We also discuss the connection between HHG and the above threshold ionization from the scattering viewpoint.

Keywords: 32.80.Rm 42.65.Ky 03.65.Nk

Published: 01 July 1999

PACS:	32.80.Rm	(Multiphoton ionization and excitation to highly excited states)
	42.65.Ky	(Frequency conversion; harmonic generation, including higher-order harmonic generation)
	03.65.Nk	(Scattering theory)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1999/V16/I7/0502

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