New theoretical approach to high order harmonic generation

J. Gao, F. Shen, J. G. Eden

Research output: Contribution to journalConference articlepeer-review


The transition matrix describing the interactions of an atom with a quantized optical field through quantum Volkov states is derived from the nonperturbative quantum electrodynamic scattering theory formalism for multiphoton (MPI) and above threshold (ATI) ionization. The expression includes the transition from the intermediate Volkov states. While the derivation maintains momentum and energy conservation of an electron-photon system, it gives out harmonic generation (HG) features. This yields analytical expressions for the high-order HG phenomena and offers a new perspective from the semiclassical view that the quantized field Volkov to Volkov state transition is the dominant mechanism for HG. A clear connection is also drawn between HG and ATI.

Original languageEnglish (US)
Pages (from-to)48-49
Number of pages2
JournalConference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 11th Annual Meeting IEEE Lasers and Electro-Optics Society, LEOS. Part 2 (of 2) - Orlando, FL, USA
Duration: Dec 1 1998Dec 4 1998

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


Dive into the research topics of 'New theoretical approach to high order harmonic generation'. Together they form a unique fingerprint.

Cite this