Theoretical analysis of highorder harmonic generation from a coherent superposition of states
Abstract
A quantum theory of highorder harmonic generation by a strong laser field in the presence of more bound states is formulated. The obtained numerical and analytical results for a twostate hydrogenlike atom model show that the harmonic spectrum consists of two parts: a usual singlestate harmonic spectrum of odd harmonics having the energies (2k+1){omega} and a resonant part with the peaks around the excitation energy {delta}{omega}. The energy of the harmonics in the resonant part of the spectrum is equal to {delta}{omega}{+}{omega}, {delta}{omega}{+}3{omega}, .... For energies higher than the excitation energy, the resonant part forms a plateau, followed by a cutoff. The emission rate of the harmonics in this resonant plateau is many orders of magnitude higher than that of the harmonics generated in the presence of the ground state alone. The influence of the depletion of the initial states, as well as of the pulse shape and intensity, is analyzed.
 Authors:
 Faculty of Science, University of Sarajevo, Zmaja od Bosne 35, 71000 Sarajevo (Bosnia and Herzegowina)
 (Germany)
 Publication Date:
 OSTI Identifier:
 20768719
 Resource Type:
 Journal Article
 Resource Relation:
 Journal Name: Journal of the Optical Society of America. Part B, Optical Physics; Journal Volume: 23; Journal Issue: 2; Other Information: DOI: 10.1364/JOSAB.23.000308; (c) 2006 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOMIC MODELS; BEAM OPTICS; BOUND STATE; EXCITATION; GROUND STATES; HARMONIC GENERATION; HARMONICS; HYDROGEN; LASER RADIATION; MULTIPHOTON PROCESSES; PULSE SHAPERS; SPECTRA
Citation Formats
Milosevic, Dejan B., and MaxBornInstitut, MaxBornStrasse 2a, Berlin, 12489. Theoretical analysis of highorder harmonic generation from a coherent superposition of states. United States: N. p., 2006.
Web. doi:10.1364/JOSAB.23.000308.
Milosevic, Dejan B., & MaxBornInstitut, MaxBornStrasse 2a, Berlin, 12489. Theoretical analysis of highorder harmonic generation from a coherent superposition of states. United States. doi:10.1364/JOSAB.23.000308.
Milosevic, Dejan B., and MaxBornInstitut, MaxBornStrasse 2a, Berlin, 12489. Wed .
"Theoretical analysis of highorder harmonic generation from a coherent superposition of states". United States.
doi:10.1364/JOSAB.23.000308.
@article{osti_20768719,
title = {Theoretical analysis of highorder harmonic generation from a coherent superposition of states},
author = {Milosevic, Dejan B. and MaxBornInstitut, MaxBornStrasse 2a, Berlin, 12489},
abstractNote = {A quantum theory of highorder harmonic generation by a strong laser field in the presence of more bound states is formulated. The obtained numerical and analytical results for a twostate hydrogenlike atom model show that the harmonic spectrum consists of two parts: a usual singlestate harmonic spectrum of odd harmonics having the energies (2k+1){omega} and a resonant part with the peaks around the excitation energy {delta}{omega}. The energy of the harmonics in the resonant part of the spectrum is equal to {delta}{omega}{+}{omega}, {delta}{omega}{+}3{omega}, .... For energies higher than the excitation energy, the resonant part forms a plateau, followed by a cutoff. The emission rate of the harmonics in this resonant plateau is many orders of magnitude higher than that of the harmonics generated in the presence of the ground state alone. The influence of the depletion of the initial states, as well as of the pulse shape and intensity, is analyzed.},
doi = {10.1364/JOSAB.23.000308},
journal = {Journal of the Optical Society of America. Part B, Optical Physics},
number = 2,
volume = 23,
place = {United States},
year = {Wed Feb 15 00:00:00 EST 2006},
month = {Wed Feb 15 00:00:00 EST 2006}
}

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