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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 5 — May. 1, 2007
  • pp: 1150–1154

Origin of ellipticity anomaly in harmonic generation in C 60

G. P. Zhang and Thomas F. George  »View Author Affiliations


JOSA B, Vol. 24, Issue 5, pp. 1150-1154 (2007)
http://dx.doi.org/10.1364/JOSAB.24.001150


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Abstract

Scanning through laser field strength and ellipticity, we show that the ellipticity anomaly in harmonic generation in C 60 results from uneven saturations at different laser ellipticities. The smaller the laser ellipticity is, the faster the harmonic generation yield saturates with the laser strength. Harmonic generations at nonzero ellipticities take advantage of the earlier saturation at zero ellipticity, continue to grow with the laser field strength and eventually surpass the zero-ellipticity harmonic generation, which leads to the anomalous dependence. The theory predicts that the ellipticity dependence in C 60 is much richer than those found in atoms: With an increase in laser field strength, a single maximum can be split into multiple maxima, and the global maximum comes back to zero ellipticity and reclaims its dominance over all other peaks.

© 2007 Optical Society of America

OCIS Codes
(020.0020) Atomic and molecular physics : Atomic and molecular physics
(190.0190) Nonlinear optics : Nonlinear optics
(190.4160) Nonlinear optics : Multiharmonic generation

ToC Category:
Nonlinear Optics

History
Original Manuscript: August 24, 2006
Revised Manuscript: January 2, 2007
Manuscript Accepted: January 12, 2007
Published: April 17, 2007

Citation
G. P. Zhang and Thomas F. George, "Origin of ellipticity anomaly in harmonic generation in C60," J. Opt. Soc. Am. B 24, 1150-1154 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-5-1150


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