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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 8 — Apr. 16, 2007
  • pp: 5050–5058

Phase velocity nonuniformity-resulted beam patterns in difference frequency generation

Daquan Lu, Liejia Qian, Yongzhong Li, Hua Yang, Heyuan Zhu, and Dianyuan Fan  »View Author Affiliations

Optics Express, Vol. 15, Issue 8, pp. 5050-5058 (2007)

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The evolution of the difference frequency generation between a planar pump wave and a focused signal wave has been numerically investigated in this paper. We show that, at the difference frequency wave, various beam patterns such as ring and moon-like, are resulted due to the nonuniform distribution of phase velocity in the focused signal wave. The subluminal and superluminal regions can be identified by the intersection of two generated beam profiles that correspond to a pair of phase-mismatches with equal value but opposite signs.

© 2007 Optical Society of America

OCIS Codes
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(350.4990) Other areas of optics : Particles

ToC Category:
Nonlinear Optics

Original Manuscript: December 20, 2006
Revised Manuscript: March 21, 2007
Manuscript Accepted: March 28, 2007
Published: April 11, 2007

Daquan Lu, Liejia Qian, Yongzhong Li, Hua Yang, Heyuan Zhu, and Dianyuan Fan, "Phase velocity nonuniformity-resulted beam patterns in difference frequency generation," Opt. Express 15, 5050-5058 (2007)

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