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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 28, Iss. 11 — Nov. 1, 2011
  • pp: 2702–2711

Second harmonic generation of individual centrosymmetric sphere excited by a tightly focused beam

Bingzhong Huo, Xianghui Wang, Shengjiang Chang, Ming Zeng, and Guohua Zhao  »View Author Affiliations


JOSA B, Vol. 28, Issue 11, pp. 2702-2711 (2011)
http://dx.doi.org/10.1364/JOSAB.28.002702


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Abstract

Based on vector diffraction theory, an analytical integral representation to calculate the field gradient of focused electromagnetic fields is derived by using the differential recursion formula between the Bessel functions with different order. Within the phenomenological model for second harmonic generation (SHG) of centrosymmetric material, the second harmonic (SH) response of a single centrosymmetric spherical particle excited by a focused beam under different values of the NA is investigated theoretically. The results show that, with increasing NA, the SH radiation pattern of the surface response hardly changes. For the larger value of the NA, because the elements of the field gradient are almost the same order of magnitude and the relative magnitudes of E y and E z increase, the bulk response related to the parameters δ and ζ become remarkable.

© 2011 Optical Society of America

OCIS Codes
(000.3860) General : Mathematical methods in physics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.3970) Nonlinear optics : Microparticle nonlinear optics
(240.4350) Optics at surfaces : Nonlinear optics at surfaces
(260.1960) Physical optics : Diffraction theory
(260.2110) Physical optics : Electromagnetic optics

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 2, 2011
Manuscript Accepted: September 15, 2011
Published: October 20, 2011

Citation
Bingzhong Huo, Xianghui Wang, Shengjiang Chang, Ming Zeng, and Guohua Zhao, "Second harmonic generation of individual centrosymmetric sphere excited by a tightly focused beam," J. Opt. Soc. Am. B 28, 2702-2711 (2011)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-28-11-2702

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