The Influence of the Self-focusing Effect on the Optical Force Acting on Dielectric Particle  Embedded in Kerr Medium

Hoang Van Nam; Cao Thanh Le; Ho Quang Quy

doi:10.15625/0868-3166/23/2/2732

The Influence of the Self-focusing Effect on the Optical Force Acting on Dielectric Particle Embedded in Kerr Medium

Hoang Van Nam, Cao Thanh Le, Ho Quang Quy

Author affiliations

Authors

Hoang Van Nam Ha Tinh Council of Science and Technology
Cao Thanh Le Hatinh University
Ho Quang Quy Academy of Military Science and Technology

DOI:

https://doi.org/10.15625/0868-3166/23/2/2732

Keywords:

Optical tweezer, Optical force, Kerr effect, Nonlinear medium, Self-focusing.

Abstract

The influence of the self-focusing effect arised from Kerr effect on the optical force acting on the dielecric particle embedded in the Kerr medium, which is irradiated by the Gaussian beam, is proposed to concern. The expressions of the optical forces with the nonlinear refractive index and nonlinear focal length are derived. Using them, the distribution of the optical forces in the trapping region of the optical tweezer is simulated and discussed for same distinguished case of the Kerr medium with different nonlinear coefficients. The results show that the stabe region of the optical tweezer depends on the nonlinear coefficient of refractive index. Moreover, the stable region could be brokendown with a critical value of the nonlinear coefficient of refractive index of the surrounding medium irradiated by Gaussian laser pulse described by given parameters as intensity, duration and radius of beam waist.

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Published

08-07-2013

How to Cite

[1]

H. V. Nam, C. T. Le and H. Q. Quy, The Influence of the Self-focusing Effect on the Optical Force Acting on Dielectric Particle Embedded in Kerr Medium, Comm. Phys. 23 (2013) 155. DOI: https://doi.org/10.15625/0868-3166/23/2/2732.

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Vol. 23 No. 2 (2013)

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