Abstract
The dynamics of the inward-focusing ring Airy beam in nonlocally defocusing nonlinear media is investigated in detail, and a bottle beam shape can be observed by adjusting the amplitude of the inward-focusing ring Airy beam and the nonlocality of the media. The gradient force of the bottle beam is numerically studied. It is worth mentioning that the bottle beams are formed in the nonlinear regime, which indicates that much higher intensity is allowable for these beams than those in the linear regime. Our approach and results may pave the way to the optical tweezers in the nonlinear regime.
Highlights
IntroductionAutofocusing property enables the ring Airy beam to have enormously potential applications in creating ablation spots [6], biomedical treatment [7], nonlinear optical processes [8] and optical manipulations [9]–[11]
It is worth mentioning that the bottle beams are formed in the nonlinear regime, which indicates that much higher intensity is allowable for these beams than those in the linear regime
Our approach and results may pave the way to the optical tweezers in the nonlinear regime
Summary
Autofocusing property enables the ring Airy beam to have enormously potential applications in creating ablation spots [6], biomedical treatment [7], nonlinear optical processes [8] and optical manipulations [9]–[11]. What’s more, the self-focusing/defocusing of the OKE refers to the phenomenon that the optical beam propagating in the bulk medium with the homogeneous n0 can focus or defocus itself by inducing NRI. This paper is organized as follows: In Section 2 we describe the theoretical model of the inwardfocusing ring Airy beam propagating in nonlocally defocusing nonlinear media, and the generation of a bottle beam by adjusting the parameters of the initial beam and the nonlocality of the media; In Section 3 we further discuss the gradient force field of the bottle beam; In Section 4 we summarize the results of this paper
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