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All-fiber self-accelerating Bessel-like beam for optical trapping application

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Abstract

We demonstrate an all-fiber transverse self-accelerating Bessel-like beam generator and its optical trapping application. The theoretical and experimental studies have been provided to verify these beam properties. We produce the Bessel-like beam by splicing the single-mode fiber and multimode fiber with a defined offset, and then modulating the output light beam phase by fabricating a small hemispherical-lens fiber tip, therefore the phased-modulated Bessel-like beam generates the properties of transverse self-accelerating. The transverse acceleration of the Bessel-like beam generates here is ~10−4μm−1, which is almost 100 times larger than that of the beam generates in the free-space optical circuit based on the lens. The experimental and simulated results have good consistencies. The realization of the micro particle transverse acceleration transporting with this Bessel-like beam provides a new method for micro particles to be transported in a bending trajectories. This all-fiber transverse self-accelerating Bessel-like beam generator structure is simple, with a high integration, size is small, constitutes a new development for high-precision biological cells experiments and manipulations.

© 2015 Optical Society of America

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