System and method for coherently superposing and synthesizing multiple Airy beams to obtain high-energy bottle beams

Abstract

The invention discloses a method for coherently superposing and synthesizing multiple Airy beams to obtain high-energy bottle beams. A system comprises a He-Ne laser device, a collimating beam expanding lens, a reflective spatial light modulator, a control computer, a Fourier lens, a microscope objective lens and a CCD (charge coupled device) receiver which are sequentially connected with one anther. The method includes that a laser beam which is in Gaussian distribution is emitted by the laser device and is transmitted to the reflective spatial light modulator after being subjected to collimation and beam expansion, a special phase graph is loaded on the spatial light modulator and is a light intensity pattern, interference of ideal multiple Airy beams and plane beams is simulated by the computer to obtain the light intensity pattern, and the special phase graph is inputted into the spatial light modulator under the control of the computer; beams which are reflected after phases are modulated are further subjected to Fourier transformation by the aid of the Fourier lens, so that the high-energy bottle beams can be generated, can be amplified by the microscope objective lens and then are received by a CCD behind the microscope objective lens. The method has the advantage that the sizes of light bottles can be flexibly controlled.

Description

Technical field [0001] The invention belongs to the field of optical technology and light beam transmission technology, and relates to a method for generating a light bottle light beam, in particular to a high-energy light bottle light beam system and method for coherent superposition and synthesis of multiple Airy beams. Background technique [0002] The bottle beam is a special hollow beam with a zero intensity in the propagation direction of the beam, and the space outside this zone is surrounded by a high-intensity hollow beam. Due to its closed dark hollow area and extremely high intensity gradient, it is these unique optical properties and novel optical properties that make it widely used in optical tweezers, atom trapping, particle manipulation and atom trapping. At present, there are a variety of methods to generate local hollow beams theoretically and experimentally, mainly including Bessel beam interferometry, Gaussian beam interference, vortex beam method, holographic ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects of low energy of light vials and difficult control of the size of light vials in the prior art, the present invention provides a high-energy light vial beam system and method for coherent superposition and synthesis of multiple Airy beams. The method uses a spatial light modulator combined with holographic technology to generate coherent superposition of multiple Airy beams for high-energy light vial beam distribution

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