System for producing various vector beams

Abstract

The invention relates to a system for producing various vector beams, in particular to a system for producing various vector beams, which has no need of special devices, low cost, high conversion efficiency and easy realization. The system comprises a cat eye cavity laser and a laser interference part, wherein, the cat eye cavity laser is used for outputting various transverse modes, and the structure of the cat eye cavity laser comprises a cat eye reverse device composed of a concave mirror, a convex lens or a lens group to serve as a cavity mirror; the laser interference part is used for producing various vector beams for beams output by the cat eye cavity laser via beam splitting, reflecting, beam rotating, coherent combination and the like. Various vector beams can be produced by adjusting space between the concave mirror and the convex lens or the lens group in the cat eye reverse device, adjusting phase position of two beams after beam splitting and adjusting intensity. The invention can only utilize one system to produce various vector beams, and can be widely used in the fields of optical manipulation, optical imaging, information transmission, quantum optics, laser machining and the like.

Description

technical field [0001] The present invention relates to an optical system, in particular to a system for generating multiple vector beams. Background technique [0002] Linearly polarized beams, circularly polarized beams and elliptically polarized beams are well-known forms of polarized light in the field of optics, and are widely used in many fields of optics. The common feature of these differently polarized beams is that the polarization state of each point in the wavefront is the same. Generally, the wavefront is a plane or spherical surface, and the field intensity distribution in the wavefront is a Gaussian distribution with the peak at the center of the wavefront. However, with the development of optical technology, the performance of the above-mentioned traditional polarized beams is no longer enough to meet the needs of cutting-edge research. In recent years, a variety of special beams have been recognized and gradually applied. For example: TEM 01 、TEM 02 、TEM...

AI Technical Summary

Problems solved by technology

At present, the methods for generating vector beams mainly rely on special devices, such as spiral phase devices, special cavity mirrors, special crystals, special liquid crystals, etc. The manufacture of these special devices limits the wide application of these methods; the method of using spatial light modulators The cost of the system is too high; and the method of using optical fiber to generate vector beams has large loss and low conversion efficiency

Many deficiencies in the above method of generating vector beams have affected the effect and promotion of its application in various fields of optics

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