Vortex light shaping and multi-singular-point control method based on high-order crossed phase

Abstract

The invention relates to a vortex light shaping and multi-singular-point control method based on a high-order cross phase. Vortex light is a special light field with a spiral wave front, a cross phaseis a special light field phase structure, and the third order or more is called as a high-order cross phase. The method comprises the following steps: firstly, preparing a holographic sample carryingvortex light information and a high-order cross phase by utilizing a multi-parameter combined regulation and control technology, and loading same to a spatial light modulator; emitting a linear polarization Gaussian beam to the spatial light modulator for complex amplitude modulation, wherein the emergent light is vortex light carrying a high-order cross phase, and vortex light with a required shape and odd point distribution can be obtained after the emergent light is propagated for a certain distance. The method is simple in light path and high in flexibility, belongs to the field of vortexlight control, and can be applied to shaping and multi-singular-point control of complex vortex light.

Description

technical field [0001] The invention relates to a method for vortex light shaping and multi-singular point manipulation based on high-order cross-phase. Vortex light is a special light field with a helical wavefront, cross-phase is a special light field phase structure, and the third order and above are called high-order cross-phase. First, a holographic pattern carrying vortex light information and high-order cross-phase is prepared by using multi-parameter joint control technology, and loaded into the spatial light modulator. A beam of linearly polarized Gaussian beam is irradiated to the spatial light modulator for complex amplitude modulation. The vortex light with high-order cross-phase can get the vortex light with the desired shape and singular point distribution after propagating for a certain distance. The method has a simple optical path and strong flexibility, belongs to the field of vortex light manipulation, and can be applied to the shaping of complex vortex lig...

AI Technical Summary

Problems solved by technology

[0006] The technical solution of the present invention is as follows: Aiming at the difficulty of current vortex light shaping and multi-singularity control, a method for vortex light shaping and multi-singularity control based on high-order cross-phase is proposed. This method has a simple optical path and strong flexibility. Vortex lights with different shapes and singularity distributions can be flexibly prepared by using high-order cross-phase according to laboratory needs

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