Extra-cavity generation method and device for three-dimensional wave packet track coupling light beam

Abstract

The embodiment of the invention provides an extra-cavity generation method and device of a three-dimensional wave packet track coupling light beam, electronic equipment and a storage medium. The method comprises the steps of: building a light field modulation device which can modulate to obtain a Gaussian light beam of which the beam waist position is close to the light sensing surface of a spatial light modulator; establishing a wave trace diiconicity theory of a coherent state light field, and determining target parameters corresponding to a three-dimensional wave packet track coupling light beam light field according to the wave trace diiconicity theory; according to the target parameters, calculating to obtain a phase holographic template, and writing the phase holographic template into the spatial light modulator; and irradiating the Gaussian beam on the spatial light modulator loaded with the phase holographic template graph to obtain a target light field. According to the extra-cavity generation method and device for the three-dimensional wave packet track coupling light beam of the embodiment of the invention, strict and accurate adjustment of parameters of a laser resonant cavity to meet harsh conditions is avoided, meanwhile, the three-dimensional wave packet track coupling light beam can be generated in a larger range in a more stable and controllable manner. The method has the advantages of being convenient to operate and capable of flexibly customizing a light field.

Description

technical field [0001] The invention relates to the field of light field regulation, in particular to a method, device, electronic equipment and storage medium for extracavity generation of a three-dimensional wave packet trajectory coupled light beam. Background technique [0002] Light field modulation generally refers to the intensity and phase modulation of the spatial distribution of the light field to obtain a structured beam with specific intensity and phase distribution, which is widely used in optical communication, optical micro-manipulation, special processing, quantum optics and other fields. SU(2) coherent state beam, as a special light source that embodies quantum-classical correlation, has extremely rich transverse mode characteristics, and can be used in the fields of optical manipulation of quantum optics, microparticle manipulation, and quantum communication. [0003] At present, the only method to generate SU(2) coherent state in the prior art is the Frequ...

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Problems solved by technology

It is precisely because this method depends heavily on the parameters of the resonant cavity (cavity length, cavity mirror curvature, etc.), and it is necessary to strictly and accurately adjust the cavity parameters (cavity length, cavity mirror curvature, etc.) to meet the harsh conditions of frequency degenerate cavities. It is difficult to realize the conversion of different SU(2) coherent state modes; at the same time, due to the limitations of the stability of the resonator and the length of the cavity, various types of SU(2) coherent state light fields cannot be generated by this method; in addition, due to the Due to the limitations of the resonator itself, it is difficult to flexibly control the eigenstates of the SU(2) coupling in the resonator. Generally, the resonator can only output the Hermitian-Gaussian mode family, and other SU(2) eigenmodes need to pass through the cavity External mode conversion produces

The above characteristics all show that complex tuning based on the cavity not only increases the cost, but also severely limits the work efficiency and tuning flexibility.

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