Radial high-order perfect vortex beam generation device and method
A vortex beam and generating device technology, applied in the optical field, can solve problems such as hindering the diversity of perfect vortex beams, unable to meet complex structured light fields, etc., and achieve the effects of high conversion rate, stable beam, and simple optical path.
Inactive Publication Date: 2020-04-14
SHENZHEN UNIV
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Problems solved by technology
However, the generation method of radial high-order perfect vortex beams has not yet been studied, and most applications are based on radial zero-order perfect vortex beams, which cannot meet the needs of complex structured light fields and seriously hinder the development of perfect vortex beams. Diversity in practical application
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[0027] In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0028] see figure 1 , figure 1 It is a structural schematic diagram of a preferred embodiment of the device for generating radial high-order perfect vortex beams of the present invention.
[0029] like figure 1 As shown, an embodiment of the present invention provides a device for generating a radial high-order perfect vortex beam, and the device for generating a radial high-order perfect vortex beam includes:
[0030] A laser 1 for outputting a Gaussian beam;
[0031] A Glan prism 2 arranged behind the laser 1 for polarization modulation of the Gaussian beam to generate a horizontal...
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Abstract
The invention discloses a radial high-order perfect vortex beam generation device and method. The device comprises a laser for outputting a Gaussian light beam; a Glan prism which is arranged behind the laser and is used for carrying out polarization modulation on the Gaussian light beam to generate a horizontal line polarization Gaussian beam; a spatial light modulator which is arranged behind the Glan prism and is used for carrying out phase modulation on the horizontal line polarization Gaussian beam to generate a radial high-order perfect vortex beam; and a CCD camera which is arranged under the spatial light modulator and is used for carrying out light intensity detection on the radial high-order perfect vortex light beam. The radial high-order perfect vortex light beam phase diagramis loaded to the spatial light modulator, the spatial light modulator is used for modulating the incident light beam, and finally, the radial high-order perfect vortex light beam is generated; and themethod and device have the advantages of being simple in light path, stable in light beam, high in conversion rate and high in flexibility.
Description
technical field [0001] The invention relates to the field of optical technology, in particular to a device and method for generating radial high-order perfect vortex beams. Background technique [0002] In recent years, vortex beams carrying orbital angular momentum have broad application prospects in optical communication, biomedicine and other fields. [0003] The vortex beams with different topological charges carry different orbital angular momentum, which are orthogonal and distinguishable in space. Therefore, the channel capacity can be greatly expanded by OAM multiplexing. However, the intensity radius of the vortex beam will increase with the increase of the topological charge, which severely limits the development of the vortex beam in practical applications. Especially in the field of optical communication, too much intensity radius will lead to excessive energy loss and make it difficult for the vortex beam to be coupled into the optical fiber for signal transmi...
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IPC IPC(8): G02B27/28
CPCG02B27/286
Inventor 李瑛李佳鑫王佩佩刘俊敏贺炎亮陈书青赵改清高艳霞范滇元
Owner SHENZHEN UNIV