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Composite optical eddy generation method and device thereof

A method of generating optical vortices, applied in optical recording/reproducing/erasing methods, recording/reproducing/erasing using optical interference patterns, radiation/particle processing, etc., can solve the difficulties and difficulties of parallelism and coaxiality Large and other problems, to achieve the effects of variety, simple production process, and increased storage capacity

Inactive Publication Date: 2010-08-25
HAIAN LANBO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is convenient to control the relative intensity and phase of the two optical vortices on the interference arm respectively, but it is difficult to adjust the parallelism and coaxiality of the two optical vortices, and it is difficult to realize the coaxial interference superposition of multiple (>2) vortices bigger

Method used

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  • Composite optical eddy generation method and device thereof
  • Composite optical eddy generation method and device thereof
  • Composite optical eddy generation method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]Please refer to Fig. 2, which is the main optical path structure of the first embodiment of the method for producing a composite optical vortex proposed by the present invention, including a laser light source 1, a beam expander 2, a second beam expander, and A reflecting mirror 3, beam splitter 6-1, by being arranged on the first reference light path shutter 7-1 and reference light path reflector 5-1 on this beam splitter 6-1 reflected light path; 1 the beam splitter 6-2 on the transmitted light path and the second reference light path shutter 7-2 and the reference light path reflector 5-2 on the reflected light path; ...; the nth on the reflected light path of the beam splitter 6-n A reference light path shutter 7-n and a reference light path reflector 5-n, the second reflector 4 on the transmission light path of the beam splitter 6-n, the main shutter 8, the vortex plane holographic generator 12, the first Fourier A leaf transform lens 9 , a first pinhole filter 11 , ...

Embodiment 2

[0047] Please refer to FIG. 4 , which is the main optical path structure of the second embodiment of the method for producing a composite optical vortex proposed by the present invention, including a laser light source 1, a beam expander 2, a second beam expander, and a second optical path arranged on the outgoing light path of the laser light source 1 in sequence. A reflecting mirror 3, beam splitter 6-1, by being arranged on the first reference light path shutter 7-1 and reference light path reflector 5-1 on this beam splitter 6-1 reflected light path; 1 the beam splitter 6-2 on the transmitted light path and the second reference light path shutter 7-2 and the reference light path reflector 5-2 on the reflected light path; ...; the second on the reflected light path of the beam splitter 6-n n reference light path shutters 7-n and reference light path reflectors 5-n, the second reflector 4, the main shutter 8, the spiral phase plate vortex generator 18 on the transmission ligh...

Embodiment 3

[0051] Please refer to FIG. 5 , which is the main optical path structure of the third embodiment of the method for generating a compound optical vortex proposed by the present invention, including a laser light source 1, a beam expander 2, a second beam expander, and A reflecting mirror 3, beam splitter 6-1, by being arranged on the first reference light path shutter 7-1 and reference light path reflector 5-1 on this beam splitter 6-1 reflected light path; 1 the beam splitter 6-2 on the transmitted light path and the second reference light path shutter 7-2 and the reference light path reflector 5-2 on the reflected light path; ...; the nth on the reflected light path of the beam splitter 6-n A reference light path shutter 7-n and a reference light path reflector 5-n, a second reflector 4, a main shutter 8, a mode conversion vortex generator 19 on the beam splitter 6-n transmission light path, a reference light path reflector 5 The direction of the vortex is set so that the ref...

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Abstract

The invention relates to a composite optical eddy generation method and a device thereof. The invention is characterized in that the method and the device belong to the method and the device for compounding eddies through the coaxial overlapping of various optical eddies realized by the angle multiplexing polyad storage technology. The device comprises a light path and a generation device, wherein the light path uses the angle multiplexing technology for realizing the polyad holographical storage and reoccurrence, the light path can realize the holographical storage and reoccurrence of various different optical eddies, the generation device is used for generating the optical eddies, and the generation device can generate different optical eddies according to the requirements. Different light irradiation body holographical recording media are controlled through computer programming for reproducing different eddy combinations, so the coaxial overlapping of different optical eddies is realized for generating composite eddies. The invention satisfies the coaxality and high diffraction efficiency of different optical eddies. In addition, because the method can increase the storage capacity of the optical eddies through changing the incidence angle of the reference light, the composite eddy generation method of the invention is simple and is easy to regulate, and in addition, the obtained composite eddies have various types.

Description

technical field [0001] The invention relates to a method and device for generating a composite optical vortex, which is a method of coaxial superposition of multiple vortices by using an angle-multiplexed volume holographic storage method, and generates a new complex vortex through the superposition of an optical vortex and an optical vortex. spin method. Background technique [0002] Due to its unique phase structure and topological properties, optical vortex has attracted extensive attention in the fields of basic research and applied research in recent decades. In the field of optics, if there is a phase singularity in the center of the optical wave field, and the phase spirals continuously around the singularity, the wavefront of the light wave will rotate in a spiral manner around a line in the direction of propagation, forming a spiral wavefront. It is very similar to the vortex phenomenon in the fluid, so this kind of light wave is called "Optical Vortices". [0003...

Claims

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Application Information

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IPC IPC(8): G21K1/00G03H1/12G11B7/0065
Inventor 杨德兴李海莲赵建林
Owner HAIAN LANBO
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