Optical field reconstruction system and method for generating vortex beams by coherent combination of fiber lasers

A vortex beam, coherent synthesis technology, applied in optics, optical components, instruments, etc., can solve problems such as disadvantages and less research on light field distribution characteristics

Active Publication Date: 2022-04-12
NAT UNIV OF DEFENSE TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technical route for generating vortex beams still has shortcomings in terms of optical field characterization, which leads to less research on the optical field distribution characteristics of vortex beams generated based on fiber laser coherent synthesis, which is not conducive to the further development of this technical route.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical field reconstruction system and method for generating vortex beams by coherent combination of fiber lasers
  • Optical field reconstruction system and method for generating vortex beams by coherent combination of fiber lasers
  • Optical field reconstruction system and method for generating vortex beams by coherent combination of fiber lasers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] refer to figure 1 The invention provides an optical field reconstruction system for coherently combining fiber lasers to generate a vortex beam, including a vortex beam generation subsystem and an optical field reconstruction subsystem.

[0056] The vortex beam generating subsystem includes a seed source 1, a pre-amplifier 2, a fiber beam splitter 3, a phase modulator array 4, an optical fiber amplification module 5, a collimator array 6, a high reflection mirror 7, a beam splitter 8, an array Beam processing module 9 , photodetection module 10 and control system 11 .

[0057] The seed laser output from the seed source 1 is pre-amplified by the pre-amplifier 2 and then transmitted to the fiber splitter 3 . The optical fiber beam splitter 3 has N output ends, the seed laser light output by the seed source 1 is divided into N beams of unit beams by the optical fiber beam splitter 3, and the output ends of each optical fiber beam splitter 3 are respectively connected to a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention proposes a optical field reconstruction system and method for coherently combining fiber lasers to generate vortex beams, including a vortex beam generation subsystem and an optical field reconstruction subsystem, and coherently combining and generating vortex beams according to detected light intensity signals. The light intensity distribution of the beam, and the phase distribution of the vortex beam generated by the coherent combination are calculated at the same time, so as to realize the light field characterization of the vortex beam generated by the coherent combination. The present invention makes the light field reconstruction method based on fiber laser coherent synthesis to generate vortex beams compatible with the vortex beam generation system, and can realize the generation of vortex beams and the light field reconstruction based on coherent synthesis to generate vortex beams through a set of systems . The invention overcomes the difficulty in characterizing the light field of the vortex beam generated by coherent combination of fiber lasers in the prior technical solutions.

Description

technical field [0001] The invention relates to the technical field of fiber laser coherent combination, in particular to a light field reconstruction method for generating vortex beams based on fiber laser coherent combination. Background technique [0002] With the rapid development of laser and photonics technology, the generation and control of structured light fields with special spatial distributions of amplitude, phase, polarization and coherence have attracted extensive attention from researchers at home and abroad. As a typical structured light field, the vortex light field with circular intensity distribution, spiral phase structure, and orbital angular momentum has become a hot spot in academic research in recent years, revealing many novel physical phenomena and widely used in free space light. Communication, super-resolution optical imaging, laser processing and manufacturing, optical tweezers and other fields. For the special application scenarios of long-dist...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09G02B27/00
CPCG02B27/0955G02B27/0994G02B27/0927G02B27/0012
Inventor 周朴侯天悦马鹏飞马阎星粟荣涛吴坚李灿刘伟姜曼常琦龙金虎常洪祥王涛张嵩司磊许晓军陈金宝
Owner NAT UNIV OF DEFENSE TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap