Method for preparing various mixed Poincare ball beams based on vortex half-wave plate
A half-wave plate and light beam technology, which is applied in the fields of physics and micro-nano optics, can solve the problems of limited beam preparation range, poor integration, and many types of customized optical devices, and achieve novel technology, low cost, and high energy conversion efficiency. Effect
Pending Publication Date: 2022-06-24
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
This method can overcome the problems existing in the traditional method such as complex optical path preparation, poor integration, many types of customized optical devices, and limited beam preparation range.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0050] specific implementation
[0051] The present invention is based on a method for preparing a variety of mixed Poincaré sphere beams based on a vortex half-wave plate. The pass-through vortex half-wave plate and the quarter-wave plate are used as experimental objects, and the implementation object is a vortex half-wave plate. The specific implementation steps as follows:
[0052] First, design an experimental optical path such as figure 2 shown. The beam emitted by the laser (NEWPORT N-LHP-151) is expanded and collimated by a telescope system composed of two lenses, and then polarized by a Glan-Taylor prism (GLP) to obtain a high-purity horizontal linearly polarized beam. Part I is used to generate linearly polarized vortex beams. Quarter wave plate (QP 1 ) and (QP 2 ) with the same fast axis direction as -π / 4, the vortex half-wave plate (VHP 1 ) order m 1 =1, can generate horizontal linear polarization topological charge number l=m 1 Vortex light. When the fast...
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
Login to View More Abstract
The invention relates to a method for preparing various mixed Poincare spherical beams based on a vortex half-wave plate. On the basis of a high-order Poincare sphere, a linear polarization vortex phase is introduced to obtain a mixed Poincare sphere expression. The invention provides a preparation method of a column vector vortex beam at any position on a multi-mixed-order Poincare sphere based on a vortex half-wave plate. Firstly, a vortex half-wave plate and a quarter-wave plate are used for generating linear polarization vortex light; secondly, the polarization direction and the polarization ellipticity of the vortex light are adjusted through the half-wave plate and the quarter-wave plate, so that the vortex light enters the other vortex half-wave plate, and a vortex light beam with a cylindrical vector polarization state is generated; the light beam corresponds to one point on the mixed Poincare sphere, and column vector vortex light at any position on the mixed Poincare sphere can be generated by rotating the fast axis of the wave plate; and finally, the multi-mixed Poincare ball is prepared by cascading the vortex half-wave plate. According to the method, independent modulation of topological charges and polarization orders can be realized, and a certain value is provided for design of an integrated column vector vortex light source with a flexible and adjustable mode.
Description
technical field [0001] The invention relates to a method for preparing a variety of mixed Poincaré sphere light beams based on a vortex half-wave plate. The existing traditional methods are all based on spatial light modulators to prepare vector vortex lights on the basis of interferometers, or use non-interference. The method combines custom optical elements such as spatial light modulators, helical phase plates, and metasurfaces to generate cylindrical vector vortex light. The invention mainly relates to micro-nano optics and physics, can reduce the types of customized optical components, simplify the preparation optical path system, expand the preparation range of the column vector vortex beam preparation, and has certain value for the design of an integrated column vector vortex light source with flexible and adjustable modes . [0002] technical background [0003] The polarization and phase of the light beam are the basic properties of the light field. Since 1969, the ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/28
CPCG02B27/286
Inventor 刘通孙汝生任元王卫杰刘政良李瑞健韩放
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV