Polygonal perfect vortex light preparation and control method based on high-order cross phase
A technology of cross-phase and vortex light, which is applied in optics, optical components, instruments, etc., can solve the problems of singleness, high precision of optical path, and reduce alignment of optical path, so as to reduce cost, simplify optical path, and reduce the accuracy of optical path required effect
Pending Publication Date: 2021-07-02
PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV
View PDF4 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] The technical problem solved by the present invention is: Aiming at the relatively single method of preparing and manipulating perfect vortex light at present, which requires high precision of the optical path, a method for preparing and manipulating polygonal perfect vortex light based on high-order cross-phase is proposed. The optical path of this method is It is simple and flexible, and can adjust the order and intensity of the cross-phase according to the requirements to prepare perfect vortex beams of different shapes, and control the symmetry, light intensity distribution, and orbital angular momentum purity of the perfect vortex beam. Due to the perfect vortex beam Fourier transform only needs one lens, this method can greatly save experimental equipment and space, and greatly reduce the requirements for optical path alignment
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
[0042] specific implementation plan
[0043] The implementation object of the present invention is a spatial light modulator, and the specific implementation steps are as follows:
[0044] (1) Preparation scheme of polygonal perfect vortex light
[0045] The hologram of perfect vortex light is multiplied by the high-order cross-phase multiplied by the multi-parameter joint control technology, and the blazed grating is superimposed to obtain a holographic pattern that can be precisely controlled, and loaded into the spatial light modulator (6), laser generator (1 ) to generate stable Gaussian light, which passes through the linear polarizer (2) and the half-wave plate (3) in turn, and then irradiates the spatial light modulator (6) through the beam collimation system composed of the lens (4) and the lens (5). , after complex amplitude modulation, the outgoing light passes through the lens (7) for Fourier transform and then enters the CCD camera (9) through the diaphragm (8). P...
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 polygonal perfect vortex light preparation and control method based on a high-order cross phase. The perfect vortex light is a vortex light field with the light beam radius irrelevant to the topological charge number, the cross phase is a special light field phase structure, the perfect vortex light can be regulated and controlled into a polygon, and the third order or above is called a high-order cross phase. Firstly, a hologram sample carrying perfect vortex light information and a cross phase is prepared by utilizing a multi-parameter combined regulation and control technology and is loaded to a spatial light modulator, a beam of linear polarization Gaussian light is irradiated to the spatial light modulator for complex amplitude modulation, emergent light passes through a convex lens, and polygonal perfect vortex light can be obtained on a rear focal plane of the lens; and the shape and light intensity distribution of the perfect vortex light can be controlled by adjusting high-order cross phase parameters. The method is simple in light path and high in flexibility, belongs to the field of vortex light control, and can be applied to polygonal perfect vortex light preparation and control and optical control of microscopic particles.
Description
technical field [0001] The invention relates to a method for preparing and manipulating polygonal perfect vortex light based on high-order cross-phase. Perfect vortex light is a kind of vortex light field whose beam radius has nothing to do with the topological charge. The cross phase is a special phase structure of the light field. The light spot is adjusted to be a polygon. First, a holographic pattern carrying perfect vortex light information and cross-phase is prepared by using multi-parameter joint control technology, and loaded into the spatial light modulator, a beam of linearly polarized Gaussian light is irradiated to the spatial light modulator for complex amplitude modulation, and the outgoing light passes through a convex lens Finally, the polygonal perfect vortex light can be obtained on the back focal plane of the convex lens, and the high-order cross-phase can be used to prepare the perfect vortex light through the spatial light modulator, and manipulate its sh...
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 IPC IPC(8): G02B27/09
CPCG02B27/0927G02B27/0955G02B27/0944
Inventor 任元丁友王琛刘通陈琳琳邱松刘政良李瑞健
Owner PLA PEOPLES LIBERATION ARMY OF CHINA STRATEGIC SUPPORT FORCE AEROSPACE ENG UNIV