Unlock instant, AI-driven research and patent intelligence for your innovation.

Device and method for generating mixed-order Poincare light beam

A technology of mixing orders and light beams, applied in optics, optical components, instruments, etc., can solve problems such as complex optical path structure and large transmission loss, and achieve the effect of simple device structure, easy purchase, and strong device adjustability

Pending Publication Date: 2022-02-11
四川中科朗星光电科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both the interferometry and the grating method can generate mixed-order Poincaré beams, but the interferometry often has a complex optical path structure, and generally requires the use of a spiral phase plate or a spatial light modulator to additionally modulate the phase; while the grating method generally has multiple orders of diffraction , so there is a large transmission loss

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
  • Device and method for generating mixed-order Poincare light beam
  • Device and method for generating mixed-order Poincare light beam
  • Device and method for generating mixed-order Poincare light beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Said laser 1, quarter wave plate one 2, q plate one 3, polarization beam splitter 4, half wave plate 5, quarter wave plate two 6, q plate two 7 and CCD camera 8 are installed between on the same level.

Embodiment 2

[0039] The fast axis direction of the quarter-wave plate-2 is 45 degrees.

[0040] The working principle of the present invention is: firstly laser 1 sends the Gaussian beam of horizontal linear polarization during use; The optical axis space change period whose value is q1 converts the right-handed polarized Gaussian beam into a left-handed polarized vortex beam, and the vortex beam has a topological charge of 2q1; the beam passes through the polarizing beam splitter 4 to generate a horizontally linearly polarized vortex beam; The light beam passes through the half-wave plate 5, and the fast axis direction of the half-wave plate 5 is θ, producing a 2θ polarization direction vortex beam; When the fast axis directions of wave plate 2 6 and half-wave plate 5 are both horizontal, the polarization direction of the vortex beam is still in the horizontal direction; the light beam passes through q plate 2 7, and q plate 1 3 has an optical axis space variation with a value of q2 peri...

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 invention discloses a device and a method for generating a mixed-order Poincare light beam. The device comprises a laser, a first quarter-wave plate, a first q plate, a polarizing beam splitter, a half-wave plate, a second quarter-wave plate, a second q plate and a CCD (Charge Coupled Device) camera. According to the invention, a common polarization device is used, and the used device is easy to purchase and is easier to implement; wherein both the transmission component and the reflection component of the polarizing beam splitter can be used for generating mixed-order Poincare light beams, and the device is high in adjustability; according to the method, the device is simple in structure, a spatial light modulator or a grating does not need to be used, and the mixed-order Poincare light beam is generated through the two q pieces; the device has high flexibility and operability, the half-wave plate and the quarter-wave plate can be rotated, and the polarization state of the output mixed-order Poincare light beam can be conveniently adjusted.

Description

technical field [0001] The invention relates to the technical field of laser polarization modulation, in particular to a device and method for generating mixed-order Poincaré beams. Background technique [0002] In recent years, vector beams with special polarization and vortex properties have received more and more attention. The vector light beam can carry the polarization information and the helical phase information of the light at the same time, which is due to the fact that the vector light field is the result of the coupling of the photon's spin angular momentum and orbital angular momentum. Vector light fields can be generated by various methods such as conical Brewster prisms, interferometers, subwavelength gratings, and q-plates, and are used in many fields such as optical manipulation, optical communication, and high-resolution imaging. [0003] The polarization state of a light field can usually be expressed on the corresponding Poincaré sphere. The mixed-order...

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
IPC IPC(8): G02B27/28
CPCG02B27/286G02B27/283
Inventor 杨博罗达金宋伟红
Owner 四川中科朗星光电科技有限公司