CN115826224A - Scalar vortex light beam generation system and method based on holographic technology - Google Patents
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Abstract
The invention relates to a scalar vortex light beam generation system and method based on holographic technology, wherein the system comprises: a laser light source for generating laser light; the polarization beam splitter prism is used for splitting laser generated by the laser light source into signal light and reference light; the adjusting system comprises a half-wave plate, a quarter-wave plate, a first polarizing plate, a fan-shaped slit, a first steering device and a second steering device, and is used for adjusting the phase of the signal light to obtain scalar vortex light beams of different orders by adjusting the rotating speed ratio between the half-wave plate and the fan-shaped slit through the first steering device and the second steering device; and the holographic recording material is used for recording the incident scalar vortex light beam, and the signal light and the reference light are mutually and perpendicularly incident into the holographic recording material. Scalar vortex beams of different orders can be flexibly prepared, and meanwhile, the holographic material is simple in manufacturing process and low in cost.
Description
Technical Field
The application relates to the technical field of holographic technology and special light field generation, in particular to a scalar vortex light beam generation system and method based on the holographic technology.
Background
A vortex beam, also called a spiral beam, refers to a beam with vortex properties. A vortex beam is a special laser beam with different characteristics than a normal gaussian beam. In a broad sense, the vortex beam includes two broad categories, a phase vortex beam and a polarization vortex beam.
Various methods exist to obtain a scalar vortex beam. For example, a scalar vortex beam is generated using a mode conversion method. However, the optical structure of the method is relatively complex, the device is difficult to prepare, and the type and parameters of the scalar vortex light beam are difficult to control. Also, a scalar vortex beam can be generated by a computer-generated hologram method, in which a fork-shaped grating or a spiral-shaped grating formed by interference of an eddy current rotation and a plane wave or a spherical wave, a spiral phase plate having a transparent plate with a spiral thickness profile, and a super-surface as an equivalent two-dimensional device are formed by using a hologram. But only scalar vortex beams of a specific topological charge can be generated using these methods. Thus, different optics need to be machined to produce scalar vortex beams of different topological loads. The former two require the use of relatively expensive devices or equipment, and the latter two require high manufacturing techniques. And the like, there are many limitations in generating a scalar vortex beam, such as complicated optical structure, large system size, high cost, and complicated processing technology.
Disclosure of Invention
In view of the above problems, the present application provides a system and a method for generating a scalar vortex light beam based on a holographic technique, which solve the problems of complex optical structure, large system volume, high cost, complex processing technology, and the like in the existing method for generating a scalar vortex light beam.
To achieve the above object, the inventors provide a scalar vortex beam generation system based on holographic technique, comprising:
a laser light source for generating laser light;
the polarization beam splitter prism is used for splitting laser generated by the laser light source into signal light and reference light;
a reference optical path for conveying the reference light;
a signal light path for conveying the signal light;
the adjusting system comprises a half-wave plate, a quarter-wave plate, a first polaroid, a fan-shaped slit, a first steering device and a second steering device, wherein the half-wave plate, the quarter-wave plate, the first polaroid and the fan-shaped slit are sequentially arranged on a signal light path, the first steering device is used for rotating the half-wave plate, the second steering device is used for rotating the fan-shaped slit, and the adjusting system is used for adjusting the phase of the signal light to obtain scalar vortex light beams of different orders by adjusting the rotating speed ratio between the half-wave plate and the fan-shaped slit through the first steering device and the second steering device;
and the holographic recording material is used for recording the incident scalar vortex light beam, and the signal light and the reference light are perpendicularly incident to the holographic recording material.
In some embodiments, the reference optical path includes a first mirror for injecting reference light into the holographic recording material;
the signal light path includes a second mirror for injecting signal light into the holographic recording material.
In some embodiments, the laser system further comprises a beam expanding system, wherein the beam expanding system comprises a first lens, the first lens is arranged between the laser light source and the polarization beam splitter prism, and the first lens is used for expanding the laser light generated by the laser light source.
In some embodiments, the laser system further comprises a spatial filter disposed between the laser light source and the first lens, the spatial filter for filtering the laser light generated by the laser light source.
In some embodiments, the liquid crystal display further comprises a second polarizer and a third polarizer, wherein the second polarizer is arranged in the signal light path, and the third polarizer is arranged in the reference light path.
In some embodiments, the opening angle a of the fan-shaped slits ranges from 5 ° ≧ a >0 °.
In some embodiments, further comprising an imaging system comprising a camera for image capture of the scalar vortex beam reproduced by the holographic recording material.
In some embodiments, the imaging system further comprises a 4f imaging system, the 4f imaging system disposed between the holographic recording material and the camera.
In some embodiments, the holographic recording material may be bulk PQ/PMMA material
Still provide another technical scheme: a scalar vortex light beam generation method based on a holographic technology, the method being used for the scalar vortex light beam generation system based on the holographic technology, the method specifically comprising the following steps:
the laser light source generates laser;
the polarization beam splitter prism splits laser generated by the laser light source into reference light and signal light;
the reference light path transmits the reference light to the holographic recording material;
the signal light path transmits the signal light to the holographic recording material;
the adjusting system adjusts the rotation speed ratio between the half-wave plate and the fan-shaped slit through the first steering device and the second steering device and adjusts the phase of the signal light by matching with the quarter-wave plate and the first polaroid to obtain scalar vortex light beams of different orders;
the holographic recording material records the incident scalar vortex beam.
In some embodiments, further comprising the steps of:
image capture of a scalar vortex beam reproduced by the holographic recording material by a camera.
Different from the prior art, according to the technical scheme, when scalar vortex beams need to be generated, laser is generated through a laser light source, beam splitting is carried out through a polarization beam splitter prism to obtain signal light and reference light, then the reference light is sent to the holographic recording material through a reference light path, and the signal light is sent to the holographic recording material through a signal light path; wherein the signal light and the reference light are incident perpendicularly to each other into the holographic recording material. The phase-change-based phase-change optical disc comprises a signal light path, a half-wave plate, a quarter-wave plate, a first polaroid and a fan-shaped slit, wherein the signal light path is provided with an adjusting system, the half-wave plate, the quarter-wave plate, the first polaroid and the fan-shaped slit are arranged on the signal light path, phase change is introduced through the half-wave plate, the quarter-wave plate and the polaroid, light beams are filtered through the fan-shaped slit, the phase is regulated and controlled, meanwhile, the half-wave plate and the fan-shaped slit are rotated through a first rotating device and a second rotating device, scalar vortex light beams with different orders can be generated, and finally, information passing through the fan-shaped slit is recorded in real time through a holographic recording material with the capacity of recording amplitude and phase information as a recording medium. The method can flexibly prepare scalar vortex beams of different orders, simultaneously has simple manufacturing process and low cost of the holographic material, can solve the problems of large system volume, high preparation cost and the like of the traditional scalar vortex beam generation method by using an optical device made of the material, and can achieve the effect of processing length in the preparation process due to the response characteristic of the material.
The above description of the present invention is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clearly understood by those skilled in the art, the present invention may be further implemented according to the content described in the text and drawings of the present application, and in order to make the above objects, other objects, features, and advantages of the present application more easily understood, the following description is made in conjunction with the detailed description of the present application and the drawings.
Drawings
The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of particular embodiments of the present application, as well as others related thereto, and are not to be construed as limiting the application.
In the drawings of the specification:
FIG. 1 is a schematic diagram of a scalar vortex beam generation system based on holographic technique according to an embodiment;
FIG. 2 is a schematic diagram of another embodiment of a holographic-based scalar vortex beam generation system;
FIG. 3 is a schematic diagram of another embodiment of a holographic-based scalar vortex beam generation system;
FIG. 4 is a schematic diagram of another embodiment of a holographic-based scalar vortex beam generation system;
FIG. 5 is a schematic diagram of another embodiment of a holographic-based scalar vortex beam generation system;
fig. 6 is a schematic flowchart of a method for generating a scalar vortex beam based on a holographic technique according to an embodiment.
The reference numerals referred to in the above figures are explained below:
1. a laser light source is arranged on the base plate,
2. a polarization beam splitter prism,
3. a first half-wave plate for generating a first half-wave,
4. a quarter-wave plate is arranged on the upper surface of the substrate,
5. a first polarizing plate having a first polarizer and a second polarizer,
6. a fan-shaped slit is arranged on the upper surface of the shell,
7. a holographic recording material comprising a holographic recording layer,
8. a first lens for a first lens to be used,
9. the spatial filter is used for filtering the signal to be filtered,
10a, a first mirror;
10b and a second reflecting mirror 10b,
11. a second polarizing plate for reflecting light from the first polarizing plate,
12. a third polarizing plate for polarizing the light emitted from the light emitting element,
13. a second half-wave plate is arranged on the first half-wave plate,
14. the position of the camera is determined by the camera,
15. 4f imaging system.
Detailed Description
In order to explain in detail possible application scenarios, technical principles, practical embodiments, and the like of the present application, the following detailed description is given with reference to the accompanying drawings in conjunction with the listed embodiments. The embodiments described herein are merely for more clearly illustrating the technical solutions of the present application, and therefore, the embodiments are only used as examples, and the scope of the present application is not limited thereby.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or related to other embodiments specifically defined. In principle, in the present application, the technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution as long as there is no technical contradiction or conflict.
Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the use of relational terms herein is intended only to describe particular embodiments and is not intended to limit the present application.
In the description of the present application, the term "and/or" is a expression for describing a logical relationship between objects, meaning that three relationships may exist, for example a and/or B, meaning: there are three cases of A, B, and both A and B. In addition, the character "/" herein generally indicates that the former and latter associated objects are in a logical relationship of "or".
In this application, terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Without further limitation, in this application, the use of "including," "comprising," "having," or other similar expressions in phrases and expressions of "including," "comprising," or "having," is intended to cover a non-exclusive inclusion, and such expressions do not exclude the presence of additional elements in a process, method, or article that includes the recited elements, such that a process, method, or article that includes a list of elements may include not only those elements but also other elements not expressly listed or inherent to such process, method, or article.
As is understood in the examination of the guidelines, the terms "greater than", "less than", "more than" and the like in this application are to be understood as excluding the number; the expressions "above", "below", "within" and the like are understood to include the present numbers. In addition, in the description of the embodiments of the present application, "a plurality" means two or more (including two), and expressions related to "a plurality" similar thereto are also understood, for example, "a plurality of groups", "a plurality of times", and the like, unless specifically defined otherwise.
In the description of the embodiments of the present application, spatially relative expressions such as "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used, and the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the specific embodiments or drawings and are for convenience of description of the specific embodiments of the present application or for ease of understanding by the reader only, and do not indicate or imply that a device or component referred to must have a specific position, a specific orientation, or be configured or operated in a specific orientation and therefore should not be construed as limiting the embodiments of the present application.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and "disposed" used in the description of the embodiments of the present application are to be construed broadly. For example, the connection can be a fixed connection, a detachable connection, or an integrated arrangement; it can be a mechanical connection, an electrical connection, or a communication connection; they may be directly connected or indirectly connected through an intermediate; which may be communication within two elements or an interaction of two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains in accordance with specific situations.
Referring to fig. 1-5, the present embodiment provides a scalar vortex beam generating system based on holographic technique, which includes:
a laser light source 1, wherein the laser light source 1 is used for generating laser;
the polarization beam splitter prism 2 is used for splitting laser generated by the laser light source 1 into signal light and reference light;
a reference optical path for conveying the reference light;
a signal light path for conveying the signal light;
the adjusting system comprises a first half-wave plate 3, a quarter-wave plate 4, a first polarizing plate 5, a fan-shaped slit 6, a first steering device and a second steering device, wherein the holographic recording material 7, the quarter-wave plate 4, the first polarizing plate 5 and the fan-shaped slit 6 are sequentially arranged on a signal light path, the first steering device is used for rotating the first half-wave plate 3, the second steering device is used for rotating the fan-shaped slit 6, and the adjusting system is used for adjusting the phase of the signal light to obtain scalar vortex beams of different orders by adjusting the rotating speed ratio between the holographic recording material 7 and the fan-shaped slit 6 through the first steering device and the second steering device;
and a hologram recording material 7, wherein the hologram recording material 7 is used for recording the incident scalar vortex beam, and the signal light and the reference light are perpendicularly incident to the hologram recording material 7.
When scalar vortex light beams need to be generated, laser is generated through a laser light source 1, beam splitting is carried out through a polarization beam splitter prism 2 to obtain signal light and reference light, then the reference light is sent to a holographic recording material 7 through a reference light path, and the signal light is sent to the holographic recording material 7 through a signal light path; the signal light and the reference light are incident perpendicularly to each other on the hologram recording material 7. An adjusting system is arranged on a signal light path, the first half-wave plate 3, the quarter-wave plate 4, the first polarizing plate 5 and the fan-shaped slit 6 are arranged on the signal light path, phase change is introduced through the holographic recording material 7, the quarter-wave plate 4 and the first polarizing plate 5, light beams are filtered through the fan-shaped slit 6, phase regulation and control are achieved, meanwhile, the first half-wave plate 3 and the second rotating device are rotated through the first rotating device to rotate the fan-shaped slit 6, scalar vortex light beams of different orders can be generated, and finally, information passing through the fan-shaped slit 6 is recorded in real time by taking the holographic recording material 7 with the capacity of recording amplitude and phase information as a recording medium. The method can flexibly prepare scalar vortex beams of different orders, simultaneously has simple manufacturing process and low cost of the holographic material, can solve the problems of large system volume, high preparation cost and the like of the traditional scalar vortex beam generation method by using an optical device made of the material, and can achieve the effect of processing length in the preparation process due to the response characteristic of the material. The holographic recording material 7 is used as a medium for generating scalar vortex beams, and the scalar vortex beams are recorded into the holographic recording material 7 through a real-time recording system which is designed by only adopting common components. The holographic recording material 7 recorded with the scalar vortex beam can be used as one device, and has the advantages of small size, low preparation cost, short processing time and the like. The device can generate scalar vortex light beams of any order, reduces the cost on devices and materials, and develops a system which is simple and compact.
For example, when an l-order scalar vortex light beam needs to be prepared, the rotation speed ratio between the first half-wave plate 3 and the fan-shaped slit 6 is adjusted to 1. And scalar vortex beams of other orders need to be obtained only by correspondingly adjusting the rotation speed ratio between the first half-wave plate 3 and the fan-shaped slit 6. Wherein the sign of the rotational speed identifies the direction of rotation, the positive sign identifies the counterclockwise rotation, and the negative sign identifies the clockwise rotation.
Referring to fig. 1-5, in some embodiments, the reference light path includes a first mirror 10a, the first mirror 10a being configured to inject reference light into the holographic recording material 7;
the signal optical path includes a second mirror 10b, and the second mirror 10b is used for injecting signal light into the holographic recording material 7.
To facilitate the reference light and the signal light to perpendicularly enter the hologram recording material 7. The signal light and the reference light are made to enter the hologram recording material 7 perpendicularly to each other by reflecting the reference light by the first reflecting mirror 10a provided on the reference optical path and reflecting the signal light by the second reflecting mirror 10b provided on the signal optical path. In other embodiments, the reference light split by the polarization beam splitter prism may be incident linearly on the holographic recording material 7, and the signal light may be incident on the holographic recording material 7 by two mirrors so that the reference light and the signal light are incident perpendicularly to each other on the holographic recording material 7, or the signal light split by the polarization beam splitter prism may be incident linearly on the holographic recording material 7 and the reference light may be incident on the holographic recording material 7 by two mirrors so that the reference light and the signal light are incident perpendicularly to each other on the holographic recording material 7.
Referring to fig. 1 to 5, in some embodiments, the apparatus further includes a beam expanding system, where the beam expanding system includes a first lens 8, the first lens 8 is disposed between the laser light source 1 and the polarization beam splitter prism 2, and the first lens 8 is configured to expand laser light generated by the laser light source 1. The laser generated by the laser source 1 can be expanded and collimated by the first lens 8. The laser device further comprises a spatial filter 9, wherein the spatial filter 9 is arranged between the laser light source 1 and the first lens 8, and the spatial filter 9 is used for filtering laser light generated by the laser light source 1. The laser light is removed from the wavefront distortion caused by dust adhering to the laser light source 1 or the mirror surface.
Referring to fig. 2-5, in some embodiments, the liquid crystal display further includes a second polarizer 11 and a third polarizer 12, where the second polarizer 11 is disposed in the signal path and the third polarizer 12 is disposed in the reference path.
In some embodiments, an imaging system is further included, the imaging system comprising a camera 14, the camera 14 being used for image capture of the scalar vortex beam reproduced by the holographic recording material 7. Image capture of the scalar vortex beam that can be reproduced by the holographic recording material 7 by means of the camera 14, wherein in order to improve the quality of the captured image the imaging system further comprises a 4f imaging system 15, said 4f imaging system 15 being arranged between said holographic recording material 7 and the camera 14. The 4f imaging system 15 is formed by combining a second lens and a third lens. The quality of the light beam recorded and reproduced on the hologram recording material 7 can be greatly improved. Wherein the camera 14 employs a CCD camera 14.
In some embodiments, the laser light source 1 employs a fundamental mode TEM with a wavelength of 532nm 00 A green laser.
In some embodiments, the fan-shaped slits 6 are made of a coated aluminum alloy material. The coated aluminum alloy material has the characteristics of difficult deformation and difficult light transmission.
In some embodiments, the opening angle a of the fan-shaped slit 6 ranges from: 5 degrees is more than or equal to a and more than 0 degrees; the smaller the opening angle of the fan-shaped slit 6, the smoother the change in the phase plane of the resulting scalar vortex beam, and the higher the accuracy.
Referring to fig. 3-5, in some embodiments, a second half-wave plate 13 is further disposed between the laser source 1 and the polarization beam splitter prism 2, and the laser generated by the laser source 1 passes through the second half-wave plate 13 and then enters the polarization beam splitter prism 2.
In some embodiments, holographic recording material 7 employs holographic recording material PQ/PMMA, which is made from Phenanthrenequinone (PQ), 2-Azobisisobutyronitrile (AIBN), and Methyl Methacrylate (MMA) materials.
Referring to fig. 6, in another embodiment, a scalar vortex beam generation method based on the holographic technology is used in the scalar vortex beam generation system based on the holographic technology in the above embodiment, and the method specifically includes the following steps:
step 610: the laser light source generates laser;
step 620: the polarization beam splitter prism splits laser generated by the laser light source into reference light and signal light;
step 630: the reference light path transmits the reference light to the holographic recording material;
step 640: the signal light path transmits the signal light to the holographic recording material;
step 650: the adjusting system adjusts the rotation speed ratio between the half-wave plate and the fan-shaped slit through the first steering device and the second steering device and adjusts the phase of the signal light by matching with the quarter-wave plate and the first polaroid to obtain scalar vortex light beams of different orders;
step 660: the holographic recording material records the incident scalar vortex beam.
When scalar vortex light beams need to be generated, laser is generated through a laser light source, beam splitting is carried out through a polarization beam splitter prism to obtain signal light and reference light, then the reference light is sent to the holographic recording material through a reference light path, and the signal light is sent to the holographic recording material through a signal light path; wherein the signal light and the reference light are incident perpendicularly to each other into the holographic recording material. The phase-change-based phase-change optical disc comprises a signal light path, a half-wave plate, a quarter-wave plate, a first polaroid and a fan-shaped slit, wherein the signal light path is provided with an adjusting system, the half-wave plate, the quarter-wave plate, the first polaroid and the fan-shaped slit are arranged on the signal light path, phase change is introduced through the half-wave plate, the quarter-wave plate and the polaroid, light beams are filtered through the fan-shaped slit, the phase is regulated and controlled, meanwhile, the half-wave plate and the fan-shaped slit are rotated through a first rotating device and a second rotating device, scalar vortex light beams with different orders can be generated, and finally, information passing through the fan-shaped slit is recorded in real time through a holographic recording material with the capacity of recording amplitude and phase information as a recording medium. The method can flexibly prepare scalar vortex beams of different orders, simultaneously has simple manufacturing process and low cost of holographic materials, can solve the problems of large system volume, high preparation cost and the like of the traditional scalar vortex beam generation method by using optical devices made of the materials, and can achieve the effect of short processing time in the preparation process due to the response characteristics of the materials.
The holographic recording material is used as a medium for generating scalar vortex beams, and the scalar vortex beams are recorded in the holographic recording material through a real-time recording system which is designed by only adopting common components. The holographic recording material recorded with the scalar vortex beam can be used as a device, and has the advantages of small size, low preparation cost, short processing time and the like. The device can generate scalar vortex light beams of any order, reduces the cost on devices and materials, and is simple and compact in the developed system.
For example, when an l-order scalar vortex beam needs to be prepared, the l-order scalar vortex beam can be prepared only by adjusting the rotation speed ratio between the first half-wave plate and the fan-shaped slit to 1. And scalar vortex beams of other orders need to be obtained only by correspondingly adjusting the rotation speed ratio between the first half-wave plate and the fan-shaped slit. Wherein the sign of the rotational speed identifies the direction of rotation, the positive sign identifies the counterclockwise rotation, and the negative sign identifies the clockwise rotation.
In some embodiments, further comprising the steps of:
image capture of a scalar vortex beam reproduced by the holographic recording material by a camera.
An image capture of the scalar vortex beam reproduced by the holographic recording material may be by a camera.
Finally, it should be noted that, although the above embodiments have been described in the text and drawings of the present application, the scope of the patent protection of the present application is not limited thereby. All technical solutions which are generated by replacing or modifying the equivalent structure or the equivalent flow according to the contents described in the text and the drawings of the present application, and which are directly or indirectly implemented in other related technical fields, are included in the scope of protection of the present application.
Claims (10)
1. A holographic-based scalar vortex beam generation system, comprising:
a laser light source for generating laser light;
the polarization beam splitter prism is used for splitting laser generated by the laser light source into signal light and reference light;
a reference optical path for conveying the reference light;
a signal light path for conveying the signal light;
the adjusting system comprises a half-wave plate, a quarter-wave plate, a first polaroid, a fan-shaped slit, a first steering device and a second steering device, wherein the half-wave plate, the quarter-wave plate, the first polaroid and the fan-shaped slit are sequentially arranged on a signal light path, the first steering device is used for rotating the half-wave plate, the second steering device is used for rotating the fan-shaped slit, and the adjusting system is used for adjusting the phase of the signal light to obtain scalar vortex light beams of different orders by adjusting the rotating speed ratio between the half-wave plate and the fan-shaped slit through the first steering device and the second steering device;
and the holographic recording material is used for recording the incident scalar vortex light beam, and the signal light and the reference light are perpendicularly incident to the holographic recording material.
2. The holographic-based scalar vortex beam generation system of claim 1, wherein the reference optical path comprises a first mirror for injecting reference light into the holographic recording material;
the signal light path includes a second mirror for injecting signal light into the holographic recording material.
3. The holography-based scalar vortex beam generation system of claim 1, further comprising a beam expanding system, wherein the beam expanding system comprises a first lens, the first lens is arranged between the laser light source and the polarization splitting prism, and the first lens is used for expanding laser light generated by the laser light source.
4. The holographic based scalar vortex beam generation system of claim 2, further comprising a spatial filter disposed between the laser light source and the first lens, the spatial filter for filtering laser light produced by the laser light source.
5. The holographic based scalar vortex beam generation system of claim 1, further comprising a second polarizer and a third polarizer, the second polarizer disposed in a signal optical path and the third polarizer disposed in a reference optical path.
6. The holographic-based scalar vortex beam generation system of claim 1, wherein an opening angle a of said fan-shaped slit ranges from 5 ° ≧ a >0 °.
7. The holographic technology based scalar vortex beam generation system of claim 1, further comprising an imaging system including a camera for image capture of the scalar vortex beam reproduced from the holographic recording material.
8. The holographic based scalar vortex beam generation system of claim 7, wherein the imaging system further comprises a 4f imaging system, the 4f imaging system disposed between the holographic recording material and a camera.
9. A holographic based scalar vortex beam generation method, for use in the holographic based scalar vortex beam generation system of any of claims 1-8, the method comprising the steps of:
the laser light source generates laser;
the polarization beam splitter prism splits laser generated by the laser source into reference light and signal light;
the reference light path transmits the reference light to the holographic recording material;
the signal light path transmits the signal light to the holographic recording material;
the adjusting system adjusts the rotation speed ratio between the half-wave plate and the fan-shaped slit through the first steering device and the second steering device and adjusts the phase of the signal light by matching with the quarter-wave plate and the first polaroid to obtain scalar vortex light beams of different orders;
the holographic recording material records the incident scalar vortex beam.
10. The holographic based scalar vortex beam generation method of claim 9, further comprising the steps of:
image capture of a scalar vortex beam reproduced by the holographic recording material by a camera.
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| CN202211558669.3A CN115826224A (en) | 2022-12-06 | 2022-12-06 | Scalar vortex light beam generation system and method based on holographic technology |
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