CN205594238U - Device for generating perfect vortex light beam of fractional order - Google Patents
Device for generating perfect vortex light beam of fractional order Download PDFInfo
- Publication number
- CN205594238U CN205594238U CN201521102637.8U CN201521102637U CN205594238U CN 205594238 U CN205594238 U CN 205594238U CN 201521102637 U CN201521102637 U CN 201521102637U CN 205594238 U CN205594238 U CN 205594238U
- Authority
- CN
- China
- Prior art keywords
- light
- light beam
- convex lens
- fractional order
- advance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Laser Beam Processing (AREA)
Abstract
The utility model relates to a device for generating perfect vortex light beam of fractional order, it produces the device to install the perfect vortex light beam of a fractional order, including a continuous wave laser, continuous wave laser emit light bundle's direction of advance is equipped with the speculum, and the light beam direction of advance after the speculum reflection is equipped with pinhole filter, convex lens I, the polarizer and beam splitting cube in proper order, light beam behind the beam splitting cube is divided into two bundles, a branch of reverberation that is wherein, a branch of transmitted light that is, be equipped with reflective spatial light modulator in the reverberation direction of advance, the light beam that produces after the reflection of reflective spatial light modulator is equipped with analyser, aperture diaphragm, convex lens II and CCD camera through behind the beam splitting cube in proper order in its direction of advance, the utility model discloses can realize the parameter perfect vortex light beam of the online fractional order that freely regulate and control in real time, but wide application in fields such as the manipulation of particle light, optical test.
Description
Technical field
This utility model relates to microgranule light and handles and optical testing art, a kind of fractional order perfection vortex light
The generator of bundle.
Background technology
The aspects such as vortex beams is traped at optics, manipulation fine particle have a wide range of applications.Become information light in recent years
The very important study hotspot in one, field.2004, M.V. Berry system first, comprehensively elaborate fractional order optics
The theoretical basis [J Opt a-Pure Appl Op, 2004,6 (2): 259] of vortex；Subsequently, fractional order vortex beams obtains
Experimental verification [New J Phys, 2004,6 (1): 71].Fractional order vortex beams portability more information amount and carrying
For the particle manipulating more become more meticulous, become the hot subject that the numerous researcher of vortex optical field is competitively studied.
The method producing at present vortex beams is a lot, mainly has mode conversion method, spiral phase plate method and based on spatial light
The calculating holography method etc. of manipulator.The vortex beams bright ring radius that these methods produce increases with the increase of topological charge, this
Characteristic makes vortex beams be difficult to be coupled on a large scale in same optical fiber.2013, Andrey S. Ostrovsky et al. carried
Having gone out the concept of perfect vortex, this vortex beams bright ring radius does not relies on topology charge values [Opt. Lett. 38,534
(2013)], but the method all can produce the extra spuious ring of light with perfect vortex beams.2015, Pravin Vaity etc.
By Bessel-Gauss beams being done Fourier transformation, thus obtain the integer rank perfection vortex [Opt. without the extra ring of light
Lett., 40, 597(2015)】.Recently, utility model patent " produces the two-dimensional encoded phase grating of perfect vortex array "
(Publication No. 104808272A, publication date is 2015.07.29), describes a kind of two-dimensional encoded phase place producing perfect vortex
Grating, by the modulation of this two-dimensional encoded phase grating, can produce on its Fourier transform face simultaneously and multiple carry difference
The perfect vortex array of topological charge.But vortex beams produced by above-mentioned all schemes is integer rank perfection vortex, and such as
What produces the difficult problem urgently to be resolved hurrily that fractional order perfection vortex beams is this field face.
Utility model content
This utility model purpose is the deficiency for solving above-mentioned technical problem, it is provided that a kind of fractional order perfection vortex beams
Generator, it is possible to realizing parameter can the fractional order perfection vortex beams that freely regulates and controls of real-time online.
This utility model be the technical scheme is that by the above-mentioned technical problem of solution
A kind of fractional order perfection vortex beams generator, including a continuous-wave laser；Described continuous-wave laser is sent out
The direction of advance going out light beam is provided with reflecting mirror, is reflected the light beam direction of advance after mirror reflection and is sequentially provided with pinhole filter, convex
Lens I, the polarizer and beam-dividing cube；Light beam after beam-dividing cube is divided into two bundles, the most a branch of for reflection light, Yi Shuwei
Transmission light；Reflection light direction of advance is provided with reflective spatial light modulator, produces after being reflected the reflection of formula spatial light modulator
Raw light beam, after transmission from one meridian to another beam-dividing cube, its direction of advance is sequentially provided with analyzer, aperture, convex lens II and CCD
Camera；
Described reflective spatial light modulator, CCD camera are connected with computer respectively；Described pinhole filter is with convex
Distance between lens I is the focal length of convex lens I；Described reflective spatial light modulator is placed in the front focal plane of convex lens II
On；Described CCD camera is placed on the back focal plane of convex lens II.
Utilize described fractional order perfection vortex beams generator produce fractional order perfection vortex beams method, including with
Lower step:
Step one, computer is utilized to generate containing axicon lens transmittance function and fractional order vortex beams and plane wave interference
Plot of light intensity；Detailed process is as follows:
The electric field of plane wave is expressed as:
Wherein, E0Represent oscillator intensity,kRepresenting wave number, z represents propagation distance；
The electric field impinging perpendicularly on the vortex beams on axicon lens is expressed as:
Wherein,For amplitude constant,For waist radius,mFor topological charge number, take mark；jFor imaginary unit；
The complex amplitude transmittance function of axicon lens is:
In formula,nFor axicon lens Refractive Index of Material,aAngle for the cone angle of axicon lens, i.e. the axicon lens conical surface Yu baseplane；k
For wave number,RFor axicon lens pupil radius；
Vortex beams COMPLEX AMPLITUDE with plane wave interference after axicon lens is:
；
Step 2, combination calculate holographic technique, utilize computer by complex amplitude E1Plot of light intensity write reflection type spatial light
Manipulator；
Step 3, open continuous-wave laser power supply, after the light beam that continuous-wave laser sends is reflected by a reflector, enter
Pinhole filter, then planoconvex lens I collimate, and the light beam after collimation becomes line polarized light after the polarizer, are radiated at beam splitting and stand
In cube；Light beam after beam-dividing cube is divided into two bundles, and a road is reflection light, and a road is transmission light；Described reflection light
Bundle is radiated on reflective spatial light modulator；
Step 4, the light beam being radiated on reflective spatial light modulator are for diffraction reconstruction fractional order Bessel-Gauss
Light beam；The Bessel-Gauss beams of diffraction reconstruction, after beam-dividing cube, analyzer and aperture, is radiated at convex lens
Carry out Fourier transformation on II and generate fractional order perfection vortex beams；
Step 5, described fractional order perfection vortex beams are in CCD camera after imaging, and image enters after computer carries out
Continuous analysis；
Step 6, according to computer analysis results, produced perfect vortex beams bright ring radius is with fractional order topology
The change of charge values m and change；By axicon lens Refractive Index of Material in regulating step onenOr cone angleaNumerical value, mark can be regulated
Rank perfection vortex beams bright ring radius.
Beneficial effect: compared with prior art, this utility model fractional order perfection vortex beams generator device and side
Method is capable of parameter can the fractional order perfection vortex beams that freely regulates and controls of real-time online；This utility model device has principle letter
Clean, with low cost, parameter can real-time online regulation, easily operated advantage；Can be widely applied to the manipulation of microgranule light, optic test
In field.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of device of this utility model fractional order perfection vortex beams generator；Labelling in figure: 100, swash
Light device, 110, reflecting mirror, 120, pinhole filter, 130, convex lens I, 131, convex lens II, 141, the polarizer, 142, analyzing
Device, 150, beam-dividing cube, 200, reflective spatial light modulator, 210, aperture, 300, CCD camera, 400, calculate
Machine；
Fig. 2 is a number of components rank perfection vortex beam intensity figure of computer recording.
Detailed description of the invention
As it can be seen, a kind of fractional order perfection vortex beams generator, including a continuous-wave laser 100；Described company
The direction of advance that continuous wave laser 100 sends light beam is provided with reflecting mirror 110, is reflected the light beam direction of advance after mirror 110 reflection
It is sequentially provided with pinhole filter 120, convex lens I130, the polarizer 141 and beam-dividing cube 150；After beam-dividing cube 150
Light beam is divided into two bundles, the most a branch of for reflecting light, a branch of for transmission light；Reflection light direction of advance is provided with reflection type spatial light
Manipulator 200, the light beam produced after being reflected formula spatial light modulator 200 reflection is after transmission from one meridian to another beam-dividing cube 150, and it advances
Analyzer 142, aperture 210, convex lens II131 and CCD camera 300 it is sequentially provided with on direction；
Described reflective spatial light modulator 200, CCD camera 300 are connected with computer 400 respectively；Described pin hole
Distance between wave filter 120 and convex lens I130 is the focal length of convex lens I130；Described reflective spatial light modulator 200 is put
On the front focal plane of convex lens II131；Described CCD camera 300 is placed on the back focal plane of convex lens II131.
Utilize described fractional order perfection vortex beams generator produce fractional order perfection vortex beams method, including with
Lower step:
Step one, computer 400 is utilized to generate containing axicon lens transmittance function and fractional order vortex beams and plane wave
The plot of light intensity interfered；Detailed process is as follows:
The electric field of plane wave is expressed as:
Wherein, E0Represent oscillator intensity,kRepresenting wave number, z represents propagation distance；
The electric field impinging perpendicularly on the vortex beams on axicon lens is expressed as:
Wherein,For amplitude constant,For waist radius,mFor topological charge number, take mark；jFor imaginary unit；
The complex amplitude transmittance function of axicon lens is:
In formula,nFor axicon lens Refractive Index of Material,aAngle for the cone angle of axicon lens, i.e. the axicon lens conical surface Yu baseplane；k
For wave number,RFor axicon lens pupil radius；
Vortex beams COMPLEX AMPLITUDE with plane wave interference after axicon lens is:
；
Step 2, combination calculate holographic technique, utilize computer 400 by complex amplitude E1Plot of light intensity write Reflective spatial
Photomodulator 200；
Step 3, opening continuous-wave laser 100 power supply, the light beam that continuous-wave laser 100 sends is anti-by reflecting mirror 110
After penetrating, entering pinhole filter 120, then planoconvex lens I130 collimation, it is inclined that the light beam after collimation becomes line after the polarizer 141
Shake light, is radiated on beam-dividing cube 150；Light beam after beam-dividing cube 150 is divided into two bundles, and a road is reflection light, and one
Road is transmission light；Described reflection light beam is radiated on reflective spatial light modulator 200；
Step 4, the light beam being radiated on reflective spatial light modulator 200 are for diffraction reconstruction fractional order Bezier-height
This light beam；The Bessel-Gauss beams of diffraction reconstruction, after beam-dividing cube 150, analyzer 142 and aperture 210, is shone
Penetrate on convex lens II131, carry out Fourier transformation generation fractional order perfection vortex beams；
Step 5, described fractional order perfection vortex beams are in CCD camera after imaging, and image enters computer 400 and enters
Row subsequent analysis；
Step 6, according to computer analysis results, produced perfect vortex beams bright ring radius is with fractional order topology
The change of charge values m and change；By axicon lens Refractive Index of Material in regulating step onenOr cone angleaNumerical value, mark can be regulated
Rank perfection vortex beams bright ring radius.
Embodiment
As shown in Figure 1, the generator of a kind of fractional order perfection vortex beams, including a continuous-wave laser 100, should
In embodiment, continuous-wave laser 100 selects wavelength to be 632.8nm, and power is the He-Ne laser instrument of 3mW；This continuous wave laser
The light beam that device 100 sends enters spatial filter 120 after being reflected by reflecting mirror 110, and then planoconvex lens I 130 collimates, collimation
After light beam after the polarizer 141, become line polarized light, be radiated on beam-dividing cube 150；After beam-dividing cube 150, instead
Penetrate light to be radiated on reflective spatial light modulator 200；
Light beam after beam-dividing cube 150 is divided into two bundles, and a road is reflection light, and a road is transmission light；Reflection illumination
Penetrate on reflective spatial light modulator 200, after being reflected formula spatial light modulator 200 reflection, produce fractional order Bezier-height
This light beam, fractional order Bessel-Gauss beams is radiated on aperture 210 after beam-dividing cube 150, analyzer 142,
It is complete that fractional order Bessel-Gauss beams planoconvex lens II 131 Fourier transformation after aperture 210 produces fractional order
U.S. vortex beams, fractional order perfection vortex beams imaging in CCD camera 300；After be stored in computer 400 and be analyzed；
The focal length that distance is convex lens I 130 between described spatial filter 120 and convex lens I 130；Described is anti-
Penetrate formula spatial light modulator 200 to be placed on the front focal plane of convex lens II 131；Described CCD camera 300 is placed in convex lens II
On the back focal plane of 131；Described reflective spatial light modulator 200, CCD camera 300 are connected with computer 400 respectively；
The effect of described reflective spatial light modulator 200 is to produce fractional order Bessel-Gauss beams；Described rises
Device 141 and analyzer 142 are for regulating the beam quality of vortex beams partially；The effect of described aperture 210 is to select instead
Penetrate the first-order diffraction light beam of formula spatial light modulator 200 diffractive light field；The effect of described convex lens II 131 is to fractional order
Bessel-Gauss beams carries out Fourier transformation.
The production method of a kind of fractional order perfection vortex beams, specifically comprises the following steps that
Step one, by utilizing computer 400 to produce axicon lens transmittance function and fractional order vortex beams and plane wave
The plot of light intensity interfered, detailed process is as follows:
The electric field of plane wave is expressed as:
Wherein, E0Represent oscillator intensity,kRepresenting wave number, z represents propagation distance.
The electric field impinging perpendicularly on the vortex beams on axicon lens is expressed as:
Wherein,For amplitude constant,For waist radius,mFor topological charge number, take mark,jFor imaginary unit；
The complex amplitude amplitude transmittance of axicon lens is:
In formula,nFor axicon lens Refractive Index of Material,aAngle for the cone angle of axicon lens, i.e. the axicon lens conical surface Yu baseplane；k
For wave number,RFor axicon lens pupil radius；
Vortex beams COMPLEX AMPLITUDE with plane wave interference after axicon lens is:
Step 2, combination calculate holographic technique, utilize computer 400 by complex amplitude E1Plot of light intensity write Reflective spatial
Photomodulator 200；
Step 3, opening continuous-wave laser 100 power supply, the light beam that continuous-wave laser 100 sends is anti-by total reflective mirror 110
After penetrating, entering pinhole filter 120, then planoconvex lens I 130 and collimate, the light beam after collimation becomes line after the polarizer 141
Polarized light, is radiated on beam-dividing cube 150；Light beam after beam-dividing cube 150 is divided into two bundles, and a road is reflection light,
One tunnel is transmission light；Described reflection light beam is radiated on reflective spatial light modulator 200；
Step 4, the light beam being radiated on reflective spatial light modulator 200 are for diffraction reconstruction fractional order Bezier-height
This light beam；The Bessel-Gauss beams of diffraction reconstruction, after beam-dividing cube 150, analyzer 142 and aperture 210, is shone
Penetrate on convex lens II 131, carry out Fourier transformation generation fractional order perfection vortex beams；
Step 5, described fractional order perfection vortex beams are in CCD camera 300 after imaging, and image is stored in computer 400
Carry out subsequent analysis；
Step 8, Fig. 2 are a number of components rank perfection vortex beam intensity figure of computer recording, topology charge values m=in figure
2.1 ~ 3.0, it is spaced apart 0.1 rank；By Fig. 2 mesoscale eddies light beam bright ring breach change it can be seen that produce fractional order perfection whirlpool
Optically-active bundle is ideal；Additionally, by axicon lens Refractive Index of Material in regulating step onenOr cone angleaNumerical value, can regulate point
Number rank perfection vortex beams bright ring radius.This utility model apparatus and method can produce fractional order perfection vortex beams, and has
Have that principle is succinct, simple in construction, can regulate and control online, it is easy to the advantage of operation.
Claims (1)
1. a fractional order perfection vortex beams generator, including a continuous-wave laser (100), it is characterised in that: described
Continuous-wave laser (100) sends the direction of advance of light beam and is provided with reflecting mirror (110), is reflected the light beam after mirror (110) reflection
Direction of advance is sequentially provided with pinhole filter (120), convex lens I (130), the polarizer (141) and beam-dividing cube (150)；Warp
Light beam after beam-dividing cube (150) is divided into two bundles, the most a branch of for reflecting light, a branch of for transmission light；In reflection light advance side
Upwards being provided with reflective spatial light modulator (200), the light beam produced after being reflected formula spatial light modulator (200) reflection passes through
After beam-dividing cube (150), its direction of advance is sequentially provided with analyzer (142), aperture (210), convex lens II
And CCD camera (300) (131)；
Described reflective spatial light modulator (200), CCD camera (300) are connected with computer (400) respectively；Described pin
The focal length that distance is convex lens I (130) between hole wave filter (120) and convex lens I (130)；Described reflection type spatial light is adjusted
Device processed (200) is placed on the front focal plane of convex lens II (131)；Described CCD camera (300) is placed in convex lens II's (131)
On back focal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521102637.8U CN205594238U (en) | 2015-12-24 | 2015-12-24 | Device for generating perfect vortex light beam of fractional order |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521102637.8U CN205594238U (en) | 2015-12-24 | 2015-12-24 | Device for generating perfect vortex light beam of fractional order |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205594238U true CN205594238U (en) | 2016-09-21 |
Family
ID=56926594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521102637.8U Expired - Fee Related CN205594238U (en) | 2015-12-24 | 2015-12-24 | Device for generating perfect vortex light beam of fractional order |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205594238U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445943A (en) * | 2015-12-24 | 2016-03-30 | 河南科技大学 | Generation device and method of fractional-order perfect vortex beam |
| CN109870890A (en) * | 2019-01-11 | 2019-06-11 | 中国科学院西安光学精密机械研究所 | A kind of integer rank vortex beams phase mask plate and light path system with fractional order vortex profile |
| CN114785422A (en) * | 2022-04-15 | 2022-07-22 | 西安理工大学 | System for transmitting radial polarization vortex light beam interference underwater |
-
2015
- 2015-12-24 CN CN201521102637.8U patent/CN205594238U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445943A (en) * | 2015-12-24 | 2016-03-30 | 河南科技大学 | Generation device and method of fractional-order perfect vortex beam |
| CN109870890A (en) * | 2019-01-11 | 2019-06-11 | 中国科学院西安光学精密机械研究所 | A kind of integer rank vortex beams phase mask plate and light path system with fractional order vortex profile |
| CN109870890B (en) * | 2019-01-11 | 2020-06-26 | 中国科学院西安光学精密机械研究所 | Integer order vortex light beam phase mask plate with fractional order vortex contour and light path system |
| CN114785422A (en) * | 2022-04-15 | 2022-07-22 | 西安理工大学 | System for transmitting radial polarization vortex light beam interference underwater |
| CN114785422B (en) * | 2022-04-15 | 2024-01-19 | 西安理工大学 | System for radial polarized vortex beam interference is transmitted under water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105445943B (en) | A kind of generation device and production method of fractional order perfection vortex beams | |
| CN104635344B (en) | Bessel light beam generating device with adjustable parameters and production method of bessel beam generating device | |
| CN106560738A (en) | Device and method for generating perfect IG vortex light beam | |
| CN106950195B (en) | Programmable optical elements and light field regulator control system and method based on scattering medium | |
| CN105607267B (en) | A kind of device for generating salt free ligands needle-like light field | |
| CN105466577B (en) | The measuring device and method of perfect vortex beams topology charge values based on Intensity Analysis | |
| CN205594238U (en) | Device for generating perfect vortex light beam of fractional order | |
| CN104122666B (en) | Generation device and generation method for self-split light beams | |
| CN107621701B (en) | Method and system for generating double-index Bessel Gaussian beam | |
| CN103592768B (en) | Cosine-Gauss associates the generation system of light beam, production method | |
| CN104634285B (en) | A kind of regulatable speckle generator of contrast value and its production method | |
| CN106291961A (en) | A kind of method producing vector special space relational structure partially coherent light beam and device thereof | |
| CN109870890B (en) | Integer order vortex light beam phase mask plate with fractional order vortex contour and light path system | |
| EP2756349B1 (en) | Controlling light transmission through a medium | |
| US9074936B2 (en) | Multidimensional pulse shaper and spectrometer | |
| Chen et al. | Experimental demonstration of cylindrical vector spatiotemporal optical vortex | |
| CN102109680A (en) | Method and device for producing diffraction-free Bessel beam array in random order based on phase hologram | |
| CN103941407A (en) | System and method for generating partial correlated multimode Gaussian beam and measuring device | |
| CN204009237U (en) | The generation device of spontaneous fission light beam | |
| CN205300777U (en) | Measuring device of perfect vortex light beam topology lotus value based on light intensity analysis | |
| Dormidonov et al. | Interference effects in the conical emission of a femtosecond filament in fused silica | |
| CN207457617U (en) | The system for generating double index Bessel-Gaussian beams | |
| CN203930218U (en) | Generation system and the measurement mechanism of partial coherence multimode Gaussian beam | |
| CN108107594A (en) | A kind of production method of the generation device of spontaneous fission partially coherent light pulse | |
| Sun et al. | Design of beam shaping and focusing metasurface device based on GS algorithm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20171224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |