CN207587399U - A kind of device that optical eddy is generated using coherent laser array - Google Patents
A kind of device that optical eddy is generated using coherent laser array Download PDFInfo
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- CN207587399U CN207587399U CN201721665199.5U CN201721665199U CN207587399U CN 207587399 U CN207587399 U CN 207587399U CN 201721665199 U CN201721665199 U CN 201721665199U CN 207587399 U CN207587399 U CN 207587399U
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- spatial light
- light modulator
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- microlens array
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Abstract
The utility model is related to a kind of devices that optical eddy is generated using coherent laser array.The device generates the Gaussian beam of intensity stabilization using He Ne lasers.Enter beam expander after the Gaussian Beam speculum reflection.The radius of incident beam is extended to r and enters microlens array by beam expander.Incident beam is beamed into 6 in angular equally distributed beamlet under the action of microlens array and enters spatial light modulator.The spatial light modulator is controlled by computer A.Incident beamlets obtain different initial phases under the action of spatial light modulator, and it is topological charge number that the phase difference of adjacent beamlet, which is π m/3, m,.The beam array being emitted from spatial light modulator converges in the CCD detector at lens focal plane after freely transmitting.CCD detector records the light intensity data of outgoing beam and is transmitted to computer B.The advantages of the utility model：The adjustable optical eddy of topological charge numerical value dynamic can be achieved.Under long distance transmission environment, still with preferable topological charge stability.
Description
Technical field
The utility model provides a kind of device that optical eddy is generated using coherent laser array, belongs to optical information tune
Control field.
Background technology
Laser array has obtained extensive research due to its potential application in high energy weapon and atmospheric optical communication.Laser
In radially or the beamlet of rectangular symmetrical distribution in array, in lock mutually and non-lock mutually progress coherent superposition or incoherent
Superposition.Light field after superposition can keep stable light distribution and with high power in remote transmission.At present to laser battle array
The research of row is concentrated mainly on light intensity manipulation, abundant not enough to the research of its phase information.
Optical eddy refers to the coherent states field with helical phase structure.The helical phase structure causes the photon of light field to have
There is orbital angular momentum.Orbital angular momentum entrained by vortex light field is quantitatively described by the topological charge numerical value of vortex phase.
The topological charge numerical value of optical eddy is integer, the different orbital angular momentum of different topology lotus numerical representation method.Wherein, orbital angular momentum
Conservation of momentum principle is followed in transmission process.Using carrier of the vortex light as optical signal, in addition to amplitude, partially can be utilized
Shake, the conventional methods such as frequency carry information, can also be using topological charge numerical value come description information.Therefore, vortex light has more
Big inromation bandwidth.Just because of this, the production method of optical eddy and device have realistic meaning.Optical eddy is generated at present
Method and apparatus mainly directly modulate the phase of incident field using spiral phase plate or spatial light modulator, to reach
There is the purpose of vortex phase to optical output field.But generated optical eddy in this way, the dynamic of topological charge numerical value
Variation range is relatively narrow, and the light intensity of optical output field is smaller, unstable to disturbing.
In order to solve above-mentioned technical problem, the utility model forms laser array light source using microlens array,
The spatial distribution and initial phase of each beamlet in array are controlled, realizes the adjustable optical eddy of topological charge numerical value dynamic.This
Utility model has the characteristics of topological charge modulation range is big, and output intensity is stablized.The optical eddy that the utility model generates,
Under long distance transmission environment, there is preferable topological charge stability.
Invention content
The utility model provides the optical eddy generation device that a kind of topological charge modulation range is big, and output intensity is stablized.
The device generates the Gaussian beam of intensity stabilization using He-Ne lasers, and the Gaussian Beam speculum, which is reflected into, to be expanded
Device.The hot spot that radius is r is expanded under the action of beam expander, and enters microlens array.Microlens array divides incident light
Beam is into 6 in angular equally distributed beamlet.Outgoing beam enters close spatial light tune coaxial with the microlens array
Device processed.The spatial light modulator is connect with computer A, and is controlled by it.Under the action of the spatial light modulator, from micro-
The beamlet of lens array outgoing obtains different initial phases, wherein, the phase difference between adjacent beams is π m/3, and m is opens up
Flutter lotus number.The beam array being emitted from the spatial light modulator converges after freely transmitting at lens focal plane.It is placed on
The intensity signal of the CCD detector detection optical eddy of mirror focal plane is simultaneously transmitted to computer B.The utility model utilizes micro-
Lens array forms laser array light source, the spatial distribution and initial phase of each beamlet in array is controlled, via spatial light tune
The adjustable optical eddy of topological charge numerical value dynamic is realized in device effect processed.The optical eddy that the utility model generates, topological charge modulation
Range is big, and output intensity is stablized, and under long distance transmission environment, has preferable topological charge stability.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment is described further the utility model.
Fig. 1 is a kind of schematic device that optical eddy is generated using coherent laser array.
In figure：1.He-Ne lasers, 2. speculums, 3. beam expanders, 4. microlens arrays, 5. spatial light modulators, 6. meters
Calculation machine A, 7. lens, 8.CCD detectors, 9. computer B
Fig. 2 is the arrangement schematic diagram of microlens array.
In figure：1-6. lenticule.
Specific embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
The work step of Fig. 1 shown devices is as follows：
1st, He-Ne lasers（1）The Gaussian beam of intensity stabilization is generated, and enters speculum（2）；The speculum（2）
The reflected beams enter beam expander（3）；The beam expander（3）The radius of incident beam is extended into r；From the beam expander（3）
The light beam of outgoing, into microlens array（4）；The microlens array（4）Incident light is beamed into 6 to be angularly uniformly distributed
Beamlet；From the microlens array（4）6 beamlets of outgoing enter and microlens array（4）Coaxial close placement
Spatial light modulator（5）；The spatial light modulator（5）With computer A（6）Connection；And by computer A（6）Control；In space
Optical modulator（5）Under the action of, from microlens array（4）The beamlet of outgoing obtains different initial phases, adjacent beamlet
Initial phase difference for π m/3, m be nonzero integer；From spatial light modulator（5）The beam array of outgoing after freely transmitting by
Lens（7）Converge at the CCD detector of focal plane（8）；The CCD detector（8）It is m's that the incident light at place, which has topological charge,
Light is vortexed；CCD detector（8）It records the light intensity data of incident beam and is transmitted to computer B（9）；
Fig. 2 show microlens array（4）Schematic diagram：
1st, lenticule in Fig. 2（1）-（6）Identical, each lenticule radius is 0.33r；Lenticule（1）-（6）With altogether
The adjacent tangent mode in face is arranged in closed circle ring-type.
Claims (2)
1. it is a kind of using coherent laser array generate optical eddy device, in structure include at least He-Ne lasers (1),
Speculum (2), beam expander (3), microlens array (4), spatial light modulator (5), computer A (6), lens (7), CCD detections
Device (8), computer B（9）, it is characterized in that：He-Ne lasers（1）The Gaussian beam of intensity stabilization is generated, and enters speculum
（2）；The speculum（2）The reflected beams enter beam expander（3）；The beam expander（3）The radius of incident beam is extended to
r；From the beam expander（3）The light beam of outgoing enters microlens array（4）；The microlens array（4）Incident light is beamed into 6
It is a in angular equally distributed beamlet；From the microlens array（4）6 beamlets of outgoing enter and microlens array
（4）The coaxial spatial light modulator close to placement（5）；The spatial light modulator（5）With computer A（6）Connection；And by calculating
Machine A（6）Control；In spatial light modulator（5）Under the action of, from microlens array（4）The beamlet of outgoing obtain it is different just
Beginning phase, it is nonzero integer that the initial phase difference of adjacent beamlet, which is π m/3, m,；From spatial light modulator（5）The light beam battle array of outgoing
Row are after freely transmitting by lens（7）Converge at the CCD detector of focal plane（8）；The CCD detector（8）The incidence at place
There is light the light that topological charge is m to be vortexed；CCD detector（8）It records the light intensity data of incident beam and is transmitted to computer B
（9）.
2. a kind of device that optical eddy is generated using coherent laser array according to claim 1, it is characterized in that：It is micro-
Lens array（4）By 6 radiuses for 0.33r circular microlens by the center of circle it is coplanar, it is adjacent it is tangent in a manner of be arranged in closed circle ring-type；
Spatial light modulator（5）Phase-modulation 6 regions are divided evenly into the range of polar angle；The spatial light modulator（5）'s
Each polar angle region and microlens array（4）Each lenticule correspond so that from microlens array（4）The son of outgoing
Light beam injects spatial light modulator（5）Different polar angle regions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721665199.5U CN207587399U (en) | 2017-12-04 | 2017-12-04 | A kind of device that optical eddy is generated using coherent laser array |
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| CN201721665199.5U CN207587399U (en) | 2017-12-04 | 2017-12-04 | A kind of device that optical eddy is generated using coherent laser array |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637557A (en) * | 2018-11-20 | 2019-04-16 | 暨南大学 | Sextuple high density data storage method |
| CN111121961A (en) * | 2020-01-03 | 2020-05-08 | 中国计量大学 | Device for simultaneously generating and detecting digital correlated vortex rotation |
| CN111323925A (en) * | 2020-01-14 | 2020-06-23 | 电子科技大学 | Optical system for generating controllable convergent vortex light beam |
| CN111473872A (en) * | 2020-04-16 | 2020-07-31 | 中国科学院光电技术研究所 | Method and device for measuring multimode perfect vortex beam |
| CN112198668A (en) * | 2020-10-19 | 2021-01-08 | 中国人民解放军国防科技大学 | Optical field reconstruction system and method for generating vortex light beam by coherent synthesis of fiber laser |
| CN112803228A (en) * | 2021-01-26 | 2021-05-14 | 中国人民解放军国防科技大学 | Vortex light beam generation method based on spiral line arrangement phase-locked fiber laser array |
| CN114624895A (en) * | 2022-02-21 | 2022-06-14 | 苏州大学 | System and method for generating partial coherence vector power exponent vortex light beam |
| CN114675416A (en) * | 2022-03-29 | 2022-06-28 | 中国计量大学 | Method for generating anti-turbulence-disturbance multimode high-order vortex rotation by using distortion disturbance |
| CN115276817A (en) * | 2022-07-20 | 2022-11-01 | 陕西师范大学 | Vector vortex rotation dual-dimensional multi-mode based communication method and system |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109637557A (en) * | 2018-11-20 | 2019-04-16 | 暨南大学 | Sextuple high density data storage method |
| CN111121961A (en) * | 2020-01-03 | 2020-05-08 | 中国计量大学 | Device for simultaneously generating and detecting digital correlated vortex rotation |
| CN111323925A (en) * | 2020-01-14 | 2020-06-23 | 电子科技大学 | Optical system for generating controllable convergent vortex light beam |
| CN111473872B (en) * | 2020-04-16 | 2022-08-02 | 中国科学院光电技术研究所 | Method and device for measuring multimode perfect vortex beam |
| CN111473872A (en) * | 2020-04-16 | 2020-07-31 | 中国科学院光电技术研究所 | Method and device for measuring multimode perfect vortex beam |
| CN112198668A (en) * | 2020-10-19 | 2021-01-08 | 中国人民解放军国防科技大学 | Optical field reconstruction system and method for generating vortex light beam by coherent synthesis of fiber laser |
| CN112803228A (en) * | 2021-01-26 | 2021-05-14 | 中国人民解放军国防科技大学 | Vortex light beam generation method based on spiral line arrangement phase-locked fiber laser array |
| CN112803228B (en) * | 2021-01-26 | 2021-12-17 | 中国人民解放军国防科技大学 | Vortex light beam generation method based on spiral line arrangement phase-locked fiber laser array |
| CN114624895A (en) * | 2022-02-21 | 2022-06-14 | 苏州大学 | System and method for generating partial coherence vector power exponent vortex light beam |
| CN114675416A (en) * | 2022-03-29 | 2022-06-28 | 中国计量大学 | Method for generating anti-turbulence-disturbance multimode high-order vortex rotation by using distortion disturbance |
| CN114675416B (en) * | 2022-03-29 | 2023-12-29 | 中国计量大学 | Method for generating multimode Gao Jieguo optical rotation resisting turbulence disturbance by utilizing torsion disturbance |
| CN115276817A (en) * | 2022-07-20 | 2022-11-01 | 陕西师范大学 | Vector vortex rotation dual-dimensional multi-mode based communication method and system |
| CN115276817B (en) * | 2022-07-20 | 2024-01-16 | 陕西师范大学 | Communication method and system based on vector vortex rotation double-dimension multi-mode |
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Granted publication date: 20180706 Termination date: 20181204 |