CN205388516U - Optically active interference measurement device in whirlpool - Google Patents
Optically active interference measurement device in whirlpool Download PDFInfo
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- CN205388516U CN205388516U CN201521110225.9U CN201521110225U CN205388516U CN 205388516 U CN205388516 U CN 205388516U CN 201521110225 U CN201521110225 U CN 201521110225U CN 205388516 U CN205388516 U CN 205388516U
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Abstract
The utility model discloses an optically active interference measurement device in whirlpool, include: vortex photo genesis unit, the control unit, vortex light modulation unit, conjugation vortex light interference unit and image acquisition unit. Vortex photo genesis unit is used for producing the vortex light beam, the control unit is used for changing the optically active propagation light path in whirlpool, vortex light modulation unit is used for the topology lotus modulate to the vortex light beam, conjugation vortex light interference unit is used for faling into two bundles with a branch of vortex light to wherein a branch of vortex phototransformation is another bundle conjugation vortex light, then interferes two bundles of light, the image acquisition unit is used for gathering the two bundles of optically active interference strength in conjugation whirlpool pictures, thereby can obtain exponent number and the symbol that vortex light topology was carried on one's shoulder or back through carry out assay to data collection. The utility model discloses utilize modified M the Z interferometer has provided a simple integer that does not have the device to introduce interference influence with the square ring way device that carries vortex phase plate VPP and has carried on one's shoulder or back interference measurement device with the half -integer topology.
Description
Technical field
This utility model relates to free-space communication and quantum communication network field, is specifically related to a kind of vortex interference of light measurement apparatus.
Background technology
1992, the Allen team of Univ Leiden Netherlands proved in photon theoretically containing the orbital angular momentum (OrbitalAngularMomentum, OAM) determined.One photon OAM value isCorresponding spiral type equiphase surface, helical phase item is exp (il φ), and l is OAM topological charge, and the sign symbol of l represents direction of rotation difference, and φ is the polar angle in polar coordinate system.The vortex light with OAM has potential application in quantum information process, Atomic Manipulation, microoperation and the field such as life sciences and remote sensing.Therefore, carry out the topological charge of vortex light accurately measuring and have very important significance.
The measurement of vortex light topological charge is included the measurement to its exponent number and symbol.The topological charge of vortex light can be modulated by the square loop device carrying vortex phase plate.If vortex light is after odd-times reflects, the symbol of vortex light topological charge will change.Recent years, for simplicity, the topological charge of vortex light is measured by general diffraction method.2009, vortex light, through the diffraction of looping pit, was 9 by the analysis of diffracted intensity figure can be measured the maximum integer topological charge exponent number of vortex light.2013, vortex light was through tilting the diffraction of convex lens, and it is 14 that analysis diffracted intensity figure can obtain the maximum integer topological charge exponent number of vortex light.2015, by analyzing the interferogram of vortex light and its conjugate beam, people measure the maximum integer topological charge exponent number of vortex light can reach 60.Recently, by a M Z interferometer revised, the maximum detection amount integer topological charge exponent number of vortex light has reached 90.But, these measuring methods can only obtain the exponent number of topological charge, and the symbol of topological charge has no idea to measure, then has owing to system includes as the such device of dove prism, thus system there is the interference of device introducing and some is complicated.
Utility model content
The purpose of this utility model is in that to solve above deficiency, it is provided that a kind of vortex interference of light measurement apparatus, and this device can measure exponent number and the symbol of vortex light integer and half-integer topological charge, and apparatus structure is simple and does not have device to introduce the impact interfered.
The technical solution of the utility model is achieved in that a kind of vortex interference of light measurement apparatus, including vortex light generation unit, control unit, vortex light-modulating cell, conjugation vortex optical interference unit and image acquisition units, wherein:
Described vortex light generation unit is used for producing vortex beams, and it includes the spatial light modulator SLM and the first completely reflecting mirror M1 of pump light source LD, optical beam expander BE, computer control；
Described control unit is for changing the propagation light path of vortex light, and when control signal set, vortex beams is by bounce transmission；When control signal resets, vortex beams is transmitted transmission；
Described vortex light-modulating cell is for being modulated the topological charge of vortex beams, and it includes the second completely reflecting mirror M2, the 3rd completely reflecting mirror M3, the 4th completely reflecting mirror M4, the first lens L1, the second lens L2 and vortex phase plate VPP；
Described conjugation vortex optical interference unit for being divided into two bundle vortex light by a branch of vortex light, and wherein a branch of vortex light is converted into the conjugation vortex light of another bundle, then two-beam being interfered, it includes the first beam splitter BS1, the second beam splitter BS2, the 5th completely reflecting mirror M5, the 6th completely reflecting mirror M6, the 7th completely reflecting mirror M7, eight convergent points mirror M 8 and the 9th completely reflecting mirror M9；
Described image acquisition units is acquired for restrainting conjugation vortex interference of light intensity map to two, by interference strength figure is analyzed, and the interference strength figure of charge coupled device twice collection of CCD that computer controls is contrasted, it is hereby achieved that the integer of vortex light and half-integer topological charge, wherein topological charge includes exponent number and symbol (topological charge represents around the number that light beam closed circuit one contour integration is 2 π integral multiples), and it includes the 3rd lens L3 and the charge coupled device CCD of computer control；
Described pump light source LD produces laser pulse, laser pulse is irradiated on the spatial light modulator SLM that described computer controls after optical beam expander BE focuses on and expands and produces vortex light, and described vortex light enters into described control unit behind the first completely reflecting mirror M1 change direction of propagation；
When the control signal set of described control unit, vortex light enters the first beam splitter BS1 of conjugation vortex optical interference unit after the first completely reflecting mirror M1 and control unit reflect, vortex light is divided into two bundles by described first beam splitter BS1, and wherein a branch of vortex light arrives the second beam splitter BS2 after sequentially passing through the reflection of the first beam splitter BS1, the 7th completely reflecting mirror M7, eight convergent points mirror M 8 and the 9th completely reflecting mirror M9；After another bundle vortex light sequentially passes through the 5th completely reflecting mirror M5, the 6th completely reflecting mirror M6 and the second beam splitter BS2 reflection, symbol becomes on the contrary, catch up with a branch of vortex light and arrive the second beam splitter BS2 simultaneously, and interfere herein, described interference light enters image acquisition units, and in described image acquisition units, the counting according to the interference strength figure petal (the interference strength figure of interference light is made up of multiple similar petal shapes) produced obtains the integer of vortex light and the exponent number of half-integer topological charge；
When the control signal of control unit resets, vortex beams transmitted through control unit enters into the first lens L1 of described vortex light-modulating cell after the second completely reflecting mirror M2 and the three completely reflecting mirror M3 reflection, vortex light after vortex light size is controlled by the first lens L1 changes light path then through the 4th completely reflecting mirror M4, change the vortex light of light path through vortex phase plate VPP, its topological charge increases by 1 rank, then through the second lens L2, vortex light size is controlled, finally it is transmitted into conjugation vortex optical interference unit through control unit again, then light path repeats the light path route of above-mentioned entrance conjugation vortex optical interference unit.
Preferably, described control unit is made up of grating crystal switch GCCD.
Preferably, described vortex phase plate VPP is the transparent phase plate that one piece of refractive index is fixing.
Preferably, described transparent phase plate one side surface is plane, and opposite side surface is helical phase face, and its thickness is directly proportional to angular azimuth.
Preferably, described first beam splitter BS1 is for being divided into two bundles by a branch of vortex light, and its splitting ratio is 50:50.
Preferably, described second beam splitter BS2 is for restrainting the conjugation vortex interference of light by two and synthesizing a branch of, and its splitting ratio is 50:50.
Preferably, from conjugation vortex optical interference unit, the second beam splitter BS2 interfering beam out enters after image acquisition units through the 3rd lens L3, described interfering beam enters the charge coupled device CCD that computer controls after vortex light size is controlled by described 3rd lens L3, the interference strength figure of interference light is acquired by the charge coupled device CCD that described computer controls, interference strength figure is analyzed, the half of the petal number of interference strength figure is the topological charge of vortex light, thus the counting according to petal obtains the integer of vortex light and the exponent number of half-integer topological charge.
Preferably, the interference strength figure of charge coupled device twice collection of CCD by computer is controlled contrasts, and some petal numbers relating to intensity map increase by 2, then the topological charge symbol of vortex light is just, is otherwise negative.
The beneficial effects of the utility model: interferometric measuring means of the present utility model can measure integer and the half-integer topological charge of vortex light；Simple completely reflecting mirror is adopted to ensure that the accurate equiarm characteristic of M Z interferometer；A branch of vortex light is converted into its conjugation vortex light by the odd-times reflection adopting simple completely reflecting mirror, from introducing the impact interfered without device；Global design Rational structure is simple, uses easy to operate, both can measure the exponent number of topological charge, can obtain again the symbol of topological charge.
Accompanying drawing explanation
Fig. 1 is the block schematic illustration of a kind of vortex interference of light measurement apparatus of the present utility model.
Fig. 2 is the measurement result (in interference strength figure, petal is counted as 4) of a kind of vortex interference of light measurement apparatus of the present utility model.
Fig. 3 is the measurement result (in interference strength figure, petal is counted as 6) of a kind of vortex interference of light measurement apparatus of the present utility model.
Fig. 4 is the measurement result (in interference strength figure, petal is counted as 7) of a kind of vortex interference of light measurement apparatus of the present utility model.
Fig. 5 is the measurement result (in interference strength figure, petal is counted as 5) of a kind of vortex interference of light measurement apparatus of the present utility model.
In figure, the title that each label is corresponding: 10 vortex light generation units: 101 pump light source LD, 102 optical beam expander BE, the spatial light modulator SLM, 104 first completely reflecting mirror M1 that 103 computers control；20 control units；30 vortex light-modulating cells, 301 second completely reflecting mirror M2,302 the 3rd completely reflecting mirror M3,303 first lens L1,304 the 4th completely reflecting mirror M4,305 vortex phase plate VPP, 306 second lens L2；40 conjugation vortex optical interference units: 401 first beam splitter BS1,402 the 5th completely reflecting mirror M5,403 the 6th completely reflecting mirror M6,404 second beam splitter BS2,405 the 7th completely reflecting mirror M7,406 eight convergent points mirror M 8,407 the 9th completely reflecting mirror M9；50 image acquisition units: 501 the 3rd lens L3, the charge coupled device CCD that 502 computers control.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described further
Below in conjunction with attached Figure 15, detailed description of the invention of the present utility model is described further:
With reference to shown in accompanying drawing 1, a kind of vortex interference of light measurement apparatus, this device includes vortex light generation unit 10, control unit 20, vortex light-modulating cell 30, conjugation vortex optical interference unit 40 and image acquisition units 50.
Wherein said vortex light generation unit 10 is used for producing vortex beams, and it includes the spatial light modulator SLM103 and the first completely reflecting mirror M1104 of pump light source LD101, optical beam expander BE102, computer control；Described control unit 20 is made up of grating crystal switch GCCD, and for changing the propagation light path of vortex light, when control signal set, vortex beams is by bounce transmission；When control signal resets, vortex beams is transmitted transmission；Described vortex light-modulating cell 30 is for being modulated the topological charge of vortex beams, and it includes the second completely reflecting mirror M2301, the 3rd completely reflecting mirror M3302, the first lens L1303, the 4th completely reflecting mirror M4304, vortex phase plate VPP305 and the second lens L2306；Described conjugation vortex optical interference unit 40 for being divided into two bundle vortex light by a branch of vortex light, and wherein a branch of vortex light is converted into the conjugation vortex light of another bundle, then two-beam being interfered, it includes the first beam splitter BS1401, the 5th completely reflecting mirror M5402, the 6th completely reflecting mirror M6403, the second beam splitter BS2404, the 7th completely reflecting mirror M7405, eight convergent points mirror M 8406 and the 9th completely reflecting mirror M9407；Described image acquisition units 50 is acquired for restrainting conjugation vortex interference of light intensity map to two, by interference strength figure being analyzed (analysis here is through human eye and the petal counting in interference strength figure is checked intuitively), and the interference strength figure of charge coupled device twice collection of CCD502 that computer controls is contrasted, it is hereby achieved that the integer of vortex light and half-integer topological charge (topological charge represents around the number that light beam closed circuit one contour integration is 2 π integral multiples), wherein topological charge includes exponent number and symbol；Described image acquisition units 50 includes the 3rd lens L3501 and the charge coupled device CCD502 of computer control.
Wherein the function of each element and annexation each other are as follows:
Described pump light source LD101 is used for producing laser pulse；Described optical beam expander BE102 is connected with described pump light source LD101, for laser pulse being focused and expanding；The spatial light modulator SLM103 that described computer controls is connected with described optical beam expander BE102, is used for producing vortex beams；The spatial light modulator SLM103 that described first completely reflecting mirror M1104 controls with described computer is connected, for changing the direction of propagation of vortex beams.
Described second completely reflecting mirror M2301 is connected with described control unit 20, for changing the direction of propagation of vortex beams；Described 3rd completely reflecting mirror M3302 is connected with described second completely reflecting mirror M2301, for changing the direction of propagation of vortex beams；Described first lens L1303 is connected with described 3rd completely reflecting mirror M3302, for controlling the size of vortex light；Described 4th completely reflecting mirror M4304 is connected with described first lens L1303, for changing the direction of propagation of vortex beams；Described vortex phase plate VPP305 is connected with described 4th completely reflecting mirror M4304, for increasing by 1 rank by the topological charge of its vortex beams；Described second lens L2306 is connected with described vortex phase plate VPP305, for controlling the size of vortex light, and vortex beams is transferred to control unit 20.
Described first beam splitter BS1401 is connected with described control unit 20, and its splitting ratio is 50:50, for a branch of vortex light is divided into two bundles；Described 5th completely reflecting mirror M5402, the 6th completely reflecting mirror M6403, the 7th completely reflecting mirror M7405, eight convergent points mirror M 8406 and the 9th completely reflecting mirror M9407 are for changing the direction of propagation of vortex beams, and ensure the accurate equiarm characteristic of M Z interferometer；Described second beam splitter BS2404 and the six completely reflecting mirror M6403 and the nine completely reflecting mirror M9407 connects, and its splitting ratio is 50:50, interferes at this for restrainting conjugation vortex light by two and synthesizes a branch of；Described first beam splitter BS1401, the 7th completely reflecting mirror M7405, eight convergent points mirror M 8406 and the 9th completely reflecting mirror M9407 are to wherein a branch of vortex luminous reflectance four times, and vortex beams symbol is constant；Another is restrainted vortex luminous reflectance three times by described 5th completely reflecting mirror M5402, the 6th completely reflecting mirror M6403 and the second beam splitter BS2404, and this vortex optical character changes.
Described 3rd lens L3501 is connected with the second beam splitter BS2404 in described conjugation vortex optical interference unit 40, for controlling the size of vortex beams；The charge coupled device CCD502 that described computer controls is connected with described 3rd lens L3501, it is acquired for restrainting conjugation vortex interference of light intensity map to two, by interference strength figure is analyzed, and the interference strength figure of charge coupled device twice collection of CCD502 that computer controls is contrasted, it is hereby achieved that the integer of vortex light and half-integer topological charge, wherein topological charge includes exponent number and symbol.
Specific works principle of the present utility model is as follows: in this one vortex interference of light measurement apparatus, pump light source LD101 produces laser pulse, laser pulse irradiates the spatial light modulator SLM103 that computer controls after optical beam expander BE102 focuses on and expands, the spatial light modulator SLM103 controlled by computer can produce vortex light, and vortex light changes entrance grating crystal switch GCCD20 behind the direction of propagation through the first completely reflecting mirror M1104.
When the control signal set of control unit 20, vortex light enters the first beam splitter BS1401 of conjugation vortex optical interference unit 40 after the first completely reflecting mirror M1104 and grating crystal switch GCCD20 reflects, vortex light is divided into two bundles by the first beam splitter BS1401, wherein a branch of vortex light arrives the second beam splitter BS2404 after the reflection of the first beam splitter BS1401, the 7th completely reflecting mirror M7405, eight convergent points mirror M 8406 and the 9th completely reflecting mirror M9407, and symbol is constant；Another bundle vortex light symbol after the 5th completely reflecting mirror M5402, the 6th completely reflecting mirror M6403 and the second beam splitter BS2404 reflect becomes on the contrary, catch up with a branch of vortex light and arrive the second beam splitter BS2404 simultaneously, and interfere herein, interference light enters image acquisition units 50.
From conjugation vortex optical interference unit 40, the second beam splitter BS2404 interference light out enters image acquisition units 50 through the 3rd lens L3501, interference light enters the charge coupled device CCD502 that computer controls after vortex light size is controlled by the 3rd lens L3501, the interference strength figure of interference light is acquired by the charge coupled device CCD502 that computer controls, by interference strength figure is analyzed, the half of the petal number of interference strength figure is the topological charge of vortex light, thus the counting according to petal is obtained with the integer of vortex light and the exponent number of half-integer topological charge.
nullWhen the control signal of control unit 20 resets，Vortex light transmitted through grating crystal switch GCCD20 enters vortex light-modulating cell 30 through the second completely reflecting mirror M2301，Vortex light enters the first lens L1303 after the second completely reflecting mirror M2301 and the three completely reflecting mirror M3302 reflection,Vortex light after vortex light size is controlled by the first lens L1303 changes light path then through the 4th completely reflecting mirror M4304，Change the vortex light of light path through vortex phase plate VPP305，Its topological charge increases by 1 rank，Then through the second lens L2306, vortex light size is controlled，It is transmitted into conjugation vortex optical interference unit 40 through grating crystal switch GCCD20 after，Process below is caught up with and is stated the process repetition entering conjugation vortex optical interference unit 40，In order to simply，Here no longer describe in detail.Now, the interference strength figure of charge coupled device twice collection of CCD502 that computer controls being contrasted, if the petal number of interference strength figure increases by 2, then the topological charge symbol of vortex light is just, is otherwise negative.
With reference to shown in accompanying drawing 2 Fig. 5, the measurement process of the present embodiment being further illustrated, the interference strength figure shown above for charge coupled device CCD that computer controls is made up of multiple similar petal shapes.It is 2 times of relations, i.e. n=2l between petal number n and topological charge number l, just can directly calculate topological charge number thereby through petal number.
The utility model proposes the interferometric measuring means of a kind of vortex light integer and half-integer topological charge, this device is possible not only to measure the symbol of vortex light integer and half-integer topological charge, and the exponent number of vortex light integer and half-integer topological charge can be measured, the exponent number of maximum integer topological charge can reach 90, and apparatus structure is simple and does not have device to introduce the impact interfered.
The announcement of book and instruction according to the above description, above-mentioned embodiment can also be modified and revise by this utility model those skilled in the art.Therefore, this utility model is not limited to detailed description of the invention disclosed and described above, should also be as falling in scope of the claims of the present utility model to modifications and changes more of the present utility model.Although additionally, employ some specific terms in this specification, but these terms are intended merely to convenient explanation, this utility model are not constituted any restriction.
Claims (8)
1. a vortex interference of light measurement apparatus, it is characterised in that include vortex light generation unit, control unit, vortex light-modulating cell, conjugation vortex optical interference unit and image acquisition units, wherein:
Described vortex light generation unit is used for producing vortex beams；Described vortex light generation unit includes the spatial light modulator SLM and the first completely reflecting mirror M1 of pump light source LD, optical beam expander BE, computer control；
Described control unit is for changing the propagation light path of vortex beams, and when control signal set, vortex beams is by bounce transmission；When control signal resets, vortex beams is transmitted transmission；
Described vortex light-modulating cell is for being modulated the topological charge of vortex beams；Described vortex light-modulating cell includes the second completely reflecting mirror M2, the 3rd completely reflecting mirror M3, the 4th completely reflecting mirror M4, the first lens L1, the second lens L2 and vortex phase plate VPP；
Described conjugation vortex optical interference unit for being divided into two bundle vortex light by a branch of vortex light, and wherein a branch of vortex light is converted into the conjugation vortex light of another bundle, then two-beam is interfered；Described conjugation vortex optical interference unit includes the first beam splitter BS1, the second beam splitter BS2, the 5th completely reflecting mirror M5, the 6th completely reflecting mirror M6, the 7th completely reflecting mirror M7, eight convergent points mirror M 8 and the 9th completely reflecting mirror M9；
Described image acquisition units is acquired for restrainting conjugation vortex interference of light intensity map to two, and the interference strength figure of charge coupled device twice collection of CCD that computer controls is contrasted, thus obtaining integer and the half-integer topological charge of vortex light, wherein topological charge includes exponent number and symbol；Described image acquisition units includes the 3rd lens L3 and the charge coupled device CCD of computer control；
Described pump light source LD produces laser pulse, laser pulse is irradiated on the spatial light modulator SLM that described computer controls after optical beam expander BE focuses on and expands and produces vortex beams, and described vortex beams enters into described control unit behind the first completely reflecting mirror M1 change direction of propagation；
When the control signal set of described control unit, vortex light enters the first beam splitter BS1 of conjugation vortex optical interference unit after the first completely reflecting mirror M1 and control unit reflect, vortex beams is divided into two bundles by described first beam splitter BS1, and wherein a branch of vortex light arrives the second beam splitter BS2 after sequentially passing through the reflection of the first beam splitter BS1, the 7th completely reflecting mirror M7, eight convergent points mirror M 8 and the 9th completely reflecting mirror M9；After another bundle vortex light sequentially passes through the 5th completely reflecting mirror M5, the 6th completely reflecting mirror M6 and the second beam splitter BS2 reflection, symbol becomes on the contrary, catch up with a branch of vortex light and arrive the second beam splitter BS2 simultaneously, and interfere herein, described interference light enters image acquisition units, and in the petal shape interference strength figure constituted according to interference strength in described image acquisition units, the counting of petal is obtained with the integer of vortex light and the exponent number of half-integer topological charge；
When the control signal of control unit resets, vortex beams transmitted through control unit enters into the first lens L1 of described vortex light-modulating cell after the second completely reflecting mirror M2 and the three completely reflecting mirror M3 reflection, vortex light after vortex light size is controlled by the first lens L1 changes light path then through the 4th completely reflecting mirror M4, change the vortex light of light path through vortex phase plate VPP, its topological charge increases by 1 rank, then through the second lens L2, vortex light size is controlled, finally it is transmitted into conjugation vortex optical interference unit through control unit again, then light path repeats the light path route of above-mentioned entrance conjugation vortex optical interference unit.
2. a kind of vortex interference of light measurement apparatus as claimed in claim 1, it is characterised in that described control unit is made up of grating crystal switch GCCD.
3. a kind of vortex interference of light measurement apparatus as claimed in claim 1, it is characterised in that described vortex phase plate VPP is the transparent phase plate that one piece of refractive index is fixing.
4. a kind of vortex interference of light measurement apparatus as claimed in claim 3, it is characterised in that described transparent phase plate one side surface is plane, and opposite side surface is helical phase face, and its thickness is directly proportional to angular azimuth.
5. a kind of vortex interference of light measurement apparatus as claimed in claim 1, it is characterised in that described first beam splitter BS1 is for being divided into two bundles by a branch of vortex light, and its splitting ratio is 50:50.
6. a kind of vortex interference of light measurement apparatus as claimed in claim 1, it is characterised in that described second beam splitter BS2 interferes for restrainting conjugation vortex beams by two and synthesizes a branch of, and its splitting ratio is 50:50.
7. a kind of vortex interference of light measurement apparatus as claimed in claim 1, it is characterized in that, from conjugation vortex optical interference unit, the second beam splitter BS2 interference light out enters after image acquisition units through the 3rd lens L3, described interference light enters the charge coupled device CCD that computer controls after vortex light size is controlled by described 3rd lens L3, the interference strength figure of interference light is acquired by the charge coupled device CCD that described computer controls, and interference strength figure is analyzed, in interference strength figure, the half of petal is the topological charge of vortex light, then the integer of vortex light and the exponent number of half-integer topological charge is obtained according to the counting of petal.
8. a kind of vortex interference of light measurement apparatus as claimed in claim 7, it is characterized in that, the interference strength figure of charge coupled device twice collection of CCD by computer is controlled contrasts, and some petal numbers relating to intensity map increase by 2, then the topological charge symbol of vortex light is just, is otherwise negative.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509902A (en) * | 2015-12-25 | 2016-04-20 | 华南师范大学 | Interference measurement method and interference measurement system for vortex beam |
| CN106932107A (en) * | 2017-04-07 | 2017-07-07 | 哈尔滨工业大学 | A kind of topological charge measurement apparatus based on far field construction principle |
| CN111474543A (en) * | 2020-04-13 | 2020-07-31 | 中国人民解放军国防科技大学 | Vortex electromagnetic wave interference target three-dimensional imaging method and device |
| CN112526539A (en) * | 2020-11-25 | 2021-03-19 | 中国人民解放军战略支援部队航天工程大学 | Target compound motion detection device based on multimode vortex light beam |
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2015
- 2015-12-25 CN CN201521110225.9U patent/CN205388516U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105509902A (en) * | 2015-12-25 | 2016-04-20 | 华南师范大学 | Interference measurement method and interference measurement system for vortex beam |
| CN105509902B (en) * | 2015-12-25 | 2018-10-19 | 华南师范大学 | The interferometric method and system of vortex light |
| CN106932107A (en) * | 2017-04-07 | 2017-07-07 | 哈尔滨工业大学 | A kind of topological charge measurement apparatus based on far field construction principle |
| CN111474543A (en) * | 2020-04-13 | 2020-07-31 | 中国人民解放军国防科技大学 | Vortex electromagnetic wave interference target three-dimensional imaging method and device |
| CN111474543B (en) * | 2020-04-13 | 2022-08-09 | 中国人民解放军国防科技大学 | Vortex electromagnetic wave interference target three-dimensional imaging method and device |
| CN112526539A (en) * | 2020-11-25 | 2021-03-19 | 中国人民解放军战略支援部队航天工程大学 | Target compound motion detection device based on multimode vortex light beam |
| CN112526539B (en) * | 2020-11-25 | 2023-08-01 | 中国人民解放军战略支援部队航天工程大学 | Target compound motion detection device based on multimode vortex light beam |
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