CN113406729A - Bidirectional holographic modulation method based on broadband visible light nanometer super surface and application - Google Patents
Bidirectional holographic modulation method based on broadband visible light nanometer super surface and application Download PDFInfo
- Publication number
- CN113406729A CN113406729A CN202110732897.7A CN202110732897A CN113406729A CN 113406729 A CN113406729 A CN 113406729A CN 202110732897 A CN202110732897 A CN 202110732897A CN 113406729 A CN113406729 A CN 113406729A
- Authority
- CN
- China
- Prior art keywords
- nano
- super surface
- substrate
- modulation method
- different
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 17
- 239000011449 brick Substances 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 230000010287 polarization Effects 0.000 claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 17
- 239000002356 single layer Substances 0.000 claims abstract description 14
- 239000002086 nanomaterial Substances 0.000 claims abstract description 11
- 230000010365 information processing Effects 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000004088 simulation Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052681 coesite Inorganic materials 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 229910052906 cristobalite Inorganic materials 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 229910052682 stishovite Inorganic materials 0.000 claims description 2
- 229910052905 tridymite Inorganic materials 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 230000004044 response Effects 0.000 abstract description 2
- 238000001093 holography Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009396 hybridization Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/002—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of materials engineered to provide properties not available in nature, e.g. metamaterials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/0005—Adaptation of holography to specific applications
- G03H1/0011—Adaptation of holography to specific applications for security or authentication
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/0005—Adaptation of holography to specific applications
- G03H1/0011—Adaptation of holography to specific applications for security or authentication
- G03H2001/0016—Covert holograms or holobjects requiring additional knowledge to be perceived, e.g. holobject reconstructed only under IR illumination
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Holo Graphy (AREA)
- Polarising Elements (AREA)
- Credit Cards Or The Like (AREA)
Abstract
The invention discloses a bidirectional holographic modulation method based on a broadband visible light nanometer super surface and application thereof. The super surface is formed by periodically arranging a plurality of unit structures, and each unit structure comprises a substrate and nano bricks arranged on the substrate. The method can realize bidirectional holographic image display of a single-layer nano structure in a broadband visible light range by designing the size parameters of the unit structure to construct the super surface. The single nano brick has independent freedom degrees in length and width, has different responses to two different linearly polarized light respectively, and realizes the display of two different images under different polarizations. The invention has small structure scale and easy integration, and can be used as a device for enhancing anti-counterfeiting application of nonreciprocal information processing, optical metering and encryption/decryption security.
Description
Technical Field
The invention relates to the field of micro-nano optics and optical holography, in particular to a bidirectional holography method of a single-layer nano structure in a broadband visible light range and application thereof.
Background
Conventional optical devices based on geometric optics or diffractive optics have a rather limited way to control the turning and splitting of the light beam due to limitations in structural size and inherent optical properties. For example, blazed gratings, which are the effect of dispersive diffraction periods, split light of different frequencies into different diffraction angles. Due to the great advances in nanofabrication technology, the super-surface has created unprecedented possibilities for arbitrarily manipulating optics and photonics as a new class of planar optical elements. A wide range of optical applications has rapidly been demonstrated, including nano-printing, beam deflection/splitting, superlenses, holography and Orbital Angular Momentum (OAM) beams. In essence, the inherent principle behind obtaining various applications is to control the frequency, phase, amplitude, polarization state, etc. of light. However, another general property of light, the wave-vector direction (k-direction), has not been fully exploited in multifunctional hypersurfaces. Conventional hypersurfaces have exactly the same optical transmission and function for both forward and reverse incidence of the wave vector. For a single layer super-surface, due to geometric symmetry, there is the same response for transmitted light incident in both directions. Breaking this symmetry is critical in applications such as optical isolators in optical communication systems or for protecting high power laser equipment. Therefore, a nonreciprocal hypersurface is not yet available to break the symmetry of transmission and create a new degree of freedom, i.e. to generate different bidirectional functions when incident in forward and reverse directions. Such asymmetric behavior is mainly exhibited in that only the dispersion phenomenon is exhibited, and the frequency components of the optical wave can be analyzed, such as a spectrometer, and the like.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a bidirectional holographic modulation method of a single-layer nano structure in a broadband visible light range. The invention provides a Janus super-surface structure with a wide band encrypted freely in a visible light range in a two-way mode through single-layer nano textures.
The technical scheme provided by the invention is as follows:
the invention provides a bidirectional holographic image display method of a single-layer nano structure in a super-surface-based broadband visible light range, which comprises the following steps:
(1) constructing a unit structure for forming a super surface: wherein the structure is a two-layer structure, and the two layers comprise a substrate and a nano brick arranged on the substrate; the super surface is formed by a plurality of unit structures which are periodically arranged on the same plane; the nano bricks in the unit structure have independently set size parameters;
(2) scanning the sizes of different unit structures by setting working wavelength by adopting an electromagnetic simulation tool to obtain the relationship between the size and the phase of the nano-brick under different linearly polarized light;
(3) designing two phase type holographic patterns, converting phase information of the two phase type holographic patterns into size parameters under two polarized lights, and arranging unit structures to construct a super surface;
(4) and a layer of half-wave plate film is covered on the super surface, and the bidirectional holographic display of the single-layer nano structure in the broadband visible light range is realized by changing the direction of incident light.
Further, the nano brick and the substrate in the step (1) are both in a cuboid structure; wherein the cross section of the substrate is square; the sizes of the substrates of the unit structures are the same.
Further, the substrate of the unit structure is constructed of a low refractive index and transparent optical material including MgF2、Al2O3、SiO2The material of the nano brick comprises TiO2、Si、Ag、Au、Cu、Al。
Further, the size parameters in the steps (1) and (2) comprise the length L, the width W, the height H and the side length P of the cross section of the substrate.
Further, a xoy rectangular coordinate system is established by taking the right-angle sides of the top surface of the substrate as an x axis and a y axis and the vertex as an origin, wherein the dimension of the nano brick along the x axis is L, and the dimension of the nano brick along the y axis is W; when the x-polarized light is incident, the phase change is caused by L; when the y-polarized light is incident, the phase change is caused by W.
Further, the method for converting the information of the two holographic images into the information of the size of the nano brick in the step (3) is as follows: under the working wavelength, the structural units with the nano bricks with different sizes have different phases, and the relation between the sizes and the phases of the nano bricks is obtained through scanning; and then establishing a one-to-one correspondence relationship between the pixel in the holographic image and the size of each unit structure, and finally realizing different polarization storage of different holographic image information.
Further, a layer of half-wave plate film covers the super surface, polarization multiplexing is converted into direction multiplexing, and emergent light forms two completely independent encrypted holographic images in the positive and negative directions only by changing the direction of incident light.
A second aspect of the invention provides a super-surface modulated using the method of the first aspect.
The working principle of the invention is as follows:
1. structural size parameter of scanning unit
The dielectric nano brick array super surface is formed by periodically arraying a plurality of nano brick unit structures on a plane;
the unit structure comprises a two-layer structure which is a substrate and a top layer from bottom to top in sequence;
wherein,
the substrate is a square with a rectangular top surface;
the top layer is a nano brick;
the top sides of the substrates are the same in length;
establishing a xoy rectangular coordinate system by taking the right-angle sides of the top surface of the substrate as an x axis and a y axis, wherein the dimension of the nano brick along the x axis is L, and the dimension along the y axis is W; l and W are in the range of 0-300 nm;
the period P of the unit structure is the side length of the top surface of the dielectric layer;
and scanning the relation between the size and the phase of the nano brick by an electromagnetic simulation method. For the substrate-nanoblock structure, the structural parameters include the length L, width W, height H and period P of the nanoblock, and the operation mode is transmissive.
2. Pattern information translation
When the polarization multiplexing super surface is realized, the length L and the width W of the nano bricks in the array respectively correspond to the holographic code under one polarization. The length and width arrangement size of the nano brick array is optimized, the phase control of an emergent light field can be realized, and corresponding four-step Fourier holography is designed. After the construction of the super surface is completed, a layer of half-wave plate film is covered on the super surface, polarization multiplexing is converted into direction multiplexing, and emergent light can form encrypted holographic imaging with completely independent front and back directions only by changing the direction of incident light.
The element of the invention has the following advantages and beneficial effects:
(1) two-channel holography which converts polarization multiplexing into direction multiplexing.
(2) The bidirectional encrypted information transmission is realized in the whole visible frequency range.
(3) Has an unprecedented wide bandwidth in the visible range and great simplicity in structural design and fabrication of single-layer nanostructures, rather than requiring multilayer coupling or alignment as in previous work.
(4) The unit structure of the element of the invention has ultramicro size, can promote to increase the information coding capacity, and the holographic multiplexing channel can be widely applied to the fields of telecommunication, encryption, information processing, communication and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of a unit according to the present invention
FIG. 2 is an SEM image of the array arrangement of the unit structures in the present invention
FIG. 3 is a schematic diagram of different holographic images formed by normal incidence and reverse incidence in an embodiment of the present invention
FIG. 4 is a schematic diagram of an optical measurement setup for a non-reciprocal hologram with forward and reverse incidence by sample rotation in an embodiment of the invention
FIG. 5 is a hologram for measuring different illumination directions and wavelengths according to an embodiment of the present invention
In the figure, 1-nano brick; 2-a substrate; l is the length of the nano brick, H is the height of the nano brick, and W is the width of the nano brick.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention and/or the technical solutions in the prior art, the following description will explain specific embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings described below are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from them without inventive effort. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
The embodiment is a bidirectional holographic display method of a single-layer nano structure in a broadband visible light range and application thereof.
Fig. 1 shows a unit structure, which is a two-layer structure including a substrate and a nano-roller disposed thereon. Cell structures with independent dimensional parameters are periodically arranged in the x-direction and y-direction, as shown in fig. 2, to form a silicon geometry array. Fig. 3 shows a two-way element hologram function for displaying an image of an actual traffic scene (traffic sign), that is, when a polarized light beam is vertically incident on an array surface from the front of the array, the light beam sequentially passes through a substrate, a nano-brick and a half-wave plate film, and the emergent light beam forms a hologram of a STOP sign; a beam of light with the same polarization direction is perpendicularly incident to the surface of the array in the opposite direction, the light sequentially passes through the half-wave plate film, the nano-brick and the substrate, and emergent light forms a hologram painted with a 90-degree speed limit sign. Fig. 4 shows a schematic diagram of an optical measurement setup for a two-way hologram, with both sides incident by means of sample rotation. Fig. 5 shows a holographic image of selected wavelengths (blue, green and red) in the visible range with forward and reverse incidence.
In order to facilitate understanding of the technical scheme of the present invention, the technical principle that the structure of the present invention can realize the bidirectional holography of the single-layer nanostructure in the broadband visible light range is described in detail as follows:
the geometry of the nano-unit structures on the glass substrate, along the light polarization direction, determines their resonance phase shift. Based on this, the single-layer super-surface designed by this embodiment includes a plurality of unit structures with different dimensional parameters, and the length and width thereof are between 80nm and 270 nm. Such a rectangular array can be viewed as an integration of two independent arrays. And establishing a xoy rectangular coordinate system by taking the right-angle sides of the top surface of the substrate as an x axis and a y axis, wherein the dimension of the nano brick along the x axis is L, and the dimension along the y axis is W. On one hand, the interface phase gradient felt when x-polarized incidence is caused by the gradual change of the length L of the nano brick; on the other hand, the perceived phase gradient at the incidence of the y-polarization is caused by a gradual change in the width W of the nanoblock. Therefore, due to the different phase variation tendencies experienced by incident light of different polarizations, the super-surface will develop different optical properties, i.e., a polarization-multiplexed super-surface, when incident light of two different polarizations passes through the super-surface.
To achieve bidirectional holography of a single-layer nanostructure in the broadband visible range, this embodiment combines a polarization multiplexing super-surface with a commercial half-wave plate film. When the x-polarized light is used for positive incidence, emergent light forms a hologram through the polarization multiplexing super surface firstly, and then is converted into y polarization through the half-wave plate; when the back incidence is carried out by using the x-polarized light, the emergent light is firstly changed into y polarization through a half-wave plate, and the y-polarized light forms another hologram after passing through the polarization multiplexing super surface.
In order to fully show the degree of freedom of bidirectional encryption, the embodiment shows the direction-independent holography, and may have a wide application scene in the aspects of expanding information storage and wave vector multiplexing. The conceptual view of the two-way asymmetric holography of this embodiment shows that it can display two different traffic signs in two directions simultaneously. In an actual two-way traffic on highway scene, the illuminated holographic image will be projected onto the windshield of the forward driving vehicle and will show the "STOP" symbol, while the other driver driving on the other side will be projected and shown the speed limit symbol "90".
In summary, the present invention provides a novel bi-directional super-surface design that includes only a single super-surface layer and a commercial half-wave plate film. The modulation method provided by the invention skillfully converts polarization multiplexing into direction multiplexing by means of hybridization of two independent nano bricks. Therefore, the encrypted holographic imaging which is completely independent in the front direction and the back direction can be formed simultaneously. Therefore, the anti-counterfeiting optical fiber can be used as a device for enhancing anti-counterfeiting application of non-reciprocal information processing, optical metering and encryption/decryption security.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art within the technical scope of the present invention should be included in the scope of the present invention.
Claims (9)
1. The bidirectional holographic modulation method based on the broadband visible light nanometer super surface is characterized by comprising the following steps of:
(1) constructing a unit structure for forming a super surface: wherein the structure is a two-layer structure, and the two layers comprise a substrate and a nano brick arranged on the substrate; the super surface is formed by a plurality of unit structures which are periodically arranged on the same plane; the nano bricks in the unit structure have independently set size parameters;
(2) scanning the sizes of different unit structures by setting working wavelength by adopting an electromagnetic simulation tool to obtain the relationship between the size and the phase of the nano-brick under different linearly polarized light;
(3) designing two phase type holographic patterns, converting phase information of the two phase type holographic patterns into size parameters under two polarized lights, and arranging unit structures to construct a super surface;
(4) and a layer of half-wave plate film is covered on the super surface, and the bidirectional holographic display of the single-layer nano structure in the broadband visible light range is realized by changing the direction of incident light.
2. The modulation method according to claim 1, characterized in that: in the step (1), the nano brick and the substrate are both in a cuboid structure; wherein the cross section of the substrate is square; the sizes of the substrates of the unit structures are the same.
3. The modulation method according to claim 1, characterized in that: the substrate of the unit structure is constructed of a transparent optical material with a low refractive index, the material including MgF2、Al2O3、SiO2The material of the nano brick comprises TiO2、Si、Ag、Au、Cu、Al。
4. The modulation method according to claim 1, characterized in that: the size parameters in the steps (1) and (2) comprise the length L, the width W, the height H and the side length P of the cross section of the substrate.
5. The modulation method according to claim 4, wherein a xoy rectangular coordinate system is established with the rectangular sides of the top surface of the substrate as the x-axis and the y-axis and the vertex as the origin, and the nanoblock has a length L along the x-axis and a width W along the y-axis; when the x-polarized light is incident, the phase change is caused by L; when the y-polarized light is incident, the phase change is caused by W.
6. The modulation method according to claim 1, characterized in that: the method for converting the information of the two holographic images into the information of the size of the nano brick in the step (3) comprises the following steps: under the working wavelength, the structural units with the nano bricks with different sizes have different phases, and the relation between the sizes and the phases of the nano bricks is obtained through scanning; and then establishing a one-to-one correspondence relationship between the pixel in the holographic image and the size of each unit structure, and finally realizing different polarization storage of different holographic image information.
7. The modulation method according to claim 1, characterized in that: the super surface is covered with a layer of half-wave plate film, polarization multiplexing is converted into direction multiplexing, and emergent light forms two completely independent encrypted holographic images in the front and back directions only by changing the direction of incident light.
8. The super surface capable of realizing the bidirectional holographic image display of the single-layer nano structure in the broadband visible light range is characterized in that: prepared by the method of any one of claims 1 to 7.
9. Use of the metasurface of claim 8 for non-reciprocal information processing, optical metrology and security enhanced anti-counterfeiting of encryption/decryption.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110732897.7A CN113406729B (en) | 2021-06-30 | 2021-06-30 | Bidirectional holographic modulation method based on broadband visible light nanometer super surface and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110732897.7A CN113406729B (en) | 2021-06-30 | 2021-06-30 | Bidirectional holographic modulation method based on broadband visible light nanometer super surface and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113406729A true CN113406729A (en) | 2021-09-17 |
| CN113406729B CN113406729B (en) | 2022-09-13 |
Family
ID=77680343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110732897.7A Expired - Fee Related CN113406729B (en) | 2021-06-30 | 2021-06-30 | Bidirectional holographic modulation method based on broadband visible light nanometer super surface and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113406729B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108803292A (en) * | 2018-05-28 | 2018-11-13 | 中国科学院大学 | A kind of palarization multiplexing holographic imaging method based on the super surface of transmission-type all dielectric |
| CN110531458A (en) * | 2019-08-29 | 2019-12-03 | 武汉大学 | A kind of super surface of achievable nonreciprocity function |
| CN110568528A (en) * | 2019-08-29 | 2019-12-13 | 武汉大学 | Double-mode super surface based on SOI material and double-mode display application thereof |
| CN111258060A (en) * | 2020-03-05 | 2020-06-09 | 武汉大学 | Super surface design method capable of realizing transflective dual-channel holographic multiplexing |
| CN111399088A (en) * | 2020-03-25 | 2020-07-10 | 武汉大学 | Three-channel image display method based on micro-nano polarizer array super-surface |
| US20200356047A1 (en) * | 2017-11-24 | 2020-11-12 | University Court Of The University Of St Andrews | Holographic device |
-
2021
- 2021-06-30 CN CN202110732897.7A patent/CN113406729B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200356047A1 (en) * | 2017-11-24 | 2020-11-12 | University Court Of The University Of St Andrews | Holographic device |
| CN108803292A (en) * | 2018-05-28 | 2018-11-13 | 中国科学院大学 | A kind of palarization multiplexing holographic imaging method based on the super surface of transmission-type all dielectric |
| CN110531458A (en) * | 2019-08-29 | 2019-12-03 | 武汉大学 | A kind of super surface of achievable nonreciprocity function |
| CN110568528A (en) * | 2019-08-29 | 2019-12-13 | 武汉大学 | Double-mode super surface based on SOI material and double-mode display application thereof |
| CN111258060A (en) * | 2020-03-05 | 2020-06-09 | 武汉大学 | Super surface design method capable of realizing transflective dual-channel holographic multiplexing |
| CN111399088A (en) * | 2020-03-25 | 2020-07-10 | 武汉大学 | Three-channel image display method based on micro-nano polarizer array super-surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113406729B (en) | 2022-09-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hu et al. | Trichromatic and tripolarization-channel holography with noninterleaved dielectric metasurface | |
| Shi et al. | Augmented reality enabled by on‐chip meta‐holography multiplexing | |
| Li et al. | Large-area metasurface on CMOS-compatible fabrication platform: driving flat optics from lab to fab | |
| CN110618535B (en) | Polarized multi-channel super-structure surface optical element and method for reconstructing full-color holographic image | |
| US9739918B2 (en) | Simultaneous polarization and wavefront control using a planar device | |
| Li et al. | Advances in exploiting the degrees of freedom in nanostructured metasurface design: from 1 to 3 to more | |
| Ding | A Review of Multifunctional Optical Gap-Surface Plasmon Metasurfaces. | |
| US20010012149A1 (en) | Optical elements comprising photonic crystals and applications thereof | |
| CN110531458B (en) | Super surface capable of realizing nonreciprocal function | |
| TW201917476A (en) | Liquid crystal devices and methods for manufacturing the same | |
| Tang et al. | Flat multifunctional liquid crystal elements through multi-dimensional information multiplexing | |
| Wan et al. | A review of dielectric optical metasurfaces for spatial differentiation and edge detection | |
| Liu et al. | On-chip integrated metasystem with inverse-design wavelength demultiplexing for augmented reality | |
| Mikhailov et al. | Dispersing light with surface plasmon polaritonic crystals | |
| JP3702445B2 (en) | Optical element and apparatus using the optical element | |
| Guo et al. | Broad-tuning, dichroic metagrating Fabry-Perot filter based on liquid crystal for spectral imaging | |
| Deng et al. | Metasurface holography | |
| US11675219B1 (en) | Multifunctional resonant and leaky-wave metasurfaces based on symmetry-breaking perturbations | |
| CN113406729B (en) | Bidirectional holographic modulation method based on broadband visible light nanometer super surface and application | |
| Yang et al. | On-chip metasurface for optical directional rectification | |
| Wang et al. | Dynamic Spatial-Selective Metasurface with Multiple-Beam Interference | |
| CN110531528A (en) | Three-dimensional display apparatus | |
| CN218547139U (en) | Super-structured optical waveguide and near-to-eye display device | |
| CN215417256U (en) | Silicon chip dual anti-counterfeiting mark based on super surface material | |
| CN111399087A (en) | Super surface based on medium nano brick array and method for realizing information multiplexing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220913 |