CN115047547A - Construction method of double-frequency terahertz space wave control device - Google Patents
Construction method of double-frequency terahertz space wave control device Download PDFInfo
- Publication number
- CN115047547A CN115047547A CN202210587010.4A CN202210587010A CN115047547A CN 115047547 A CN115047547 A CN 115047547A CN 202210587010 A CN202210587010 A CN 202210587010A CN 115047547 A CN115047547 A CN 115047547A
- Authority
- CN
- China
- Prior art keywords
- super
- constructing
- frequency
- cell group
- cells
- 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
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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Aerials With Secondary Devices (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a construction method of a double-frequency terahertz space wave control device, belonging to the technical field of metamaterial devices and terahertz, and comprising the following steps of: constructing a super-surface cellular based on a full-dielectric material; respectively constructing a first super surface and a second super surface based on the super surface cells; the first super surface and the second super surface are subjected to space interweaving to obtain a third super surface, and the structure of the double-frequency terahertz space wave control device is completed; the super-surface cellular structure is constructed based on the full-medium rectangular strips separated by fracture, cellular structure axes working at different frequency points are orthogonal, so that the space, the geometric center and the size of the interwoven cellular structure are unchanged, the structure is compact, crosstalk is weak, and the problem that wave front control of two terahertz frequency points is difficult to realize through one super-surface is solved.
Description
Technical Field
The invention belongs to the technical field of metamaterial devices and terahertz, and particularly relates to a construction method of a double-frequency terahertz space wave control device.
Background
Optical super-surfaces are one of the important subjects of modern micro-nano photonics research, and optical information can be manipulated in a spatial domain by controlling electromagnetic wave characteristics (including frequency, polarization, amplitude and phase) and photonic characteristics (such as orbital angular momentum and spin angular momentum) of light. Due to the special light manipulation characteristic, the optical super-surface has wide application prospect in the fields of information optics, quantum optics, imaging optics and the like, and has higher research value.
In recent years, spatially interleaved superfaces have been proposed by optimizing structural designs and spatial layouts. A spatially interleaved hypersurface may be viewed as a collection of two or more hypersurfaces. The spatially interwoven super surfaces can retain the original functionality of the super surface prior to spatial interweaving, and can also induce destructive or constructive interference to generate new functionality; thus, spatially interleaved metasurfaces generally exhibit greater steering capabilities than ordinary metasurfaces in terms of polarization, phase, orbital angular momentum, spin angular momentum and the multiple physical properties of the waves. However, at present, the problems of insufficient cellular integration and high crosstalk caused by the fact that wavefront control and interweaving super-surface structure overlapping are carried out on two terahertz frequency points through one super-surface are urgently needed to be solved.
Disclosure of Invention
Aiming at the defects in the prior art, the construction method of the double-frequency terahertz space wave control device provided by the invention solves the problem that the wavefront control of two terahertz frequency points is difficult to realize through a super surface.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
the invention provides a construction method of a double-frequency terahertz space wave control device, which comprises the following steps:
s1, constructing the super-surface unit cell based on the all-dielectric material;
s2, respectively constructing a first super surface and a second super surface based on the super surface cells;
and S3, spatially interweaving the first super surface and the second super surface to obtain a third super surface, and completing the construction of the dual-frequency terahertz spatial wave control device.
The invention has the beneficial effects that: the construction method of the double-frequency terahertz space wave control device provided by the invention constructs the super-surface cells based on the full-medium rectangular strips separated by fracture, and the cell structure axes working at different frequency points are orthogonal, so that the space, the geometric center and the size of the interwoven cells are unchanged, the structure is compact, the crosstalk is weak, and the third super-surface constructed by the method can independently control the space light beam propagation attributes of two terahertz frequencies, which cannot be realized by a common wavefront control super-structure device.
Further, the step S1 includes the following steps:
s11, constructing rectangular strip cells based on the all-dielectric material;
s12, respectively obtaining a first separation structure and a second separation structure by transversely breaking and separating and longitudinally breaking rectangular strip cells;
and S13, enabling the structure axes of the first separation structure and the second separation structure to be orthogonal to each other to obtain the super-surface unit cell.
The beneficial effect of adopting the further scheme is as follows: the cell space and the geometric center obtained after interweaving are ensured to be unchanged by taking the full-medium rectangular strips separated by fracture as a basic structure and orthogonalizing the structural axes of two types of separation structures working at different frequency points.
Further, the rectangular strip unit cells comprise the following structural parameters:
the substrate thickness h1 is 300 μm;
the height h2 of the medium column is 200 μm;
the cell lattice constant P is 160 μm.
The beneficial effect of adopting the further scheme is as follows: the super-surface cellular cells obtained by fracture separation are equivalent to the rectangular strip cellular cells, the structural parameters of the super-surface cellular cells are still consistent with the length and width of a complete rectangular strip, and the interweaved structure can be free of overlapping, compact in structure and weak in intercellular crosstalk through proper parameter design of the rectangular strip cellular cells.
Further, the step S2 includes the following steps:
s21, respectively constructing a first cell group working at a first frequency and a second cell group working at a second frequency based on the super-surface cells;
s22, respectively constructing a first super-surface phase profile and a second super-surface phase profile:
wherein the content of the first and second substances,
and
respectively representing a first and a second meta-surface phase profile, λ 1 And λ 2 Respectively representing a first frequency and a second frequency, x 1 And y 1 Respectively representing the abscissa and ordinate points, x, of the first super-surface 0 And y 0 Respectively representing the projection abscissa and the projection ordinate, x, of the spatial beam focus on the first metasurface 2 And y 2 Respectively represent an abscissa point and an ordinate point, x 'of the second super-surface' 0 And y' 0 Representing the projection abscissa and the projection ordinate, f, of the spatial beam focus on the second metasurface, respectively 1 And f 2 Each representing the focus of a spatial light beam of the first super-surfaceA focal length from the spatial beam focus of the second super-surface, δ representing an azimuth angle;
s23, constructing a first super surface according to the first super surface phase profile by utilizing the first cell group;
and S24, constructing a second super-surface according to the second super-surface phase profile by using the second cell group.
The beneficial effect of adopting the above further scheme is that: the super-surface cells are used for respectively setting a first cell group and a second cell group according to different working frequencies, and a first super-surface and a second super-surface are respectively constructed through the first cell group and the second cell group, so that a basis is provided for constructing a third super-surface capable of realizing double-frequency terahertz wave front control.
Further, the first cell group and the second cell group both comprise a uniform number of super-surface cells; the relative phase shift coverage of the super-surface unit cells in the first unit cell group is 0-2 pi; the relative phase shift coverage of the super-surface unit cells in the second unit cell group is 0-2 pi.
The beneficial effect of adopting the further scheme is as follows: the relative phase shift of a group of cells working at the same frequency point covers 0-2 pi, and the structural axes are oriented consistently; however, the structural axes of the two groups of cells with different working frequencies are orthogonal, so the space and the geometric center of the interwoven cells are unchanged.
Drawings
Fig. 1 is a flowchart illustrating steps of a method for constructing a dual-frequency terahertz spatial wave manipulation device according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of a super-surface unit cell constructed based on an all-dielectric material according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a third super-surface obtained by spatially interleaving a first super-surface and a second super-surface in the embodiment of the present invention.
FIG. 4 is a functional diagram of spatially interleaving superscalar surfaces, in accordance with an embodiment of the present invention.
Fig. 5(a) is a schematic diagram of two super-surface space interleaves working at different frequency points in the embodiment of the present invention.
FIG. 5(b) is a scanning electron microscope image and an actual sample image of a spatially interlaced super-surface in an embodiment of the present invention.
Fig. 5(c) is a schematic diagram of a first result of simulation and experimental test of a dual-frequency terahertz spatial wave manipulation device in an embodiment of the present invention;
fig. 5(d) is a schematic diagram of a second result of simulation and experimental test of the dual-frequency terahertz spatial wave manipulation device in the embodiment of the present invention;
fig. 5(e) is a schematic diagram of a third result of simulation and experimental test of the dual-frequency terahertz spatial wave manipulation device in the embodiment of the present invention;
fig. 5(f) is a diagram illustrating a fourth result of simulation and experimental test of the dual-frequency terahertz spatial wave manipulation device in the embodiment of the present invention;
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
Example 1
As shown in fig. 1, in one embodiment of the present invention, the present invention provides a method for constructing a dual-frequency terahertz spatial wave manipulation device, including the steps of:
s1, constructing the super-surface unit cell based on the all-dielectric material;
the step S1 includes the following steps:
s11, constructing rectangular strip unit cells based on the all-dielectric material;
s12, respectively obtaining a first separation structure and a second separation structure by transversely breaking and separating and longitudinally breaking rectangular strip cells;
s13, enabling the structure axes of the first separation structure and the second separation structure to be orthogonal to each other to obtain a super-surface unit cell;
the rectangular strip unit cells comprise the following structural parameters:
the substrate thickness h1 is 300 μm;
the height h2 of the medium column is 200 μm;
the lattice constant P of the unit cell is 160 mu m;
s2, respectively constructing a first super surface and a second super surface based on the super surface cells;
the step S2 includes the following steps:
s21, respectively constructing a first cell group working at a first frequency and a second cell group working at a second frequency based on the super-surface cells;
s22, respectively constructing a first super-surface phase profile and a second super-surface phase profile:
wherein the content of the first and second substances,
and
respectively representing a first and a second meta-surface phase profile, λ 1 And λ 2 Respectively representing a first frequency and a second frequency, x 1 And y 1 Respectively representing the abscissa and ordinate points, x, of the first super-surface 0 And y 0 Respectively representing the projection abscissa and the projection ordinate, x, of the spatial beam focus on the first metasurface 2 And y 2 Respectively represent an abscissa point and an ordinate point, x 'of the second metasurface' 0 And y' 0 Representing respectively the projection abscissa and the projection ordinate, f, of the spatial beam focus on the second metasurface 1 And f 2 Respectively representing the focal length of the spatial beam focus of the first super-surface and the focal length of the spatial beam focus of the second super-surface, δ representing the azimuth angle;
s23, constructing a first super surface according to the first super surface phase profile by utilizing the first cell group;
s24, constructing a second super surface according to the second super surface phase profile by using the second cell group;
the first cell group and the second cell group both comprise super-surface cells with the same number; the relative phase shift coverage of the super-surface unit cells in the first unit cell group is 0-2 pi; the relative phase shift coverage of the super-surface unit cells in the second unit cell group is 0-2 pi;
and S3, spatially interweaving the first super surface and the second super surface to obtain a third super surface, and completing the construction of the dual-frequency terahertz spatial wave control device.
The construction method of the double-frequency terahertz space wave control device provided by the invention constructs the super-surface cells based on the full-medium rectangular strips separated by fracture, and the cell structure axes working at different frequency points are orthogonal, so that the space, the geometric center and the size of the interwoven cells are unchanged, the structure is compact, the crosstalk is weak, and the third super-surface constructed by the method can independently control the space light beam propagation attributes of two terahertz frequencies, which cannot be realized by a common wavefront control super-structure device.
Example 2
In one practical example of the invention, the invention uses a high-resistance silicon all-dielectric material with the resistivity of 0.03S/m and the dielectric constant of 11.9 to construct rectangular strip unit cells;
as shown in fig. 2, the rectangular stripe cell substrate has a thickness h1 of 300 μm, a dielectric column height h2 of 200 μm, and a cell lattice constant P of 160 μm, and the first separation structure and the second separation structure are obtained by performing lateral fracture separation and longitudinal fracture separation on the rectangular stripe cells, respectively; and (3) enabling the structure axes of the first separation structure and the second separation structure to be orthogonal to each other to obtain the super-surface unit cell.
Respectively constructing a first cell group working at 0.8THz and a second cell group working at 1THz on the basis of the super-surface cells; each group of super surface cells is six in number, and the relative phase shift of the six super surface cells working at the same frequency point covers 0-2 pi; but the structural axes of the two groups of cells are orthogonal, wherein the structural axis of the cell group working at 0.8THz is oriented along the Y direction in the space coordinate system, and the structural axis of the cell working at 1THz is oriented along the X direction in the space coordinate system; and because the super-surface cellular is constructed by breaking and separating rectangular strip cellular, the super-surface cellular is equivalent to a complete rectangular strip cellular, and the structural parameters of the super-surface cellular are consistent with the length parameter l and the width parameter W of a single complete rectangular cellular, as shown in table 1:
TABLE 1
As shown in fig. 3, the first and second meta-surface phase profiles are constructed separately:
wherein the content of the first and second substances,
and
respectively representing a first and a second meta-surface phase profile, λ 1 And λ 2 Respectively representing a first frequency and a second frequency, x 1 And y 1 Respectively representing the abscissa and ordinate points, x, of the first super-surface 0 And y 0 Respectively representing the projection abscissa and the projection ordinate, x, of the spatial beam focus on the first metasurface 2 And y 2 Respectively represent an abscissa point and an ordinate point, x 'of the second metasurface' 0 And y' 0 Representing the projection abscissa and the projection ordinate, f, of the spatial beam focus on the second metasurface, respectively 1 And f 2 Respectively representThe focal length of the spatial beam focus of the first super-surface and the focal length of the spatial beam focus of the second super-surface, δ representing the azimuth angle;
the super-surface phase profile working at 0.8THz is a first super-surface phase profile, the super-surface phase profile working at 1THz is a second super-surface phase profile, a first super-surface is constructed by utilizing the first cell group according to the first super-surface phase profile, and a second super-surface is constructed by utilizing the second cell group according to the second super-surface phase profile;
the phases of the first super-surface and the second super-surface respectively represent a vortex focusing function with an azimuth angle delta and a topological charge of 2 and a pure focusing function;
spatially interweaving the first super surface and the second super surface to obtain a third super surface, wherein the structural axis of the super surface cell group working at 0.8THz is oriented along the Y direction in a spatial coordinate system, and the structural axis of the cell working at 1THz is oriented along the X direction in the spatial coordinate system; the space of the interwoven cellular is unchanged, the geometric center is unchanged, and the structure is not overlapped, as shown in fig. 3;
as shown in fig. 4, a third super surface obtained by interweaving the first super surface and the second super surface can work at two frequency points, and the focal lengths and the focuses of the two frequency points are different; a hypersurface operating at f2 ═ 0.8THz exhibits a vortex focus aperture with a central dark point of topological charge of 2; a metasurface operating at f 1-1 THz exhibits a purely focused spot;
as shown in fig. 5(a) and 5(b), for the experimental sample interleaving procedure and results, the super-surface simulation and experimental results for 0.8THz monitoring are shown in fig. 5(c) and 5(d), a focusing aperture with a central dark spot, a topological charge of 2, can be observed, and the results are consistent with the expectations. The results of the simulation and experiment of the super surface monitored by 1THz are shown in fig. 5(e) and 5(f), a pure focusing light spot can be observed, the result is consistent with the expectation, and the results of the experiment and the simulation show that the super surface successfully realizes the wavefront control of two terahertz frequency points.
The cells used in the invention are based on full-medium rectangular strips separated by fracture, each super-surface cell is formed by ingeniously interweaving two cell classification structures working at different frequencies in space, the geometrical center of each cell before interweaving is reserved in the super-surface cell obtained after interweaving, the size of the cell is unchanged, the structure is compact, and crosstalk is weak; the dual-frequency terahertz space wave control device constructed according to the method can independently control the space beam propagation attribute of two terahertz frequencies, which cannot be realized by a common wavefront control super-structure device, has higher integration and wider application range, and opens up a new way for space terahertz wave control.
Claims (5)
1. A construction method of a double-frequency terahertz space wave manipulation device is characterized by comprising the following steps:
s1, constructing the super-surface unit cell based on the full-medium material;
s2, respectively constructing a first super surface and a second super surface based on the super surface cells;
and S3, spatially interweaving the first super surface and the second super surface to obtain a third super surface, and completing the construction of the dual-frequency terahertz spatial wave control device.
2. The method of constructing a dual-frequency terahertz spatial wave manipulation device according to claim 1, wherein the step S1 includes the steps of:
s11, constructing rectangular strip unit cells based on the all-dielectric material;
s12, respectively obtaining a first separation structure and a second separation structure by transversely breaking and separating and longitudinally breaking rectangular strip cells;
and S13, enabling the structure axes of the first separation structure and the second separation structure to be orthogonal to each other to obtain the super-surface unit cell.
3. The method for constructing a dual-frequency terahertz spatial wave manipulation device according to claim 2, wherein the rectangular strip unit cells include the following structural parameters:
the substrate thickness h1 is 300 μm;
the height h2 of the medium column is 200 μm;
the cell lattice constant P was 160 μm.
4. The method of constructing a dual-frequency terahertz spatial wave manipulation device according to claim 3, wherein the step S2 includes the steps of:
s21, respectively constructing a first cell group working at a first frequency and a second cell group working at a second frequency based on the super-surface cells;
s22, respectively constructing a first super-surface phase profile and a second super-surface phase profile:
wherein the content of the first and second substances,
and
respectively representing a first and a second meta-surface phase profile, λ 1 And λ 2 Respectively representing a first frequency and a second frequency, x 1 And y 1 Respectively representing the abscissa and ordinate points, x, of the first super-surface 0 And y 0 Respectively representing the projection abscissa and the projection ordinate, x, of the spatial beam focus on the first metasurface 2 And y 2 Respectively represent an abscissa point and an ordinate point, x 'of the second metasurface' 0 And y' 0 Representing the projection abscissa and the projection ordinate, f, of the spatial beam focus on the second metasurface, respectively 1 And f 2 Respectively representing the focal length of the spatial beam focus of the first super-surface and the focal length of the spatial beam focus of the second super-surface, delta representing the azimuth angle;
s23, constructing a first super surface according to the first super surface phase profile by utilizing the first cell group;
and S24, constructing a second super-surface according to the second super-surface phase profile by using the second cell group.
5. The method of constructing a dual-frequency terahertz spatial wave manipulation device according to claim 4, wherein the first cell group and the second cell group each include a uniform number of super-surface cells; the relative phase shift coverage of the super-surface unit cells in the first unit cell group is 0-2 pi; the relative phase shift coverage of the super-surface unit cells in the second unit cell group is 0-2 pi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210587010.4A CN115047547B (en) | 2022-05-26 | 2022-05-26 | Construction method of dual-frequency terahertz space wave control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210587010.4A CN115047547B (en) | 2022-05-26 | 2022-05-26 | Construction method of dual-frequency terahertz space wave control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115047547A true CN115047547A (en) | 2022-09-13 |
| CN115047547B CN115047547B (en) | 2023-07-11 |
Family
ID=83159006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210587010.4A Active CN115047547B (en) | 2022-05-26 | 2022-05-26 | Construction method of dual-frequency terahertz space wave control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115047547B (en) |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401933A (en) * | 2014-11-04 | 2015-03-11 | 天津大学 | Method for constructing multistage ordered microstructure through combination of wetting removal process and template process |
| US20160156090A1 (en) * | 2011-09-20 | 2016-06-02 | Sandia Corporation | Flat optics enabled by dielectric metamaterials |
| CN206727193U (en) * | 2017-04-21 | 2017-12-08 | 南京信息工程大学 | A kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces |
| CN108172963A (en) * | 2017-12-26 | 2018-06-15 | 中国计量大学 | A kind of all dielectric surpasses the transparent resonance device of surface electromagnetically induced |
| WO2019018035A1 (en) * | 2017-04-17 | 2019-01-24 | Purdue Research Foundation | Ultrafast laser beam steering using frequency-arrayed optics |
| US20190140350A1 (en) * | 2017-11-08 | 2019-05-09 | Searete Llc | Metamaterial phase shifters |
| CN111427171A (en) * | 2020-04-08 | 2020-07-17 | 电子科技大学 | Dual-mode terahertz wave beam modulator based on dielectric super-surface, method and application |
| WO2020177843A1 (en) * | 2019-03-01 | 2020-09-10 | Telefonaktiebolaget Lm Ericsson (Publ) | A metasurface arrangement |
| CN111696505A (en) * | 2020-06-01 | 2020-09-22 | 西安交通大学 | Deep sub-wavelength superstructure of sound absorption under annular fluting low frequency |
| EP3800488A1 (en) * | 2019-10-02 | 2021-04-07 | Consiglio Nazionale Delle Ricerche | Optomechanical modulator |
| CN112859230A (en) * | 2021-01-20 | 2021-05-28 | 成都第三象限未来科技有限公司 | Terahertz super-structure focusing lens for realizing one-way spin circular polarization state conversion |
| CN112909566A (en) * | 2021-01-20 | 2021-06-04 | 成都第三象限未来科技有限公司 | Multifunctional vortex stack state generator |
| CN112904469A (en) * | 2021-01-28 | 2021-06-04 | 暨南大学 | Random polarization state polarizing device based on dielectric nano brick super-structured surface |
| CN113013631A (en) * | 2021-02-26 | 2021-06-22 | 成都信息工程大学 | Dual-frequency functional super surface and design method thereof |
| CN113131218A (en) * | 2021-03-29 | 2021-07-16 | 四川大学 | THz broadband switchable super surface for polarization conversion and wavefront regulation |
| CN113517568A (en) * | 2021-05-28 | 2021-10-19 | 成都第三象限未来科技有限公司 | Design method of dual-band spin selective transmission super-surface device |
| CN113972498A (en) * | 2021-10-27 | 2022-01-25 | 中国计量大学 | Bidirectional double-frequency point terahertz modulator-controller |
| CN114062301A (en) * | 2021-11-12 | 2022-02-18 | 西南科技大学 | Dual-band metamaterial terahertz microfluidic sensor |
| CN114397725A (en) * | 2022-01-13 | 2022-04-26 | 天津大学 | Terahertz metamaterial lens capable of directly converting unpolarized waves into circularly polarized waves |
| CN114824813A (en) * | 2022-04-27 | 2022-07-29 | 电子科技大学 | Dual-frequency giant chiral structure for terahertz near-field imaging and design method |
-
2022
- 2022-05-26 CN CN202210587010.4A patent/CN115047547B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160156090A1 (en) * | 2011-09-20 | 2016-06-02 | Sandia Corporation | Flat optics enabled by dielectric metamaterials |
| CN104401933A (en) * | 2014-11-04 | 2015-03-11 | 天津大学 | Method for constructing multistage ordered microstructure through combination of wetting removal process and template process |
| WO2019018035A1 (en) * | 2017-04-17 | 2019-01-24 | Purdue Research Foundation | Ultrafast laser beam steering using frequency-arrayed optics |
| CN206727193U (en) * | 2017-04-21 | 2017-12-08 | 南京信息工程大学 | A kind of dual-band and dual-polarization low pass high resistance type frequency-selective surfaces |
| US20190140350A1 (en) * | 2017-11-08 | 2019-05-09 | Searete Llc | Metamaterial phase shifters |
| CN108172963A (en) * | 2017-12-26 | 2018-06-15 | 中国计量大学 | A kind of all dielectric surpasses the transparent resonance device of surface electromagnetically induced |
| WO2020177843A1 (en) * | 2019-03-01 | 2020-09-10 | Telefonaktiebolaget Lm Ericsson (Publ) | A metasurface arrangement |
| EP3800488A1 (en) * | 2019-10-02 | 2021-04-07 | Consiglio Nazionale Delle Ricerche | Optomechanical modulator |
| CN111427171A (en) * | 2020-04-08 | 2020-07-17 | 电子科技大学 | Dual-mode terahertz wave beam modulator based on dielectric super-surface, method and application |
| CN111696505A (en) * | 2020-06-01 | 2020-09-22 | 西安交通大学 | Deep sub-wavelength superstructure of sound absorption under annular fluting low frequency |
| CN112859230A (en) * | 2021-01-20 | 2021-05-28 | 成都第三象限未来科技有限公司 | Terahertz super-structure focusing lens for realizing one-way spin circular polarization state conversion |
| CN112909566A (en) * | 2021-01-20 | 2021-06-04 | 成都第三象限未来科技有限公司 | Multifunctional vortex stack state generator |
| CN112904469A (en) * | 2021-01-28 | 2021-06-04 | 暨南大学 | Random polarization state polarizing device based on dielectric nano brick super-structured surface |
| CN113013631A (en) * | 2021-02-26 | 2021-06-22 | 成都信息工程大学 | Dual-frequency functional super surface and design method thereof |
| CN113131218A (en) * | 2021-03-29 | 2021-07-16 | 四川大学 | THz broadband switchable super surface for polarization conversion and wavefront regulation |
| CN113517568A (en) * | 2021-05-28 | 2021-10-19 | 成都第三象限未来科技有限公司 | Design method of dual-band spin selective transmission super-surface device |
| CN113972498A (en) * | 2021-10-27 | 2022-01-25 | 中国计量大学 | Bidirectional double-frequency point terahertz modulator-controller |
| CN114062301A (en) * | 2021-11-12 | 2022-02-18 | 西南科技大学 | Dual-band metamaterial terahertz microfluidic sensor |
| CN114397725A (en) * | 2022-01-13 | 2022-04-26 | 天津大学 | Terahertz metamaterial lens capable of directly converting unpolarized waves into circularly polarized waves |
| CN114824813A (en) * | 2022-04-27 | 2022-07-29 | 电子科技大学 | Dual-frequency giant chiral structure for terahertz near-field imaging and design method |
Non-Patent Citations (7)
| Title |
|---|
| FUYU LI 等: "Dual-band terahertz all-silicon metasurface with giant chirality for frequency-undifferentiated near-field imaging", OPTICS EXPRESS * |
| JITAO LI 等: "Diverse terahertz wavefront manipulations empowered by the spatially interleaved metasurfaces", SCIECE CHINA. INFORMATION SCIENCES * |
| NEHA NIHARIKA 等: "Multifunctional metasurface based bandstop and bandpass filters for terahertz radiation", OPTIK * |
| 朱冬颖: "全介质超表面太赫兹吸收器的特性与应用", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 李杰 等: "全介质超表面中的手性太赫兹响应", 太赫兹科学与电子信息学报 * |
| 王荷竹: "相位梯度超表面结构设计与优化", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 闫昕;梁兰菊;张璋;杨茂生;韦德泉;王猛;李院平;吕依颖;张兴坊;丁欣;姚建铨;: "基于石墨烯编码超构材料的太赫兹波束多功能动态调控", 物理学报 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115047547B (en) | 2023-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| He et al. | Multi-band terahertz absorber at 0.1–1 THz frequency based on ultra-thin metamaterial | |
| CN105305091B (en) | Reflection electromagnetic wave modulator based on the super surface of adjustable gradient and its design method | |
| Wen et al. | Broadband metamaterial absorber based on a multi-layer structure | |
| Grbic et al. | Negative refraction, growing evanescent waves, and sub-diffraction imaging in loaded transmission-line metamaterials | |
| Kapoor et al. | Frequency selective surfaces as spatial filters: Fundamentals, analysis and applications | |
| CN110333560A (en) | A kind of broadband Achromatic device surpassing surface based on medium | |
| KR20110071065A (en) | Metamaterials for surfaces and waveguides | |
| Fan et al. | Multi-band tunable terahertz bandpass filter based on vanadium dioxide hybrid metamaterial | |
| CN105552569A (en) | Ultra-thin transmission gradient super-surface-based polarization separator | |
| Soleimani et al. | A novel 2D leaky wave antenna based on complementary graphene patch cell | |
| Yahiaoui et al. | Terahertz metamolecules deposited on thin flexible polymer: design, fabrication and experimental characterization | |
| Lv et al. | Broadband and wide-angle terahertz carpet cloaks based on pattered graphene metasurfaces | |
| Li et al. | Bifunctional circularly-polarized lenses with simultaneous geometrical and propagating phase control metasurfaces | |
| Sheng et al. | Design of frequency selective rasorber with wide transmission/absorption bands | |
| Wang et al. | Broadband and ultrathin Huygens metasurface with high transmittance | |
| Iqbal et al. | Polarization-selective dual-band digital coding metasurface for controls of transmitted waves | |
| Li et al. | Experimental demonstration of 3D printed terahertz polarization-insensitive flat devices based on low-index meta-gratings | |
| Bui et al. | Small-size metamaterial perfect absorber operating at low frequency | |
| Wong et al. | Advances in imaging beyond the diffraction limit | |
| CN115047547B (en) | Construction method of dual-frequency terahertz space wave control device | |
| Xu et al. | Design and optimization of high-efficiency meta-devices based on the equivalent circuit model and theory of electromagnetic power energy storage | |
| Dong et al. | Ultra-wideband and high-performance microwave vortex beam generator based on single-layer Pancharatnam–Berry metasurface with stacked-arc-shaped meta-atoms | |
| Chen et al. | Absorption-transmission-type multifunctional coding metasurface | |
| Liu et al. | A phased array antenna with a broadly steerable beam based on a low-loss metasurface lens | |
| Chen et al. | An all-dielectric 3D Luneburg lens constructed by common-vertex coaxial circular cones |
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 |