CN104993250A - Infrared super enhanced collection antenna based on electromagnetically induced transparency - Google Patents
Infrared super enhanced collection antenna based on electromagnetically induced transparency Download PDFInfo
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- CN104993250A CN104993250A CN201510283716.1A CN201510283716A CN104993250A CN 104993250 A CN104993250 A CN 104993250A CN 201510283716 A CN201510283716 A CN 201510283716A CN 104993250 A CN104993250 A CN 104993250A
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Abstract
The invention provides an infrared super enhanced collection antenna based on electromagnetically induced transparency. The infrared super enhanced collection antenna includes a plurality of antenna units in periodical array distribution. Each antenna unit includes a first resonant unit and a second resonant unit, wherein the resonance frequency of the first resonant unit is identical or similar to that of the second resonance unit. Electromagnetically induced transparency in an infrared band is realized through the coupling effect of the first resonant unit and the second resonance unit, so that efficiency of collection of infrared radiation with target frequency is improved. By adopting the infrared super enhanced collection antenna, energy of incident polarized light can be distributed again and energy can be transferred to a direction perpendicular to the incident polarization direction, so that polarization conversion of incident electromagnetic waves is realized. At the moment, a local electric field formed at the frequency is distinctively greater than that formed due to direction excitation and polarization irrelevance detection at the target frequency is realized at the same time of realizing super enhanced collection.
Description
Technical field
The invention belongs to infrared detection technique field, be specifically related to a kind of infrared excess based on electromagnetic induced transparency and strengthen collection antenna.
Background technology
Recent decades, in the traction of Military Application and under promoting, infrared electro technology is rapidly developed, and this technology is just towards high-performance infrared acquisition future development at present, and designing various different antennae structure is improve the effective ways of performances of IR.But, when developing high-performance infrared photon antenna, antenna electrode spacing increases further due to the increase of operation wavelength, under the condition that carrier mobility is constant, the increase of electrode spacing will cause the reduction of the prolongation of light-sensitive material photo-generated carrier transit time, photoconductive gain and responsiveness, thus causes the degeneration in photoconductive detector performance.
Optical antenna based on surface plasma resonance can break through diffraction limit, realize the characteristic of small size cell response large area irradiation, have the Joule heat utilizing metal surface plasma body resonance to produce in current published data to realize infrared Doppler signal detection (CN20140455227.5).Photoconductive detector utilizes the collecting action of surface plasma body antenna usually, and incident radiation field is gathered in antenna ends, and the slit place of adjacent antenna produces the local electric field (Nano Lett.14,3749-3754,2014) obviously strengthened.Metal can have a strong impact on the collection efficiency of antenna in the ohmic loss of infrared band, this kind of structural antenna only can respond the infrared radiation of particular polarization simultaneously, the infrared radiation of other polarization states then can not effectively be collected, and these are all promote infrared antenna performance to leave space.
Summary of the invention
For the defect of prior art, the object of the present invention is to provide a kind of infrared excess based on electromagnetic induced transparency to strengthen and collect antenna, be intended to solve because photoelectric detector electrode spacing increases the technical problem of the photoelectric detector performance degeneration caused in prior art, and polarization irrelevant detecting strategy is provided.
The invention provides a kind of infrared excess based on electromagnetic induced transparency and strengthen collection antenna, comprise the antenna element of multiple cyclic array arrangement, described antenna element comprises the first resonant element and the second resonant element; The resonance frequency of described first resonant element is identical or close with the resonance frequency of described second resonant element; The electromagnetic induced transparency phenomenon at infrared band is achieved by the coupling between described first resonant element and described second resonant element, achieve super enhancing of polarization to detect at target frequency place, and the scheme that inventing provides can realize strengthening at arbitrary polarized direction and absorb, i.e. polarization irrelevant detection, improves the collection efficiency to target frequency infrared radiation.
Further, described second resonant element comprises the first Metallic rod and the second Metallic rod, and described first Metallic rod and described second Metallic rod are parallel to each other and place along x-axis; Described first resonant element comprises the 3rd Metallic rod, described 3rd Metallic rod along y-axis place and between described first Metallic rod and described second Metallic rod; Gap is left respectively and between described first Metallic rod and described second Metallic rod in the two ends of described 3rd Metallic rod; Coupling efficiency between described first resonant element and described second resonant element reduces along with the increase in this gap; Described x-axis is horizontal direction, and described y-axis is vertical direction.
Further, described first Metallic rod and described second Metallic rod measure-alike; The length range of described first resonant element and the second resonant element is close, is 0.5 micron ~ 5.0 microns, and width is 0.1 micron ~ 1.0 microns, and the cycle is 0.6 micron ~ 5.5 microns; Wherein the cycle of resonant element refers to the spacing of adjacent resonant element, and x-axis may be different from the cycle in y-axis direction.
Further, described first Metallic rod, described second Metallic rod are identical with the material of described 3rd Metallic rod; The material of Metallic rod is that gold, silver, copper or aluminium etc. are at the infrared metal material with high conductivity; Plate other metal materials of one deck between metal material and substrate as excessive adhesion layer, material can select the metal material such as titanium, nickel, and thickness is 20 nanometer ~ 30 nanometers; The antenna gross thickness of two kinds of metal material compositions is 50 nanometer ~ 200 nanometers.
Further, described second resonant element comprises the first Metallic rod and the second Metallic rod, and described first Metallic rod and described second Metallic rod are parallel to each other and place along x-axis; Described first resonant element comprises the 3rd Metallic rod and the 4th Metallic rod, described 3rd Metallic rod along y-axis place and between described first Metallic rod and described second Metallic rod; Gap is left respectively and between described first Metallic rod and described second Metallic rod in the two ends of described 3rd Metallic rod; Described 4th Metallic rod is placed along y-axis, and described 4th Metallic rod and described 3rd Metallic rod are about described second Metallic rod Central Symmetry; Gap is left between one end of described 4th Metallic rod and described second Metallic rod; Coupling efficiency between described first resonant element and described second resonant element reduces along with the increase in this gap; Described x-axis is horizontal direction, and described y-axis is vertical direction.
Further, described first Metallic rod and described second Metallic rod is measure-alike; Described 3rd Metallic rod and described 4th Metallic rod measure-alike; The length of described first resonant element and the second resonant element is 0.5 micron ~ 5.0 microns, and width is 0.1 micron ~ 1.0 microns, and the cycle is 0.6 micron ~ 5.5 microns.
Further, described first Metallic rod, described second Metallic rod, described 3rd Metallic rod are identical with the material of described 4th Metallic rod; The material of described Metallic rod can be, but not limited to be the material of the high conductivity such as gold, silver, copper or aluminium.
Further, plate other metal materials of one deck between metal material and substrate as excessive adhesion layer, material can select the metal material such as titanium, nickel, and thickness is 20 nanometer ~ 30 nanometers; The antenna gross thickness of two kinds of metal material compositions is 50 nanometer ~ 200 nanometers.
Further, when polarization direction is incident along the infrared radiation electric field of y-axis, described first resonant element is directly excited by incident electric fields, and its induction field produced excites described second resonant element, thus produces electromagnetic induced transparency phenomenon; At electromagnetic induced transparency window place, the energy trasfer that incident infrared radiation electric field is coupled with described first resonant element on described second resonant element, and produces local super enhancing electric field at the two ends of described second resonant element; When polarization direction is incident along the infrared radiation electric field of x-axis, described first resonant element can not be excited, and described second resonant element is directly excited, and produces local at its two ends and strengthen electric field; Under two kinds of polarization states, described second resonant element two ends excite local electric field strong, radiated electric field polarization direction is better than radiated electric field polarization direction along the electric field strength excited during x-axis along the electric field strength excited during y-axis, achieves super enhancing absorption function and the polarization irrelevant detecting function of infrared antenna during Polarization Detection.
The above technical scheme conceived by the present invention compared with prior art, can obtain following beneficial effect:
(1) utilize electromagenetic wave radiation and metal (local) antenna surface plasmon coupling to obtain the local near field extremely strengthened, realize the emittance of the large irradiated area of small size photosensitive unit response, increase photoconductive gain, improve responsiveness.
(2) electromagnetic induced transparency infrared excess provided by the invention strengthens the polarised light redistributed power that collection antenna can make incidence, transfer the energy to the direction vertical with incident polarization direction, realize achieving polarization conversion to incident electromagnetic wave, and obviously large than the local electric field directly excited at the local electric field of this frequency, achieve super enhancing and collect.
(3) electromagnetic induced transparency infrared excess enhancing provided by the invention is collected antenna structure and all can produce resonance in orthogonal both direction, change the size of the first and second resonance structures, the resonance frequency of both direction can be adjusted to identical or very close frequency, realize the polarization irrelevant detection of characteristic frequency infrared waves.
(4) metal electrode that antenna and detector are collected in the enhancing of the infrared excess based on electromagnetic induced transparency provided by the invention adopts same material and manufacture craft, this greatly simplifies the processing technology of detector antenna part.
Accompanying drawing explanation
The infrared excess based on electromagnetic induced transparency that Fig. 1 embodiment of the present invention provides strengthens the longitudinal profile schematic diagram collecting antenna structure;
The infrared excess based on electromagnetic induced transparency that Fig. 2 embodiment of the present invention provides strengthens the schematic top plan view of collecting antenna structure;
The infrared excess based on electromagnetic induced transparency that Fig. 3 embodiments of the invention 1 provide strengthens collects antenna structure view;
The infrared excess based on electromagnetic induced transparency that Fig. 4 embodiments of the invention 2 provide strengthens collects antenna structure view.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The infrared excess based on electromagnetic induced transparency that the present invention proposes strengthens to be collected in antenna, optical antenna size is generally 1/10 to 1/5 of design wavelength, utilize this optical antenna, metal surface plasma body resonance effect can have been excited, break through optical diffraction limit, effectively can eliminate the degeneration increased due to photon detector electrode spacing in the photoconductive detector performance such as reduction of the prolongation of the photoconductive detector light-sensitive material photo-generated carrier transit time caused, photoconductive gain and responsiveness.Electromagnetic induced transparency is a kind of quantum effect, adopt classical system can this phenomenon of simulated implementation, spatially mainly adopt the resonant element that two resonance frequencys are close at present, electromagnetic induced transparency is realized by the mutual coupling of two resonant elements, a transmission peaks is formed between two resonance, be referred to as electromagnetic induced transparency window, realize at electromagnetic induced transparency window place absorbing the super enhancing of incident electromagnetic wave.This antenna is primarily of two parts resonant element composition, and the first resonant element can directly be excited by incident electric fields, produces bright pattern, is referred to as direct excitation portion; Second resonant element can be excited by bright pattern induction, produces dark pattern, is referred to as indirect excitation portion.
The present invention propose electromagnetic induced transparency antenna two parts resonant element structure can but be not limited to be Metallic rod, " work " font Metallic rod (being referred to as Metallic rod below).Metal structure can be equivalent to LC loop, and wherein Metallic rod is equivalent to inductance L, and between Metallic rod, slit is equivalent to inductance C, by the structural parameters of this change metal sense, can adjust the resonance frequency of metal sense
at infrared band, the length range of Metallic rod 0.5 micron ~ 5.0 microns, wide 0.1 micron ~ 1.0 microns, the cycle 0.6 micron ~ 5.5 microns, the optional gold, silver of material of Metallic rod, copper or aluminium etc. at the infrared metal material with high conductance, thickness 50 nanometer ~ 200 nanometer.In antenna element, the second resonant element is the Metallic rod of parallel placement, and the first resonant element direction is vertical with the second resonant element direction, is placed between the second resonant element parallel metal bar; First resonant element is not overlapping with the second resonant element, and the coupling efficiency of two resonant elements increases along with the distance between them and reduces; Calculated by numerical simulation, by the design of the resonance frequency of two resonant elements in identical or close frequencies, utilize the coupling of two resonant elements, realize the electromagnetic induced transparency phenomenon of infrared band; At electromagnetic induced transparency window place, be coupled to the incident electric fields energy trasfer of direct excitation portion in indirect excitation portion, make redistributed power, the second resonant element two ends are all concentrated on by the energy that the first resonant element is caught, in slit between Metallic rod array, achieve the conversion to incident electric fields polarization; The more important thing is, the local electric field intensity directly exciting infrared antenna to produce is better than in the local electric field intensity of electromagnetic induced transparency window, make the capacity gauge of electromagnetic induced transparency infrared antenna to infrared radiation be better than conventional infrared antenna, characteristic is collected in the super enhancing achieving infrared antenna.When incident electric fields polarization direction can the second resonant element of directily excited antenna time, electromagnetic induced transparency phenomenon can not be produced, now the second resonant element of antenna can be used as conventional infrared antenna array, if directly excited the resonance frequency of generation identical or very close to only having the second resonant element the Frequency Design of the electromagnetic induced transparency window produced by two resonant element couplings, then can realize polarization irrelevant detection at the target frequency place preset, improve the collection efficiency to target frequency infrared radiation; Wherein target frequency is the frequency that designer wants, and target frequency can be determined according to the position of the resonance peak of two resonant elements.
According to another aspect of the present invention, provide a kind of infrared excess based on electromagnetic induced transparency and strengthen the preparation method collecting antenna, comprise the steps:
(1) on the substrate being attached with light-sensitive material, photoresist is born in spin coating;
(2) utilize electron beam exposure apparatus to expose described negative photoresist, and the infrared excess produced based on electromagnetic induced transparency strengthen the sample collecting aerial array and metal electrode figure;
(3) sample exposed is developed;
(4) utilize electron-beam evaporation to strengthen based on the infrared excess of electromagnetic induced transparency and collect aerial array and metal electrode material, material is optional but be not limited to nickel/titanium (adhesion layer) and gold/silver/copper/aluminium;
(5) infrared excess obtained after stripping photoresist based on electromagnetic induced transparency strengthens collection aerial array and metal electrode.
The infrared excess based on electromagnetic induced transparency provided in order to the further description embodiment of the present invention strengthens collection antenna, sets forth the specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1, metal electrode 2 and the infrared excess based on electromagnetic induced transparency strengthen and collect antenna 3 and adopt identical processing technology to be produced on to have on light-sensitive material substrate 1 simultaneously.Incident infrared electromagnetic radiation 4 is incident perpendicular to detector front.
As shown in Figure 2, the both positive and negative polarity of metal electrode 2 is placed in the two ends with light-sensitive material substrate layer 1 respectively, and infrared antenna layer 3 is placed between metal electrode 2 both positive and negative polarity.
Embodiment 1:
As shown in Figure 3, the infrared excess based on electromagnetic induced transparency strengthens collects the Metallic rod array that antenna 3 is periodic arrangement, and wherein horizontal direction is x-axis direction, and vertical direction is y-axis direction.In array, each antenna element comprises Two-component, and the first resonant element 31 is placed along y-axis, and the second resonant element 32 is the Metallic rod of two parallel placements, and the first resonant element 31 is placed between the second resonant element 32 two Metallic rod, and direction is vertical with it.Antenna size is generally 1/10 to 1/5 of design wavelength, therefore at infrared band, and the length L of the first resonant element Metallic rod
1with the second resonant element Metallic rod length L
2scope 0.5 micron ~ 5.0 microns, wide w
1and w
2scope be 0.1 micron ~ 1.0 microns, the P scope in cycle is 0.6 micron ~ 5.5 microns.The material of Metallic rod can be gold, and plate one deck titanium as adhesion layer between gold and substrate, thickness is 20 nanometer ~ 30 nanometers; The gross thickness of metal antenna is 50 nanometer ~ 200 nanometers.
Incident infrared radiation electric field polarization direction along the y-axis direction time, the first resonant element 31 is directly excited by incident electric fields, has excited bright pattern, and its induction field produced excites the second resonant element 32, and dark pattern is excited, generation electromagnetic induced transparency phenomenon.At electromagnetic induced transparency window place, the energy trasfer that incident electric fields is coupled with the first resonant element 31 is on the second resonant element 32, and energy there occurs redistribution, produces local super enhancing electric field at the two ends of the second resonant element 32; When incident IR radiation electric field polarization direction along the x-axis direction time, the first resonant element 31 can not be excited, and the second resonant element 32 is directly excited, and its two ends produce local strengthen electric field.Excite local electric field intensity at the second resonant element two ends under contrasting two kinds of polarization states, radiated electric field polarization direction is better than radiated electric field polarization direction along intensity during x-axis along intensity during y-axis, achieves the super enhancing absorption function of infrared antenna during Polarization Detection; Meanwhile, if change the physical dimension of the first resonant element 31 and the second resonant element 32, the resonance frequency that two kinds of incident radiation polarization field excite is adjusted to identical or very close frequency, Polarization Detection or polarization irrelevant detection can be realized.
Embodiment 2:
As Fig. 4, the infrared excess based on electromagnetic induced transparency strengthens collects the Metallic rod array that antenna 3 is periodic arrangement, and wherein horizontal direction is x-axis direction, and vertical direction is y-axis direction.In array, each unit comprises Two-component, first resonant element 31 is placed along y-axis, second resonant element 32 is the Metallic rod of placing along x-axis, first resonant element 31 is placed between two the second resonant elements 32, direction is vertical with it, and adjacent the first resonant element 31 in y direction is relative to the second resonant element Central Symmetry between them.Antenna size is generally 1/10 to 1/5 of design wavelength, at infrared band, and the length L of the first resonant element Metallic rod
1with the second resonant element Metallic rod length L
2scope 0.5 micron ~ 5.0 microns, wide w
1and w
2scope is 0.1 micron ~ 1.0 microns, cycle P scope 0.6 micron ~ 5.5 microns.The material of Metallic rod can be gold, and plate one deck titanium as adhesion layer between gold and substrate, thickness is 20 nanometer ~ 30 nanometers; The gross thickness of metal antenna is 50 nanometer ~ 200 nanometers.
When incidence infrared radiation electric field polarization direction along the y-axis direction time, first sub-resonant element 31 with directly excited by incident electric fields, excited bright pattern, the induction field of their generations excites the second sub-resonant element 32, dark pattern is excited, and produces electromagnetic induced transparency phenomenon.At electromagnetic induced transparency window place, the energy trasfer that incident electric fields is coupled with the first resonant element 31 is on the second resonant element 32, and energy there occurs redistribution, produces local super enhancing electric field at the two ends of the second resonant element 32; When incident IR radiation electric field polarization direction along the x-axis direction time, the first sub-resonant element 31 can not be excited, and the second sub-resonant element 32 is directly excited, and its two ends produce local strengthen electric field.Excite local electric field intensity at the second resonant element two ends under contrasting two kinds of polarization states, radiated electric field polarization direction is better than radiated electric field polarization direction along intensity during x-axis along intensity during y-axis, achieves the enhancing absorption function of infrared antenna during Polarization Detection; Meanwhile, adjust the physical dimension of the first resonant element 31 and the second resonant element 32, the resonance frequency that two kinds of incident radiation polarization field excite is adjusted to identical or very close frequency, Polarization Detection or polarization irrelevant detection can be realized.
Preparation method of the present invention comprises the steps:
(1) on the substrate being attached with light-sensitive material, photoresist is born in spin coating;
(2) electron beam exposure apparatus is utilized to expose negative photoresist;
(3) sample exposed is developed;
(4) utilize electron-beam evaporation to strengthen based on the infrared excess of electromagnetic induced transparency and collect aerial array and metal electrode material, metal antenna and electrode material optional but be not limited to gold/silver/copper/aluminium, adhesion layer is optional but be not limited to nickel/titanium;
(5) infrared excess that stripping photoresist is produced based on electromagnetic induced transparency strengthens collection aerial array and metal electrode.
The present invention proposes a kind of infrared excess based on electromagnetic induced transparency and strengthen collection antenna, utilize the local surface plasma resonance of electromagnetic induced transparency infrared antenna, break through diffraction limit, by the opening part of directs electromagnetic radiation builds at Metallic rod two ends, realize the emittance of the large irradiated area of small size photosensitive unit response, increase photoconductive gain, realize and polarization irrelevant detection relevant to infrared wave polarization.
Those skilled in the art will readily understand; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the infrared excess based on electromagnetic induced transparency strengthens a collection antenna, and it is characterized in that, comprise the antenna element of multiple cyclic array arrangement, described antenna element comprises the first resonant element and the second resonant element;
The resonance frequency of described first resonant element is identical or close with the resonance frequency of described second resonant element; The electromagnetic induced transparency phenomenon at infrared band is achieved by the coupling between described first resonant element and described second resonant element, and the super enhancing detection of polarization and polarization irrelevant detection is achieved at target frequency place, improve the collection efficiency to target frequency infrared radiation.
2. infrared excess as claimed in claim 1 strengthens collection antenna, and it is characterized in that, described second resonant element comprises the first Metallic rod and the second Metallic rod, and described first Metallic rod and described second Metallic rod are parallel to each other and place along x-axis;
Described first resonant element comprises the 3rd Metallic rod, described 3rd Metallic rod along y-axis place and between described first Metallic rod and described second Metallic rod; Gap is left respectively and between described first Metallic rod and described second Metallic rod in the two ends of described 3rd Metallic rod;
Coupling efficiency between described first resonant element and described second resonant element reduces along with the increase in this gap;
Described x-axis is horizontal direction, and described y-axis is vertical direction.
3. infrared excess as claimed in claim 2 strengthens and collects antenna, it is characterized in that, described first Metallic rod and described second Metallic rod measure-alike; The length range of described first resonant element and the second resonant element is close, is 0.5 micron ~ 5.0 microns, and width is 0.1 micron ~ 1.0 microns, and the cycle is 0.6 micron ~ 5.5 microns.
4. infrared excess as claimed in claim 2 strengthens collection antenna, and it is characterized in that, described first Metallic rod, described second Metallic rod are identical with the material of described 3rd Metallic rod; The material of Metallic rod can be, but not limited to be the material of the high conductivity such as gold, silver, copper or aluminium.
5. infrared excess as claimed in claim 1 strengthens collection antenna, and it is characterized in that, described second resonant element comprises the first Metallic rod and the second Metallic rod, and described first Metallic rod and described second Metallic rod are parallel to each other and place along x-axis;
Described first resonant element comprises the 3rd Metallic rod and the 4th Metallic rod, described 3rd Metallic rod along y-axis place and between described first Metallic rod and described second Metallic rod; Gap is left respectively and between described first Metallic rod and described second Metallic rod in the two ends of described 3rd Metallic rod; Described 4th Metallic rod is placed along y-axis, and described 4th Metallic rod and described 3rd Metallic rod are about described second Metallic rod Central Symmetry; Gap is left between one end of described 4th Metallic rod and described second Metallic rod;
Coupling efficiency between described first resonant element and described second resonant element reduces along with the increase in this gap;
Described x-axis is horizontal direction, and described y-axis is vertical direction.
6. infrared excess as claimed in claim 5 strengthens and collects antenna, it is characterized in that, described first Metallic rod and described second Metallic rod measure-alike; Described 3rd Metallic rod and described 4th Metallic rod measure-alike; The length of described first resonant element and the second resonant element is 0.5 micron ~ 5.0 microns, and width is 0.1 micron ~ 1.0 microns, and the cycle is 0.6 micron ~ 5.5 microns.
7. infrared excess as claimed in claim 5 strengthens and collects antenna, it is characterized in that, described first Metallic rod, described second Metallic rod, described 3rd Metallic rod are identical with the material of described 4th Metallic rod; The material of Metallic rod can be, but not limited to be the material of the high conductivity such as gold, silver, copper or aluminium.
8. the infrared excess as described in any one of claim 1-7 strengthens collects antenna, it is characterized in that, when polarization direction is incident along the infrared radiation electric field of y-axis, described first resonant element is directly excited by incident electric fields, its induction field produced excites described second resonant element, thus produces electromagnetic induced transparency phenomenon; At electromagnetic induced transparency window place, the energy trasfer that incident infrared radiation electric field is coupled with described first resonant element on described second resonant element, and produces local super enhancing electric field at the two ends of described second resonant element;
When polarization direction is incident along the infrared radiation electric field of x-axis, described first resonant element can not be excited, and described second resonant element is directly excited, and produces local at its two ends and strengthen electric field;
Under two kinds of polarization states, described second resonant element two ends excite local electric field strong, radiated electric field polarization direction is better than radiated electric field polarization direction along the electric field strength excited during x-axis along the electric field strength excited during y-axis, achieves super enhancing absorption function and the polarization irrelevant detecting function of infrared antenna during Polarization Detection.
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| CN105182462A (en) * | 2015-10-23 | 2015-12-23 | 电子科技大学 | Intermediate infrared polarization converter based on double-pole antenna structure |
| CN110289502A (en) * | 2019-07-30 | 2019-09-27 | 广东工业大学 | A kind of array antenna |
| CN116666949A (en) * | 2023-06-07 | 2023-08-29 | 广东工业大学 | Resonant body coupling enhanced photoconductive antenna |
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| TW201027161A (en) * | 2009-01-07 | 2010-07-16 | Nat Univ Tsing Hua | Structure for implementing electromagnetically induced transparency phenomenon and method for adjusting its response frequency and transmission rate |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105182462A (en) * | 2015-10-23 | 2015-12-23 | 电子科技大学 | Intermediate infrared polarization converter based on double-pole antenna structure |
| CN105182462B (en) * | 2015-10-23 | 2017-10-24 | 电子科技大学 | A kind of middle infrared polarization converter based on double-rod antenna structure |
| CN110289502A (en) * | 2019-07-30 | 2019-09-27 | 广东工业大学 | A kind of array antenna |
| CN116666949A (en) * | 2023-06-07 | 2023-08-29 | 广东工业大学 | Resonant body coupling enhanced photoconductive antenna |
| CN116666949B (en) * | 2023-06-07 | 2024-05-28 | 广东工业大学 | Resonant body coupling enhanced photoconductive antenna |
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| CN104993250B (en) | 2017-12-12 |
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