CN110058431A - The super surface magneto-optic Ke Er polarization converter of Terahertz - Google Patents
The super surface magneto-optic Ke Er polarization converter of Terahertz Download PDFInfo
- Publication number
- CN110058431A CN110058431A CN201910332403.9A CN201910332403A CN110058431A CN 110058431 A CN110058431 A CN 110058431A CN 201910332403 A CN201910332403 A CN 201910332403A CN 110058431 A CN110058431 A CN 110058431A
- Authority
- CN
- China
- Prior art keywords
- super surface
- polarization
- optic
- terahertz
- magneto
- 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.)
- Pending
Links
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
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/0009—Materials therefor
- G02F1/0036—Magneto-optical materials
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/0136—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour for the control of polarisation, e.g. state of polarisation [SOP] control, polarisation scrambling, TE-TM mode conversion or separation
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/09—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on magneto-optical elements, e.g. exhibiting Faraday effect
- G02F1/093—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on magneto-optical elements, e.g. exhibiting Faraday effect used as non-reciprocal devices, e.g. optical isolators, circulators
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a kind of super surface magneto-optic Ke Er polarization converters of Terahertz.By attaching metallic reflection backboard and the super surface texture of square frame-shaped metal in the ferritic two sides YIG, mechanics amber micro-cavity structure, incident THz wave is set to resonate in intracavitary generation, substantially enhance the Kerr magnetooptical effect of YIG ferrite (1), compared with the structure on the super surface of no metal, the optically-active angle and polarization conversion rate of THz wave are increased.The device rotates by a certain angle the polarization state of former line polarisation, when the intensity of magnetization reaches 4000Gs, the function of realizing orhtogonal linear polarizaiton conversion shows the frequency spectrum of apparent high q-factor, high transmittance, highest transmitance and polarization conversion rate > 80%, Q value > 70.
Description
Technical field
The invention belongs to Terahertz science and technology fields, and in particular to a kind of high q-factor, high transmittance, high-polarization it is anti-
Penetrate formula Terahertz linear polarization switching device.
Background technique
Terahertz (THz) wave typically refers to frequency range and is in 0.1-10THz (1THz=1012Hz) the electromagnetism in range
A series of wave, since it is anti-in wireless communication, radar, non-destructive testing, medical imaging and safety check with excellent special natures
Probably equal fields have very extensive application prospect.THz function element, as modulator, filter, absorber, polarizer and every
It is the essential component units of THz application system from device etc..Magneto-optic memory technique is because of unique Faraday effect, magneto-optic gram
Your effect etc. has obtained many uses in terms of the exploitation of THz function element, and common magneto-optic memory technique includes InSb, YIG iron oxygen
Body, HgTe etc..The characteristics of anisotropic dielectric function or magnetic conductivity are as nonreciprocal medium is formed under magnetic field using it, is had
Using InSb constitute a kind of Terahertz isolator realize nonreciprocal transmission function [Optics Letters, 2018,43 (4):
687], the Terahertz circulator for also occurring being formed photonic crystal production by magneto-optic memory technique realizes directional transmissions [Optics
Communications, 2012,285 (18): 3763], magnetic-optic devices can carry out light by the size of bias magnetic field greatly
Modulation, although having achieved some progress at this stage, function admirable and the THz magnetic-optic devices that the processing is simple is still
It is deficient.
THz polarization converter is the element that the polarization state of incident light can be made to become another polarization state after through device,
Spectral detection with sensing, polarization communicate and polarization imaging in play an important role.Some magneto-optic memory techniques are disclosed in recent years
The technical solution and research achievement of THz polarization converter device, such as a kind of terahertz polarization based on electron adulterated N-shaped InSb
Device, realized at a temperature of the external magnetic field of 0-3T, 184K incident linear polarization to different polarization states polarization conversion function
[Opt.Express, 2012,20 (17): 19484]；A kind of for another example InSb polarization converter based on orthogonal metal grating,
The magnetic field of 150mT, realize at a temperature of 100K polarization conversion and selection function [Photonics Research, 2019,7
(3): 325].The magneto-optic effect of this kind of devices use electricity chiral medium realizes the effect of polarization rotation, and passes through transmission mostly
Device generates optically-active effect, there is relatively high requirement to temperature and magnetic field, more harsh to operating environment requirements, is difficult reality
Using.
In conclusion the development of Terahertz Technology has urgent need to the development of high-performance terahertz polarization switching device
It asks, but still at an early stage to the research of Terahertz magneto-optic polarization converter device both at home and abroad, existing such devices are in undershoot
Enter loss, room temperature, low-intensity external magnetic field operating condition etc. to be not possible to reach the requirement of real system work, high-performance Terahertz is anti-
Penetrate formula magneto-optical kerr polarizer be even more it is fresh studies have reported that, so develop weak magnetic condition, room temperature work high-polarization, low damage
It consumes, the reflective Terahertz magneto-optical kerr polarizer of easy processing has very important application value.
Summary of the invention
The purpose of the present invention is to provide one kind to realize the conversion of high-polarization linear polarization with high transmittance, high q-factor
The super surface magneto-optic Ke Er polarization converter of the Terahertz of function, and structure is simple, easy to process, to solve the magnetic in background technique
Field is big, low-temperature working, loss is big, makes the key technical problems such as difficulty.
To achieve the above object, device material of the invention and structure are as follows: the super surface magneto-optic Ke Er polarization conversion of Terahertz
Device is total to three-decker structure by yttrium iron garnet (YIG) ferrite (1), metallic reflection backboard (2) and the super surface of square frame-shaped metal (3)
At wherein YIG ferrite is with a thickness of 100 μm of ferrite base, ferromagnetic resonance line width < 200Oe, and saturation magnetization reaches
To 4000Gs；Metallic reflection backboard (2) is the golden film with a thickness of 500nm, is attached at the rear surface of YIG ferrite (1)；Square frame-shaped
The super surface of metal (3) is the metal box that formation is etched in the golden film with a thickness of 500nm, invests the preceding table of YIG ferrite (1)
Face, the external width of square boxes are 20 μm, and inner width is 10 μm, are 25 μm along the period of X-axis and Y direction.
Basic principle of the invention is: YIG ferrite (1) is ferrimagnetism gyromagnetic material, under the conditions of longitudinal magnetization, rotation
The magnetic conductivity of magnetic ferrites becomes anisotropic second-order tensor, becomes nonreciprocal medium.When the incident material of a branch of linearly polarized light
After expecting surface, reflected light remains as linearly polarized light, but polarization direction will turn over certain angle relative to incident light, i.e. generation magnetic
Optical kerr effect.In the present invention, after THz wave is with linearly polarized light incidence square frame-shaped metal super surface (3), square frame-shaped is super
Surface and bottom-side metal backboard mechanics amber cavity structure generate resonance, and light constantly reflects between two metal layers, substantially enhances
Former line polarisation polarization direction is turned over certain angle by the Kerr magnetooptical effect of Ferrite Material, and maximum rotation angle can reach 90 °,
It is converted to electric field oscillation direction to reflect along the linearly polarized light of orthogonal direction, realizes the function of efficient linear polarization conversion.
The working method of the super surface magneto-optic Ke Er polarization converter of Terahertz is: the device is placed in Terahertz light path,
The weak bias magnetic field (4) along Z-direction need to be applied, device without particular/special requirement, works to environment temperature under room temperature.The device
It is required that incidence wave is linearly polarized wave, by the ferritic intensity of magnetization of change, the optically-active angle of polarization light output can be regulated and controled.
When saturation magnetization reaches 4000Gs, which can be rotated by 90 ° the polarization state highest of former line polarisation, switch to electric field oscillation
Direction is reflected along the linearly polarized light of another orthogonal direction, realizes the function of orhtogonal linear polarizaiton conversion.Incidence wave direction and device
θ, the working frequency of the device can be tuned by incidence angle θ at an angle in plane normal direction, when angle is at 0~75 °
When range, operating frequency range is 890GHz~925GHz.
Advantages and advantages of the invention are:
1. the function of reflection type polarization conversion is realized using gyromagnetic ferrite material, compared to spin semiconductor magneto-optic material
Material, the magneto-optic effect of gyromagnetic ferrite do not have apparent dependence to temperature, device are worked under normal temperature conditions.Together
When, it only needs to work by remanent magnetism after magnetization in the stronger situation of magnetic material coercivity, it is smaller to bias magnetic field dependence, partially
It sets magnetic field and only needs 1000Gs.
2. being plated with the structure on super surface using bottom metal plate and on the ferrite, generate incident THz wave altogether
Vibration enhancement effect, substantially reinforces the optically-active effect of Ferrite Material Kerr effect itself, improves the super surface magneto-optic of the Terahertz
The transmitance of Ke Er polarization converter can be adjusted with the working frequency of linear polarization conversion ratio and the device by incidence angle θ
It is humorous.Compared to the structure on not super surface, device angle of rotation is increased to 90 ° from 17 °, and cross-polarization degree is increased to close from 9%
100%.
3. device book size can flexible design, not only can integrate in small solid-state electronic device, but also can be designed to
Large format device is placed in free space Terahertz system and uses.The reflective linear polarization of its high-polarization converts function simultaneously
It can be communicated in Terahertz, tera-hertz spectra detects and there is very big application value in the fields such as sensing, polarization imaging.
Detailed description of the invention
Fig. 1 is the three dimensional structure diagram of the super surface magneto-optic Ke Er polarization converter of Terahertz；
Fig. 2 is the working method schematic diagram of the device；
Fig. 3 is that 45 ° of incident x-LP waves cross the device on X, Y direction when whether there is or not the super surface of square frame-shaped metal (3)
Reflect spectral line；
Fig. 4 is that 45 ° of incident x-LP waves pass through reflection spectral line of the device on X, Y direction；
Fig. 5 is to pass through reflection spectral line of the device on X, Y direction in the oblique incident x-LP wave of incidence angles degree；
Fig. 6 is the cross-polarization degree spectral line that the different oblique incident x-LP waves of saturation magnetization pass through the device；
Fig. 7 (a) is at working frequency, and whether there is or not x-LP waves when the super surface of square frame-shaped metal (3) to pass through the orthogonal of the device
Degree of polarization with saturation magnetization change curve.
Fig. 7 (b) is at working frequency, and whether there is or not the optically-actives that x-LP wave when the super surface of square frame-shaped metal (3) passes through the device
Angle with saturation magnetization change curve.
In figure: 1, YIG ferrite；2, metallic reflection backboard；3, the super surface of square frame-shaped metal；4, applied bias magnetic field；5,
Incident linear polarization THz wave；6, reflected terahertz hereby wave
Specific embodiment
The working principle of the invention and method are illustrated by following Examples below:
The structural schematic diagram of device is the YIG with a thickness of 100 μm as shown in Figure 1, (1) is the ferrite base in Fig. 1
Ferrite, ferrite dielectric constant is 12.9 in this example, and ferromagnetic resonance line width is 190Oe.(2) in Fig. 1 are metallic reflection
Backboard, (3) are the super surface of square frame-shaped metal.Metallic reflection backboard (2) is the golden film with a thickness of 500nm, the super table of square frame-shaped metal
Face (3) is the metal box that formation is etched in the golden film with a thickness of 500nm；The external width of square boxes is 20 μm, interior
Portion's width is 10 μm；It is 25 μm along the period of X-axis and Y direction.
The basic functional principle of the device is as follows: as shown in Fig. 2, in the bias magnetic field (4) along +Z direction, gyromagnet iron
The magnetic permeability μ of oxysome becomes second-order tensor:
Each tensor elements indicate in matrix are as follows:
Wherein ωm=γ μ0M0It is ferromagnetic characteristic angular frequency, M0It is stationary magnetic field B0The generated intensity of magnetization.ωc=
γB0For Rameau precession frequency, as ω → ωcWhen, the when humorous magnetic-field component of very little can generate magnetic resonance.γ is gyromagnetic ratio,
γ=1.759 × 1011(rad/s·T)。
It is at this time to rotate in the reverse direction two kinds of intrinsic waves of circular polarization along Z-direction transmission:
The then synthesis field at Z are as follows:
Synthesizing field is still linear polarization, but polarization direction produces rotation angle:
Therefore, when linearly polarized wave incidence ferrite, reflecting light is the linearly polarized wave that the angle of polarization turns over the angle φ, this phenomenon
Referred to as Kerr magnetooptical effect.General common YIG ferrite single crystal is very weak to the Kerr magnetooptical effect of THz wave, when material and outside
In the case that field condition is constant, when only increasing propagation distance z of the light in ferrite, the angle φ could increase.
Fig. 2 shows the basic wage principle of the device: when electric field is along the linear polarization THz wave and+Z axis of X axis vibration
When the device of θ oblique incidence at an angle of direction, since ferrite magnetic optical kerr effect rotates the polarization state of incident light,
The Fa-Po cavity structure constituted between super surface and bottom plate double layer of metal vibrates light constantly wherein, increase its with it is ferritic
Operating distance is changed into electric field and reflects along the linearly polarized wave of Y axis vibration so that the angle of rotation of reflected light reaches 90 °.Fig. 3 ratio
When compared with surpassing surface whether there is or not metal, the spectral line of x and y-LP component in reflected light, wherein the curve table without the super surface of square frame-shaped metal
The weaker Kerr effect of bright list ferrite itself is not enough to realize strong polarization rotation, angle of rotation very little, therefore the y- converted
LP component not more than 30%.But after the device introduces the super surface of square frame-shaped metal (3), device makes incident THz wave
Resonance enhancement is generated, substantially reinforces the optically-active effect of Ferrite Material Kerr effect, improves the polarization conversion of the device
Rate, and show high Q, frequency peak such as Fig. 4 of high transmittance shows, highest transmitance and polarization conversion rate > 80%, Q value > 70.
The working method of the device is as follows: as shown in Fig. 2, the device is put into Terahertz light path, need to apply edge+Z axis
The weak bias magnetic field (4) in direction, device without particular/special requirement, work to environment temperature and humidity under room temperature.The requirement on devices
Incidence wave is linearly polarized wave, and incident light polarization direction is X-direction in this example.Incidence wave direction is in device plane normal direction
The working frequency of certain angle θ, the device can be tuned by incidence angle θ.Incident THz wave when to device work
Angle carry out parameter scanning, frequency spectrum output as shown in figure 5, wherein θ be incident light and Z axis angle.It can be seen from the figure that
The increase of incident angle will lead to working frequency to high-frequency mobile, but the influence not big to the performance of device polarization conversion, this
Show that the device can adjust the position of working frequency by changing incident angle size in very big angular range, at 0 °
~75 ° of angular range can be tuned device in the operating frequency range of 890GHz~925GHz.
Cross-polarization degree is defined as to the polarization direction component of expectation conversion and the ratio of reflected light gross energy in this example:
If reflected light is all x-LP wave, degree of polarization 0 is all y-LP wave, and degree of polarization is exactly 100%.Simultaneously to not
Degree of polarization conversion with device under saturation magnetization is calculated, as a result as shown in fig. 6, when saturation magnetization is 0, partially
Vibration degree is that there is no any variations for the 0 i.e. polarization state of incident light, as the rising degree of polarization of saturation magnetization is close to linearly
The growth of formula, when saturation magnetization is 4000Gs, degree of polarization reaches 1, also indicates that former incident x-LP light completes partially
The pure linearly polarized light that vibration rotation outgoing is y-LP.Under different saturation magnetizations, whether there is or not metal surpass the device degree of polarization on surface with
Shown in optically-active angle such as Fig. 7 (a) and (b), do not have at 4000Gs super surface texture can only obtain 9% degree of polarization and 17 °
Optically-active angle, and the device for having super surface to constitute is able to achieve 100% perfect degree of polarization and 90 ° of angle of rotation；Therefore metal is super
The increase meeting on surface enables the device under the identical intensity of magnetization to obtain higher degree of polarization and optically-active angle, super surface and bottom
The Fa-Po cavity structure constituted between plate double layer of metal vibrates light constantly wherein, increase its with it is ferritic effect away from
From, while higher saturation magnetization makes Ke Er optically-active effect more significant, reduces the absorption to THz wave, more
It is that orthogonal linearly polarized light is emitted that incident light, which carries out polarization translating rotation, increases the polarization conversion rate of device.
Compared to previous Terahertz magneto-optic polarization converter device, the advantages of device, is using YIG Ferrite Material
Realize reflective polarization rotation, and the Fa Poshi absorber for using bottom metal plate and being plated with super surface on the ferrite
Structure makes incident THz wave generate resonance enhancement, substantially reinforces the optically-active effect of Ferrite Material Kerr magnetooptical effect
Fruit improves the transmitance and linear polarization conversion ratio of the super surface magneto-optic Ke Er polarization converter of the Terahertz.Show high Q,
The frequency peak of high transmittance, highest transmitance and polarization conversion rate > 80%, Q value > 70.Device is not special to operating temperature
It is required that can at room temperature, weak bias magnetic field or material work under conditions of having remanent magnetism.The working frequency of device can
It is tuned by incidence angle, when angle is in 0~75 ° of range, working frequency modulation range is 890GHz~925GHz.
Device book size can flexible design, not only can integrate in small-sized Terahertz solid electronic device, but also can be designed to millimeter
The large format device of dimensions above is placed in free space Terahertz system and uses.The device high q-factor, high transmittance, height are partially
The function of vibration degree linear polarization conversion has very in Terahertz communication, tera-hertz spectra detection with fields such as sensing, polarization imagings
Big application value.
Claims (6)
1. a kind of super surface magneto-optic Ke Er polarization converter of Terahertz, it is characterised in that including YIG ferrite (1), metallic reflection
Backboard (2), the super surface of square frame-shaped metal (3) and applied bias magnetic field (4), wherein metallic reflection backboard (2) is attached at YIG iron oxygen
The entire rear surface of body (1)；The super surface of square frame-shaped metal (3) is periodically attached at the front surface of YIG ferrite (1).
2. the super surface magneto-optic Ke Er polarization converter of Terahertz according to claim 1, it is characterized in that: YIG ferrite (1)
It is ferrimagnetism gyromagnetic material, ferromagnetic resonance line width < 200Oe, saturation magnetization reaches 4000Gs, with a thickness of 100 μm.
3. the super surface magneto-optic Ke Er polarization converter of Terahertz according to claim 1, it is characterized in that: metallic reflection backboard
It (2) is the golden film with a thickness of 500nm；The super surface of square frame-shaped metal (3) is constituted by etching in the golden film of thickness 500nm；It is square
The external width of shape box is 20 μm, and inner width is 10 μm；The super surface of metal is 25 μm along the period of X-axis and Y direction.
4. the super surface magneto-optic Ke Er polarization converter of Terahertz according to claim 1, it is characterized in that: bias magnetic field (4)
It is flat perpendicular to the super surface texture of square frame-shaped metal along Z-direction for the steady magnetic field that additional permanent magnet or electromagnetic coil provide
Face, magnetic induction intensity > 1000Gs.
5. the super surface magneto-optic Ke Er polarization converter of Terahertz according to claim 1, it is characterized in that: can be in room temperature item
It works under part, the super surface of square frame-shaped metal (3) and bottom-side metal backboard (2) mechanics amber micro-cavity structure, incident THz wave
It resonates in intracavitary generation, substantially enhances the Kerr magnetooptical effect of YIG ferrite (1), the structure phase with the super surface of no metal
Than increasing the optically-active angle and polarization conversion rate of THz wave, showing the frequency spectrum of apparent high q-factor, high transmittance, most
High transmittance and polarization conversion rate > 80%, Q value > 70.
6. the super surface magneto-optic Ke Er polarization converter of Terahertz according to claim 1, it is characterized in that: the requirement on devices enters
Ejected wave is linearly polarized wave, which rotates by a certain angle the polarization state of former line polarisation, real when the intensity of magnetization reaches 4000Gs
The function of existing orhtogonal linear polarizaiton conversion；Incidence wave direction and device plane normal direction θ at an angle, the work frequency of the device
Rate can be tuned by incidence angle θ, when angle is in 0~75 ° of range, operating frequency range be 890GHz~
925GHz。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910332403.9A CN110058431A (en) | 2019-04-24 | 2019-04-24 | The super surface magneto-optic Ke Er polarization converter of Terahertz |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910332403.9A CN110058431A (en) | 2019-04-24 | 2019-04-24 | The super surface magneto-optic Ke Er polarization converter of Terahertz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110058431A true CN110058431A (en) | 2019-07-26 |
Family
ID=67320464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910332403.9A Pending CN110058431A (en) | 2019-04-24 | 2019-04-24 | The super surface magneto-optic Ke Er polarization converter of Terahertz |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110058431A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110515254A (en) * | 2019-09-02 | 2019-11-29 | 南开大学 | A kind of nonreciprocal magneto-optic terahertz wave beam scanner |
| CN111541031A (en) * | 2020-04-16 | 2020-08-14 | 华南理工大学 | Broadband low-profile transmission array antenna and wireless communication equipment |
| CN112882259A (en) * | 2021-01-13 | 2021-06-01 | 天津大学 | Vanadium dioxide-based adjustable reflection-type terahertz polarization converter |
| CN114664552A (en) * | 2022-03-01 | 2022-06-24 | 电子科技大学 | Based on SmCo5Method for obtaining significant terahertz magnetic permeability through permanent magnet film |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750651A (en) * | 2009-11-25 | 2010-06-23 | 南京大学 | Electromagnetic wave transmission device with regulative and controllable magnetic field based on sub-monolayer wavelength metal grating and preparation |
| CN105044812A (en) * | 2015-07-22 | 2015-11-11 | 南开大学 | Double-layer asymmetric subwavelength dielectric grating Terahertz isolator |
| CN108519687A (en) * | 2018-04-12 | 2018-09-11 | 南开大学 | Terahertz magneto-optic polarization converter |
| CN109163739A (en) * | 2018-08-20 | 2019-01-08 | 河南工业大学 | A method of preparing magneto-optic glass base single layer magnetic phasmon Terahertz sense film |
-
2019
- 2019-04-24 CN CN201910332403.9A patent/CN110058431A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101750651A (en) * | 2009-11-25 | 2010-06-23 | 南京大学 | Electromagnetic wave transmission device with regulative and controllable magnetic field based on sub-monolayer wavelength metal grating and preparation |
| CN105044812A (en) * | 2015-07-22 | 2015-11-11 | 南开大学 | Double-layer asymmetric subwavelength dielectric grating Terahertz isolator |
| CN108519687A (en) * | 2018-04-12 | 2018-09-11 | 南开大学 | Terahertz magneto-optic polarization converter |
| CN109163739A (en) * | 2018-08-20 | 2019-01-08 | 河南工业大学 | A method of preparing magneto-optic glass base single layer magnetic phasmon Terahertz sense film |
Non-Patent Citations (1)
| Title |
|---|
| ANTON V. CHESNITSKIY 等: "Transverse Magneto-Optical Kerr Effect in Strongly Coupled Plasmon Gratings", 《PLASMONICS》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110515254A (en) * | 2019-09-02 | 2019-11-29 | 南开大学 | A kind of nonreciprocal magneto-optic terahertz wave beam scanner |
| CN111541031A (en) * | 2020-04-16 | 2020-08-14 | 华南理工大学 | Broadband low-profile transmission array antenna and wireless communication equipment |
| CN111541031B (en) * | 2020-04-16 | 2021-08-10 | 华南理工大学 | Broadband low-profile transmission array antenna and wireless communication equipment |
| CN112882259A (en) * | 2021-01-13 | 2021-06-01 | 天津大学 | Vanadium dioxide-based adjustable reflection-type terahertz polarization converter |
| CN112882259B (en) * | 2021-01-13 | 2022-10-28 | 天津大学 | Vanadium dioxide-based adjustable reflection-type terahertz polarization converter |
| CN114664552A (en) * | 2022-03-01 | 2022-06-24 | 电子科技大学 | Based on SmCo5Method for obtaining significant terahertz magnetic permeability through permanent magnet film |
| CN114664552B (en) * | 2022-03-01 | 2023-05-16 | 电子科技大学 | Based on SmCo 5 Method for obtaining remarkable terahertz magnetic permeability of permanent magnet film |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110058431A (en) | The super surface magneto-optic Ke Er polarization converter of Terahertz | |
| Kodera et al. | Uniform ferrite-loaded open waveguide structure with CRLH response and its application to a novel backfire-to-endfire leaky-wave antenna | |
| CN107340559B (en) | High efficiency and broad band circular polarization switching device and method based on super clever surface | |
| Lindell et al. | Transformation method for problems involving perfect electromagnetic conductor (PEMC) structures | |
| Gao et al. | Ultrawideband and high-efficiency linear polarization converter based on double V-shaped metasurface | |
| US20180131100A1 (en) | Left-handed circular-polarization conversion metamaterial film | |
| Özgür et al. | Microwave ferrites, part 2: passive components and electrical tuning | |
| Lindell et al. | Realization of the PEMC boundary | |
| US20180128953A1 (en) | Right-handed circular-polarization conversion metamaterial film | |
| CN106450794B (en) | The reflective 90 degree of polarizers of the super surface Terahertz of chiral | |
| Mirmoosa et al. | Polarizabilities of nonreciprocal bianisotropic particles | |
| CN105044812B (en) | Double-deck asymmetric sub-wavelength dielectric grating Terahertz isolator | |
| CN104820298B (en) | A kind of TM TE magneto-optic modulators based on BiLuIG films | |
| Dionne et al. | Circular polarization and nonreciprocal propagation in magnetic media | |
| Caloz et al. | Guest editorial special cluster on magnetless nonreciprocity in electromagnetics | |
| CN110098451A (en) | A kind of spin wave phase shifter based on polarization current regulation | |
| CN108519687A (en) | Terahertz magneto-optic polarization converter | |
| Bi | Materials for nonreciprocal photonics | |
| Khramova et al. | Tuning the directionality of spin waves generated by femtosecond laser pulses in a garnet film by optically driven ferromagnetic resonance | |
| Dillon Jr | Magnetic and optical properties of rare earth garnets | |
| Guo et al. | A novel reconfigurable metasurface with coincident and ultra-wideband LTL and LTC polarization conversion functions | |
| Wang et al. | Four ports double Y-shaped ultra-wideband magneto-photonic crystals circulator for 5G communication system | |
| Wu et al. | Observation of nonlinearity and heating-induced frequency shifts in cavity magnonics | |
| Tarapov et al. | Frequency control of the microwave Tamm state | |
| CN114725639B (en) | Four-port circulator based on artificial surface plasmon polariton waves |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190726 |