CN107579328A - A kind of super transparent resonance device of surface electromagnetically induced of E shapes all dielectric - Google Patents
A kind of super transparent resonance device of surface electromagnetically induced of E shapes all dielectric Download PDFInfo
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- CN107579328A CN107579328A CN201710886792.0A CN201710886792A CN107579328A CN 107579328 A CN107579328 A CN 107579328A CN 201710886792 A CN201710886792 A CN 201710886792A CN 107579328 A CN107579328 A CN 107579328A
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Abstract
The invention discloses a kind of super transparent resonance device of surface electromagnetically induced of E shapes all dielectric, including substrate and the E shape dielectric resonance units in two-dimensional and periodic distribution positioned at substrate surface, substrate to be made by dielectric material, and the dielectric constant of substrate is more than 0 and less than or equal to 5；The dielectric constant of E shape dielectric resonance units is more than or equal to 6.The present invention can improve group index, realize slow light effect.Meanwhile the present invention can be used in the senser element of highly sensitive refractive index.
Description
Technical field
The present invention relates to a kind of transparent (class EIT) resonance device of the super surface electromagnetically induced of all dielectric, belong to Meta Materials technology
Field.
Background technology
Transparent electromagnetically induced is produced by interfering between the energy level in polyatomic system.Meta Materials class EIT effects refer to lead to
Cross Meta Materials simulation atomic system and realize the transparent phenomenon of electromagnetically induced.In the last few years, super surface class electromagnetically induced it is transparent due to
Its focus that can be produced the resonance of higher quality factor and turn into nano-photon field.The resonance of high-quality-factor can answer
For in low-loss slower rays device and highly sensitive optical sensor.High group index can more effectively slow down light and exist
The speed of Propagation, realizes slow light effect, opens new direction for the research of nonlinear optics, overcomes detection operations band
The limitation and influence of many difficult and on higher-order nonlinear system the application come, can also improve nonlinear system several numbers
Magnitude, for detection and application angle, there is good application prospect.
Although can realize that electromagnetically induced is transparent in some current all dielectric resonators, but its group index ng
(group of refractive index) and sensitivity S (sensitivity), sensing totality in refractive index sensing
Performance fOM (figure of merit) is relatively low.Therefore, quality factor and group index (group index), realization are improved
The sensing of high sensitivity turns into those skilled in the art's urgent problem to be solved.
The content of the invention
It is existing to overcome it is an object of the invention to provide a kind of super transparent resonance device of surface electromagnetically induced of E shapes all dielectric
All or part of defect of technology.
To achieve the above object, the technical solution used in the present invention is：The super surface electromagnetically induced of E shapes all dielectric of the present invention
Transparent resonance device includes substrate and the E shape dielectric resonance units in two-dimensional and periodic distribution positioned at substrate surface, the base
Bottom is made by dielectric material, and the dielectric constant of substrate is more than 0 and less than or equal to 5；The dielectric constant of the E shapes dielectric resonance unit
More than or equal to 6.
Further, the dielectric constant of substrate of the present invention is more than 0 and less than or equal to 4.
Further, the vertical part medium strip of E shapes dielectric resonance unit of the present invention and the cross section of transverse part medium strip are equal
For rectangle.
Compared with prior art, the present invention has advantages below：
The transparent resonance device structure design of the super surface electromagnetically induced of E shapes all dielectric of the present invention is simple, transparent in electromagnetically induced
Window, corresponding group index ngUp to 10776, there is high group index, more efficiently slowed down the biography of light in media as well
Speed is broadcast, realizes slow light effect.Simultaneously in refractive index sensing, the sensitivity S of sensing to be total up to 326nm/RIU, sensing
Body performance parameter fOM has very high sensitivity and sensing overall performance fOM values up to 1060.In addition, along vertical part medium strip
The position of transverse part medium strip can correspondingly adjust the size of resonance quality factor among adjustment up and down, it is hereby achieved that with not
It is simple and easy with the resonance device of resonance quality factor.
Brief description of the drawings
Fig. 1 is a kind of structural representation (part) of the super transparent resonance device of surface electromagnetically induced of E shapes all dielectric of the present invention；
Fig. 2 is Fig. 1 upward view；
Fig. 3 is that the super transparent resonance device of surface electromagnetically induced of E shape all dielectrics shown in Fig. 1 obtains according to Finite element arithmetic
The Transmittance spectrum curve map in 1700-1900 nanometers；
Fig. 4 is that the transparent resonance device resonance device of the super surface electromagnetically induced of E shape all dielectrics shown in Fig. 1 passes as refractive index
During sense, the sensitivity curve figure of corresponding sensing.
Embodiment
The present invention is further described below in conjunction with accompanying drawing.
A kind of figures 1 and 2 show that structure of the super transparent resonance device of surface electromagnetically induced of E shapes all dielectric of the present invention.
As depicted in figs. 1 and 2, the super transparent resonance device of surface electromagnetically induced of E shapes all dielectric includes substrate 2 and the E positioned at the surface of substrate 2
Shape dielectric resonance unit 1, E shape dielectric resonances unit 1 includes transverse part and vertical part, overall in alphabetical " E " shape.Transverse part medium strip and perpendicular
Portion's medium strip with rectangular strip (i.e. the cross section of vertical part medium strip and transverse part medium strip is rectangle) for preferred embodiment, i.e.,
Cross section using vertical part medium strip and transverse part medium strip is rectangle as preferred embodiment.In Fig. 1, upper transverse part rectangular strip
11st, middle transverse part rectangular strip 12, inferior transverse part rectangular strip 13 are referred to as " transverse part rectangular strip ".E shape dielectric resonances unit 1 can be by upper horizontal stroke
Portion's rectangular strip 11, middle transverse part rectangular strip 12, inferior transverse part rectangular strip 13 are integrally formed and formed with vertical part rectangular strip 14.E shapes are situated between
Matter resonant element 1 is distributed in two-dimensional and periodic.As shown in figure 1, E shape dielectric resonances unit 1 is P along X, Y-direction cycle.Enter
Radio magnetic wave is Z-direction, and the electric field polarization direction of incident electromagnetic wave is Y-direction.Wherein, using the length direction of transverse part rectangular strip as
X-direction, using the length direction of vertical part rectangular strip 14 as Y-direction, using the short transverse of E shape dielectric resonances unit 1 as Z-direction.A is
The length of upper transverse part rectangular strip 11, middle transverse part rectangular strip 12 and inferior transverse part rectangular strip 13, c be vertical part rectangular strip 14 length, b
For the width of upper transverse part rectangular strip 11, middle transverse part rectangular strip 12, inferior transverse part rectangular strip 13 and vertical part rectangular strip 14, h represents E shapes
The height of the transverse part rectangular strip of dielectric resonance unit 1 and vertical part rectangular strip, that is, the height of E shape dielectric resonances unit 1；G1 is upper transverse part square
Interval between shape bar 11 and middle transverse part rectangular strip 12, g2 is between middle transverse part rectangular strip 12 and inferior transverse part rectangular strip 13
Interval.
In the present invention, substrate 2 is made by dielectric material, and the dielectric constant of substrate 2 is more than 0 and less than or equal to 5；E shapes are situated between
The dielectric constant of matter resonant element 1 is more than or equal to 6.As the preferred embodiment of the present invention, the dielectric constant of substrate 2 is more than 0
And less than or equal to 4.
Illustrate the technique effect of the present invention with specific embodiment below.The present invention is used into E shapes all dielectric of the present invention
The super transparent resonance device of surface electromagnetically induced works in the nm of near infrared band 1800, and electromagnetic wave is normal incidence, line polarisation
It is incident.The material of substrate 2 is quartzy, dielectric constant 2.1316；The material of E shape dielectric resonances unit 1 is silicon, and dielectric constant is
13.69。
The Cycle Length in X direction of E shape dielectric resonances unit 1 and be 1050 nanometers along the Cycle Length P of Y-direction, enters
Radio magnetic wave is Z-direction, and the electric field polarization direction of incident electromagnetic wave is Y-direction.Wherein, using the length direction of transverse part rectangular strip as
X-direction, using the length direction of vertical part rectangular strip as Y-direction, using the short transverse of E shape dielectric resonances unit 1 as Z-direction.Transverse part
The length a of rectangular strip is 550 nanometers, and the length c of vertical part rectangular strip is 850 nanometers, and the width b of each rectangular strip is 150 to receive
Rice, the height h of E shape dielectric resonances unit 1 is 250 nanometers.
When g1 is 195 nanometers, g2 is 205 nanometers, the super surface electromagnetically induced of E shape all dielectrics is obtained using FEM calculation
Transparent resonance device being composed transmitted through rate in 1700~1900 nanometer ranges, its curve is as shown in Figure 3.From figure 3, it can be seen that
The super transparent resonance device of surface electromagnetically induced of E shape all dielectrics produces class EIT phenomenons in this frequency range, and wherein cardiac wave is a length of
1798 nanometers, for its resonance peak amplitude up to 0.6, resonance quality factor q can be according to formula Q=f0/ Δ f is calculated (wherein, f0
For resonant frequency corresponding to resonance peaks, when Δ f represents that resonance peak reaches the half of maximum amplitude in electromagnetically induced transparent window
The width of corresponding resonant frequency).It is computed, quality factor can reach 4540.
The value of the group index corresponding to resonance peaks in electromagnetically induced transparent window can be according to formula ng=λ2/
(FWHM*4*t) (wherein, n is estimatedgGroup index is represented, λ represents resonance wavelength corresponding to resonance peaks, and FWHM represents electricity
Resonance peak reaches corresponding resonance wavelength width during the half of maximum amplitude in Magnetic guidance transparent window, and t represents resonating device
Effective thickness).It is computed, group index is up to 10776 corresponding to resonance peaks.
When g1 is 195 nanometers, g2 is 205 nanometers, made with the transparent resonance device of the super surface electromagnetically induced of E shape all dielectrics
For refractive index sensing device when, the sensitivity of corresponding refractive index sensing and sensing Performance Parameters FOM value such as Fig. 4 institutes
Show.Wherein, when adding the sensing substance with certain refractive index, resonance wavelength can produce red shift.It is figure 4, it is seen that clever
Sensitivity S can be calculated according to formula S=Δ λ/Δ n, and (Δ n is the changing value of refractive index, corresponding when Δ λ is changes refractive index
The changing value of resonance wavelength), the S being calculated is up to 326nm/RIU.In addition, Performance Parameters FOM=is sensed according to formula
S/FWHM, FOM is calculated up to 1060.
It should be noted that adjust the position of middle transverse part medium strip up and down along vertical part medium strip by adjusting, thus
Adjust the interval g1 or middle transverse parts rectangular strip 12 and inferior transverse part square between upper transverse part rectangular strip 11 and middle transverse part rectangular strip 12
The value of interval g2 between shape bar 13, it is hereby achieved that different size of resonance quality factor.In addition, resonance device of the present invention
It can be used for the wave bands such as Terahertz, microwave band.
Claims (3)
- A kind of 1. super transparent resonance device of surface electromagnetically induced of E shapes all dielectric, it is characterised in that：Including substrate and positioned at substrate table The E shape dielectric resonance units in two-dimensional and periodic distribution in face, the substrate are made by dielectric material, and the dielectric constant of substrate is big In 0 and less than or equal to 5；The dielectric constant of the E shapes dielectric resonance unit is more than or equal to 6.
- 2. the super transparent resonance device of surface electromagnetically induced of E shapes all dielectric according to claim 1, it is characterised in that：Substrate Dielectric constant be more than 0 and less than or equal to 4.
- 3. the super transparent resonance device of surface electromagnetically induced of E shapes all dielectric according to claim 1 or 2, it is characterised in that：Institute It is rectangle to state the vertical part medium strip of E shape dielectric resonance units and the cross section of transverse part medium strip.
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Cited By (7)
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| CN109193100A (en) * | 2018-08-03 | 2019-01-11 | 中国计量大学 | A kind of super transparent resonance device of surface class electromagnetically induced of all dielectric |
| CN109301427A (en) * | 2018-10-29 | 2019-02-01 | 哈尔滨学院 | It is a kind of that transparent resonator and preparation method thereof is induced based on aluminium-graphene amplitude adjustable electromagnetic |
| CN110408907A (en) * | 2019-08-05 | 2019-11-05 | 安徽大学 | Detect the super surface sensing platform of all dielectric and design method of tumor biomarker |
| CN110416683A (en) * | 2019-07-12 | 2019-11-05 | 中国计量大学 | A kind of high-quality-factor all dielectric Meta Materials annular dipole resonance device |
| CN112557338A (en) * | 2020-11-20 | 2021-03-26 | 广东省农业科学院农产品公共监测中心 | Terahertz superstructure sensor based on multi-feature unit and use method thereof |
| CN112585083A (en) * | 2018-05-15 | 2021-03-30 | 杜兰教育基金委员会 | Refractive index sensor and method |
| CN112928485A (en) * | 2021-01-26 | 2021-06-08 | 山东大学 | Terahertz electromagnetic induction transparent metamaterial based on graphene active tuning and application |
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| CN112585083A (en) * | 2018-05-15 | 2021-03-30 | 杜兰教育基金委员会 | Refractive index sensor and method |
| CN109193100A (en) * | 2018-08-03 | 2019-01-11 | 中国计量大学 | A kind of super transparent resonance device of surface class electromagnetically induced of all dielectric |
| CN109193100B (en) * | 2018-08-03 | 2020-01-21 | 中国计量大学 | Full-medium super-surface electromagnetic induction transparent resonance device |
| CN109301427A (en) * | 2018-10-29 | 2019-02-01 | 哈尔滨学院 | It is a kind of that transparent resonator and preparation method thereof is induced based on aluminium-graphene amplitude adjustable electromagnetic |
| CN110416683A (en) * | 2019-07-12 | 2019-11-05 | 中国计量大学 | A kind of high-quality-factor all dielectric Meta Materials annular dipole resonance device |
| CN110416683B (en) * | 2019-07-12 | 2020-12-11 | 中国计量大学 | High-quality factor all-dielectric metamaterial annular dipole resonance device |
| CN110408907A (en) * | 2019-08-05 | 2019-11-05 | 安徽大学 | Detect the super surface sensing platform of all dielectric and design method of tumor biomarker |
| CN110408907B (en) * | 2019-08-05 | 2021-03-12 | 安徽大学 | All-dielectric super-surface sensing platform for detecting tumor biomarkers and design method |
| CN112557338A (en) * | 2020-11-20 | 2021-03-26 | 广东省农业科学院农产品公共监测中心 | Terahertz superstructure sensor based on multi-feature unit and use method thereof |
| CN112928485A (en) * | 2021-01-26 | 2021-06-08 | 山东大学 | Terahertz electromagnetic induction transparent metamaterial based on graphene active tuning and application |
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