CN208654016U - A kind of chirality optical device - Google Patents
A kind of chirality optical device Download PDFInfo
- Publication number
- CN208654016U CN208654016U CN201820970984.XU CN201820970984U CN208654016U CN 208654016 U CN208654016 U CN 208654016U CN 201820970984 U CN201820970984 U CN 201820970984U CN 208654016 U CN208654016 U CN 208654016U
- Authority
- CN
- China
- Prior art keywords
- chiral
- optical device
- metal film
- seam
- enhancing
- 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.)
- Active
Links
Landscapes
- Polarising Elements (AREA)
Abstract
The utility model relates to a kind of chiral optical devices, comprising: substrate and the metal film in the substrate；Wherein, several are provided on the metal film through the upper and lower surface of the metal film and the chiral building block that is arranged in array, the chiral building block includes: the U-shaped seam in basis and enhancing c-type seam being disposed adjacent.The chiral optical device of the utility model significantly increases the circular dichroism of the chirality optical device by a kind of metal film with the U-shaped seam in basis and enhancing c-type seam.
Description
Technical field
The utility model belongs to optical device field, and in particular to a kind of chirality optical device.
Background technique
Chirality refers to the property that structure cannot be overlapped with its mirror image, and chiral structure is prevalent in the Nature, such as egg
The large biological molecules such as white matter, carbohydrate and DNA, chirality play a key role in biochemistry and life concern.Chiral root
It can be divided into according to its design feature: inherent chiral and external chirality.The chirality that inherent chiral i.e. structure itself has, external chirality
Refer to the chirality that structure is constituted together with incident light.
Circular dichroism (Circular Dichroism, CD) is research one highly important means of chipal compounds.?
In the research of chiral molecules asymmetry, when left circularly polarized light and right-circularly polarized light incidence, chiral material can show
Different effective refractive indexs and spread speed is also different.When Meta Materials have extremely strong chirality, or even negative index can be showed,
Material with negative refractive index is also referred to as chiral Meta Materials.Can be stealthy to object progress using material with negative refractive index, it realizes to break through and spread out
Subwavelength resolution imaging of emitter-base bandgap grading limit etc..This has the research in the fields such as physics, engineering science, optics and materialogy can
Great influence can be generated.Therefore become the research class of electromagnetism and optical field forefront for the research of chiral structure
Topic.
In the chiral structural research of the prior art, it may be implemented pair by designing two-dimensional metallic film chiral structure
The modulation of light beam polarization characteristic or for detecting the circular dichroism spectra of chiral material, but when detected signal itself is fainter
When, obtained circular dichroism spectra signal is unobvious, i.e., detection effect is not so good.
Utility model content
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of chiral optical device.This
Utility model technical problems to be solved are achieved through the following technical solutions:
The utility model embodiment provides a kind of chiral optical device, comprising: substrate and the gold in the substrate
Belong to film；Wherein,
Several are provided on the metal film through the upper and lower surface of the metal film and the chirality that is arranged in array
Structural unit, the chiral building block include: the U-shaped seam in basis and enhancing c-type seam being disposed adjacent.
In one embodiment of the utility model, the U-shaped seam in basis and the bottom alignment of enhancing c-type seam, and institute
It is identical with the height of the enhancing c-type seam to state the U-shaped seam in basis.
In one embodiment of the utility model, the chiral building block the metal film it is horizontal and vertical on
It is all evenly distributed.
In one embodiment of the utility model, period 1 that the chiral building block arranges in the horizontal direction and
The second round length vertically arranged is identical.
In one embodiment of the utility model, the material of the substrate is translucent material.
Compared with prior art, the utility model has the beneficial effects that
The chiral optical device of the utility model makes this by a kind of metal film with the U-shaped seam in basis and enhancing c-type seam
The circular dichroism of chiral optical device is significantly increased.
Detailed description of the invention
Fig. 1 is a kind of schematic perspective view of chiral optical device of the utility model embodiment；
Fig. 2 is a kind of structural schematic diagram of the metal film of chiral optical device of the utility model embodiment；
Fig. 3 is a kind of structural schematic diagram of the chiral building block of chiral optical device of the utility model embodiment；
Fig. 4 is the schematic illustration that a kind of chiral optical device provided by the embodiment of the utility model generates circular dichroism；
Fig. 5 a is the Structure Comparison figure of the chiral building block provided by the embodiment of the utility model without enhancing c-type seam；
Fig. 5 b is the Structure Comparison figure of the chiral building block with enhancing c-type seam provided by the embodiment of the utility model；
Fig. 6 is the chiral building block circular dichroism transmitted light with enhancing c-type seam provided by the embodiment of the utility model
Spectrogram；
Fig. 7 is chiral building block circular dichroism spectra comparison diagram provided by the embodiment of the utility model.
Specific embodiment
Further detailed description, but the embodiment party of the utility model are done to the utility model combined with specific embodiments below
Formula is without being limited thereto.
Embodiment one
Illustrate referring to Figure 1 with Fig. 2, Fig. 1 for a kind of stereochemical structure of chiral optical device of the utility model embodiment
Figure, Fig. 2 are a kind of structural schematic diagram of the metal film of chiral optical device of the utility model embodiment；The chirality optical device
It include: substrate 11, the metal film 12 in substrate 11；
The material of substrate 11 uses the material for having high transmittance to optical band used, such as silica, quartz.
It is provided with several on the metal film 12 through the upper and lower surface of the metal film 12 and is arranged in array
Chiral building block 13, the chiral building block 13 include: the U-shaped seam 22 in basis and enhancing c-type seam 23 being disposed adjacent.
In metal film 12, chiral building block 13 metal film 12 it is horizontal and vertical on all evenly distributed, chiral structure
The period 1 of the arrangement of unit 13 in the horizontal direction is Px, and the second round of arrangement along the vertical direction is Py.Period 1
It is Py length range for Px and second round is 400~1000nm.Px can be equal with Py, can not also wait.
Fig. 3 is referred to, Fig. 3 is a kind of structure of the chiral building block of chiral optical device of the utility model embodiment
Schematic diagram.The chiral building block includes metal film 21, the U-shaped seam 22 in the basis on metal film 21, is located on metal film 21
Enhancing c-type seam 23.
Wherein, the U-shaped seam in basis and enhancing c-type seam bottom alignment, and the U-shaped seam in basis is identical with the height of enhancing c-type seam.Base
The height of the U-shaped seam of plinth and enhancing c-type seam can be the same or different.
The shape of metal film 21 is rectangle, it is preferable that the shape of metal film 21 is square.Two of 21 rectangle of metal film
Side length is defined as the first side length and the second side length, and the first side length is the integral multiple of period 1, and the second side length is second round
Integral multiple；
The thickness range of metal film 21 is 20nm~100nm, and the material of metal film 21 uses good conductor, including gold, silver,
The noble metals such as copper, aluminium.
The U-shaped seam 22 in basis includes three arms, respectively the first left arm, right arm, the first lower arm, and length is followed successively by l1、l2、
l3, the first left arm, right arm, the first lower arm length range be 100nm~300nm, the first left arm, right arm, the first lower arm
Length can be equal, can not also wait；First left arm, right arm, the first lower arm width w having the same1, w1Magnitude range is
30nm~50nm；The thickness range of the U-shaped seam 22 in basis is 20nm~100nm.
Enhancing C-shaped seam 23 includes three arms, and respectively upper arm, the second lower arm, the second left arm, length is followed successively by l4、l5、
l6, upper arm, the second lower arm, the second left arm length range be 100nm~300nm, upper arm, the second lower arm, the second left arm
Length can be equal, can not also wait；Upper arm, the second lower arm, the second left arm width w having the same2, magnitude range 30nm
~50nm, w1It can be with w2It is identical, it can also be different；The thickness range for enhancing c-type seam 23 is 20nm~100nm.
Basis it is U-shaped seam 22 with enhancing c-type seam 23 on chiral building block 13 laterally side by side, the second lower arms of the first lower arm
Be located along the same line, basis it is U-shaped seam 22 and enhancing c-type seam 23 between be divided between the first right arm and the second left arm away from
From being divided into d, interval d and width w1、w2Close range, be 30nm~50nm, d can be with w1、w2It is identical, it can also not
Together.
Preferably, metal film 21 is using golden material, the period 1 Px and second round Py length of chiral building block 13
Be 500nm, metal film 21 with a thickness of 30nm；First left arm of the U-shaped seam in basis, right arm, the first lower arm length l1、l2、l3
It is equal, i.e. l1=l2=l3=200nm, width w1=40nm, with a thickness of 30nm；Enhance the upper arm of c-type seam, the length of the second lower arm
Spend l4、l5It is equal, i.e. l4=l5=180nm, the length l of the second left arm6With the right arm length l of the U-shaped seam in basis2Equal l6=l2=
200nm, i.e. width w1=40nm, with a thickness of 30nm；Interval d between the U-shaped seam 22 in basis and enhancing c-type seam 23 is 40nm.
The chiral optical device of the utility model makes this by a kind of metal film with the U-shaped seam in basis and enhancing c-type seam
The circular dichroism of chiral optical device is significantly increased.
Embodiment two
Fig. 4 is referred to, Fig. 4 is the original that a kind of chiral optical device provided by the embodiment of the utility model generates circular dichroism
Manage schematic diagram.When a branch of left-hand polarization light (left circularly polarized, LCP) from an incident angle from this
When chiral optical device front incidence, after the chirality optical device, the transmissivity of the left-hand polarization light received is T--,
When a branch of right-handed polarized light (right circularlypolarized, RCP) with identical incident angle from the chirality optical device
Positive incident, after the chirality optical device, the transmissivity of the right-handed polarized light received is T++, wherein subscript " -- " table
It is shown as left-hand polarization light, " ++ " is expressed as right-handed polarized light, then the circular dichroism of the chiral building block can indicate are as follows:
CD=T++-T--
The transmissivity of left-hand polarization light and right-handed polarized light after chiral optical device be it is different, i.e. T++ ≠
T--, therefore, the size of CD represent the power of the circular dichroism of chiral optical device.
Referring to Fig. 5 a and Fig. 5 b, Fig. 5 a is the chiral structure provided by the embodiment of the utility model without enhancing c-type seam
The Structure Comparison figure of unit；Fig. 5 b is the knot of the chiral building block with enhancing c-type seam provided by the embodiment of the utility model
Structure comparison diagram；Wherein, metal film 21 is using golden material, the first side length of metal film 21, the second side length, period 1, second week
Phase is equal, and length is 500nm, metal film 21 with a thickness of 30nm；The first left arm, right arm, the first lower arm of the U-shaped seam in basis
Length l1、l2、l3It is equal, i.e. l1=l2=l3=200nm, width w1=40nm, with a thickness of 30nm.In Fig. 5 b, enhancing c-type seam
Upper arm, length l4, l5 of the second lower arm it is equal, i.e. the U-shaped seam of l4=l5=180nm, the length l6 of the second left arm and basis
The equal l6=l2=200nm of right arm length l2, i.e. width w1=40nm, with a thickness of 30nm；The U-shaped seam 22 in basis and enhancing c-type seam
Interval d between 23 is 40nm.
Fig. 6 is referred to, Fig. 6 is the chiral building block circle two with enhancing c-type seam provided by the embodiment of the utility model
Color transmitted light spectrogram；Wherein, " T-- " is expressed as left-hand polarization light, and " T++ " is expressed as right-handed polarized light；Circularly polarized light is in z-x
In plane, left and right optically-active is allowed to enhance the chiral structure list of c-type seam to addition with 45° angle oblique incidence each along x and z negative direction
In member, Fig. 6 is obtained；
Fig. 7 is referred to, Fig. 7 is chiral building block circular dichroism spectra comparison diagram provided by the embodiment of the utility model, wherein
Circularly polarized light in z-x plane, allow left and right optically-active each along x and z negative direction with 45° angle oblique incidence to being not added with enhancing c-type
On the chiral building block (as shown in Figure 5 a) of seam and the chiral building block (as shown in Figure 5 b) of addition enhancing c-type seam, obtain
Fig. 7.As seen from Figure 7, in the CD spectrum of chiral building block for being not added with enhancing c-type seam, CD is at wavelength X=860nm
7.4%, CD is 16.5% at wavelength X=860nm in the CD spectrum of the chiral building block of addition enhancing c-type seam.This is because,
Before addition enhancing c-type seam, chiral building block only generates electric dipole, and the addition of enhancing c-type seam changes original basis U
Type stitches the current direction on chiral building block, magnetic dipole occurs at enhancing c-type seam, due to electric dipole and magnetic dipole
The collective effect of son, CD signal are significantly increased.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the protection scope of the utility model.
Claims (5)
1. a kind of chirality optical device characterized by comprising substrate and the metal film in the substrate；Wherein,
Several are provided on the metal film through the upper and lower surface of the metal film and the chiral structure that is arranged in array
Unit, the chiral building block include: the U-shaped seam in basis and enhancing c-type seam being disposed adjacent.
2. chirality optical device as described in claim 1, which is characterized in that the U-shaped seam in basis and the enhancing c-type stitch bottom
Portion's alignment, and the U-shaped seam in the basis is identical with the height of the enhancing c-type seam.
3. chirality optical device as described in claim 1, which is characterized in that the chiral building block is in the metal film
It is all evenly distributed on horizontal and vertical.
4. chirality optical device as described in claim 1, which is characterized in that the chiral building block arranges in the horizontal direction
Period 1 it is identical with the second round length vertically arranged.
5. chirality optical device as described in claim 1, which is characterized in that the material of the substrate is translucent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970984.XU CN208654016U (en) | 2018-06-22 | 2018-06-22 | A kind of chirality optical device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820970984.XU CN208654016U (en) | 2018-06-22 | 2018-06-22 | A kind of chirality optical device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208654016U true CN208654016U (en) | 2019-03-26 |
Family
ID=65781809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820970984.XU Active CN208654016U (en) | 2018-06-22 | 2018-06-22 | A kind of chirality optical device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208654016U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187363A (en) * | 2018-06-22 | 2019-01-11 | 西安科锐盛创新科技有限公司 | A kind of chirality optical device |
-
2018
- 2018-06-22 CN CN201820970984.XU patent/CN208654016U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187363A (en) * | 2018-06-22 | 2019-01-11 | 西安科锐盛创新科技有限公司 | A kind of chirality optical device |
| CN109187363B (en) * | 2018-06-22 | 2021-10-15 | 西安科锐盛创新科技有限公司 | Chiral optical device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Xue et al. | Narrowband perovskite photodetector-based image array for potential application in artificial vision | |
| Schäferling et al. | Formation of chiral fields in a symmetric environment | |
| CN102103222B (en) | Method for fabricating color filter using surface plasmon and method for fabricating liquid crystal display device | |
| CN106249337B (en) | Wire grating polaroid and liquid crystal display device | |
| CN105320314B (en) | Touch control display apparatus | |
| CN106024706B (en) | Array substrate and preparation method thereof | |
| CN105389552A (en) | Fingerprint identification module, preparation method thereof and display device | |
| CN102103223A (en) | Color filter using surface plasmons, liquid crystal display device and method for fabricating the same | |
| CN208654016U (en) | A kind of chirality optical device | |
| CN109187363A (en) | A kind of chirality optical device | |
| CN104518835B (en) | A kind of reception device of visible light communication mimo system | |
| CN208752320U (en) | A kind of chiral metal nano thin-film optical texture | |
| CN106200012A (en) | A kind of chirality superstructure using metal silicide | |
| WO2023241324A1 (en) | Bipolar self-driven polarized photodetector of nested grating structure | |
| Wang et al. | Metamaterial optical refractive index sensor detected by the naked eye | |
| CN110196463A (en) | It is able to carry out the display panel of three axis zooming transforms | |
| CN208888495U (en) | A kind of combined metal nanometer thin film chirality optical texture of double structure | |
| CN101571643A (en) | Liquid crystal display apparatus | |
| WO2017173688A1 (en) | 3d display device | |
| CN208834018U (en) | The combined metal nanometer thin film chirality optical device of double structure | |
| CN109031679A (en) | A kind of combined metal nanometer thin film chirality optical texture of double structure | |
| CN208314348U (en) | The combined metal nanometer thin film chirality optical device of double structure | |
| CN208833932U (en) | A kind of chiral metal nano thin-film optical texture | |
| CN209102943U (en) | Structure of polarized light and display device | |
| CN102944908A (en) | Color filter and preparation method thereof, as well as liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190702 Address after: Room 903, Mingjia Science and Technology Building, No. 99 Shengli Road, Jiangning District, Nanjing, Jiangsu Province (Jiangning Development Zone) Patentee after: Nanjing Jason Photoelectric Technology Co., Ltd. Address before: 710065 Xi'an new hi tech Zone, Shaanxi, No. 86 Gaoxin Road, No. second, 1 units, 22 stories, 12202 rooms, 51, B block. Patentee before: Xi'an CREE Sheng Creative Technology Limited |