CN104570282B - Silver-doped defect negative refraction photonic crystal three-flat plate group detection system - Google Patents
Silver-doped defect negative refraction photonic crystal three-flat plate group detection system Download PDFInfo
- Publication number
- CN104570282B CN104570282B CN201410744254.4A CN201410744254A CN104570282B CN 104570282 B CN104570282 B CN 104570282B CN 201410744254 A CN201410744254 A CN 201410744254A CN 104570282 B CN104570282 B CN 104570282B
- Authority
- CN
- China
- Prior art keywords
- silver
- flat
- defect
- photonic crystal
- central shaft
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
Abstract
The invention discloses a silver-doped defect negative refraction photonic crystal three-flat plate group detection system. The system comprises upper, middle and lower parallel flat plate lenses with silver-doped defect impurities, wherein silver-doped defects on the upper and the lower flat plate lenses are in bilateral symmetry relative to central axis Y and in longitudinal symmetry relative to central axis X, the central axis Y in the top row is taken as a boundary, seventh air holes which are respectively arranged in the left direction and the right direction of the central axis X are the silver-doped defects, and in the various rows of air holes below the top row of the air holes row by row, the air holes which are sequentially dislocated outwards in the left direction and the right direction are the silver-doped defects till the air holes in the row in which the central axis X is located; the silver-doped defects on the middle flat plate lens are in bilateral symmetry relative to the central axis Y, the central axis Y in the top row is taken as the boundary, the fifth air holes which are respectively arranged in the left direction and the right direction of the central axis X are the silver-doped defects, and from the various rows of the air holes from top to bottom, the air holes which are sequentially dislocated outwards in the left direction and the right direction are the sliver-doped defects, so that the re-focusing resolution of the system is improved.
Description
Technical field
The invention belongs to optical technical field, more precisely, is related to a kind of negative refraction effect of utilization photonic crystal panel
The optical technology of super lenses should be made.
Background technology
Traditional image device --- lens, make optical system imaging mainly by the curvature on its surface, common saturating
The resolution of mirror can not reach optical wavelength rank, and (visible light wave wave-length coverage is 390nm-780nm）；Gradient-index lens are
What the cylindric medium being radially parabolically distributed by refractive index was constituted, can play poly-（Dissipate）The two kinds of effects of light or imaging, it
With focal beam spot diameter very little and the characteristics of high resolution, thus it is widely used in fiber coupling, light splitting, partial wave, light and opens
Record etc. is put in pass, photocopier miniaturization, laser-optical disk.
LHM（LHM）Detect and be imaged in near-field target and paid special attention to, it is negative with flat surfaces
Refractive index LHM flat-plate lens are also suggested as condenser lenses.Theory analysis and numerical simulation show by LHM system
The lens of work compare the focus resolution that traditional image device can break through diffraction limit, and with higher image resolution ratio.
Document Wang G, Fang J R, Dong X T. Refocusing of backscattered
microwaves in target detection by using LHM flat lens. Opt Expr,2007,15(6):
3312D3317, and document Wang G, Fang J R, Dong X T. Resolution of Near-field
microwave target detection and imaging by using flat LHM lens. IEEE Trans
Antennas Propog, 2007,55(12):3534D3541, discloses the negative refraction photon that silver-colored defect is mixed using single nothing
Crystalline lens apply the technology in microwave sounding, can preferably improve refocusing resolution, and which is to diameter D=1/6（Deng
In）Circular PEC（Perfect electric conductor）Target（Target i.e. to be detected）Refocusing resolution is 0.257。
Chinese Patent Application No. is the 201310544501.1, entitled " detection constituted using double flat plate negative refraction 2 D photon crystal
System " discloses a kind of concrete structure includes the detection system of light source, detector, upper flat plate and lower flat board, and wherein upper flat plate is with
Flat board is parallel to each other, and two flat boards are 2 D photon crystal material with negative refractive index composition, by etching three in GaAs medium substrates
Make in the cylindrical air hole of angle lattice arrangement.A few defect is mixed, it is more saturating than single flawless negative refraction photonic crystal
Mirror further increases refocusing resolution, and refocusing resolution reaches 0.165（It is equal to）, but
Apart from little, refocusing resolution is still little for its longitudinal probing in Y-axis.
The content of the invention
The invention aims to further increase the longitudinal probing distance of lens combination and further improve refocusing
Resolution, proposes that one kind mixes three flat board group detection system of silver-colored defect negative refraction photonic crystal.
For achieving the above object, the technical solution used in the present invention is：The present invention includes the light source of position coincidence and detection
Device, put above the light source with detector three pieces of upper, middle and lower it is parallel, by air insulated, have and mix the equivalent of silver-colored defect impurity
Negative refraction photonic crystal panel lens, every piece of flat-plate lens are by GaAs medium substrates column type of the etching in triangle arrangement
Airport is constituted；The arrangement architecture for mixing silver-colored defect on upper and lower flat-plate lens is identical, be with central shaft Y it is symmetrical, with
Axle X is symmetrical above and below for the heart, is most to go up a row with central shaft Y as boundary, empty along the 7th of the arrangement of left and right direction of central shaft X respectively
To mix silver-colored defect, from most going up, an emptying pore is in turn each downwards to be emptied in pore pore, in turn outside again in left and right direction
One airport of dislocation is to mix silver-colored defect, till this emptying pore that central shaft X is located；On central flat lens
Mix silver-colored defect symmetrical with central shaft Y, a row is most gone up with central shaft Y as boundary, respectively along the left and right direction arrangement of central shaft X
The 5th airport to mix silver-colored defect, in each emptying pore from top to bottom, the left and right airport that misplaces outward successively is
Mix silver-colored defect.
The present invention is had an advantageous effect in that after adopting above-mentioned technical proposal：
1st, the present invention according to mix metal ion defects, occur in forbidden photon band the very high impurity state of quality factor,
The enhanced principle of spontaneous radiation can also be realized, using by three pieces of parallel NR-PC（Negative Refractive-
Photonic Crystal, equivalent negative refraction photonic crystal）Flat-plate lens constitute detection imaging system, in negative refraction photonic crystal
Middle incorporation argent（Ag）Defect impurity, adjusts position, the structure of doping, further increases the refocusing resolution of system,
So as to " perfect imaging " is capable of achieving to fine structure, optimum combination is realized.
2nd, the present invention further increases the longitudinal probing distance of lens combination using three blocks of plates, improves light wave in the saturating of flat board
Rate is penetrated, the electromagnetic wave loss caused by the multipath reflection and refraction institute that air is occurred with NR-PC flat boards contact surface is compensated.Due to micro-
Forbidden band and resonant excitation effect, light wave very strong light-wave transmission peak after NR-PC flat boards, occurs at resonant frequency,
The all the components of light field（Transmission wave and evanescent wave）Imaging can be participated in without loss, thus can break through diffraction limit realization
It is sub- to focus on resolution imaging, it is greatly enhanced the refocusing transversal scanning resolution and image resolution ratio of target backward scattered wave.
3rd, defective photonic crystal system is capable of achieving stronger stimulated radiation with the characteristic to wavefield energy localization
Amplify, absorption loss then can be effectively reduced by resonance tunneling effect.Doping metals Defect Photonic Crystal in the present invention
Structure can increase the phenomenon of transmission, simultaneously as NR-PC flat-plate lens can be focused to wave field as ordinary lenses
Amplify, when above-mentioned effect has further compensated for one layer of doping of loss of light propagation in the photonic crystal, only occur in that in one
Heart Defect Modes.When double doping layer and three layers of doping in addition to all there is central defect mould, also occur in the both sides of central defect mould
Two symmetric defects moulds.The halfwidth of central defect mould reduces with the increase of the doping number of plies；The peak height of symmetric defects mould and
Halfwidth all reduces with the increase of the doping number of plies；The position of symmetric defects mould with doping the number of plies increase and to central defect mould
It is mobile.Therefore, appropriate argent defect is mixed, the tri- flat-plate lens groups of NR-PC that re-optimization is combined drastically increase tested
The lateral resolution and distance of target.Meanwhile, the emulation reality of the position distribution and lattice structure of silver-colored defect is mixed by repeatedly regulation
Test to compare and draw：Under flat hexagon shape, trapezoidal shape distribution situation, optimal resolution can be reached.
4th, resolution of the present invention reaches 0.16472, does not mix silver-colored defect with three plates（Refocusing resolution：0.3612）Compare,
Refocusing resolution improves 0.19648.With the utilization LHM flat-plate lens disclosed in two parts of documents in background technology to phase
The refocusing resolution that dynamic scan detection is obtained is carried out with big Small object（Refocusing resolution：0.257）Compare and improve
0.09228, with veneer without mixing silver-colored defect（Refocusing resolution：0.2564）Compare and improve 0.09168.Illustrate in NR-PC tri-
Argent defect is mixed in flat-plate lens group and by different combinations, optimal resolution can be reached, hence it is evident that improve to mesh
Target scans ability and distance, also increases while mixing silver-colored defect sturcture than veneer and comparing, so as to optimize detection imaging system
The performance of system.
Description of the drawings
Fig. 1 is the structural representation for mixing three flat board group detection system of silver-colored defect negative refraction photonic crystal of the present invention；
In figure：1. underlying structure；2. silver-colored defect is mixed；3. target is detected；4. light source；5. detector.
Specific embodiment
Referring to Fig. 1, the whole detection system of the present invention is lacked by the parallel silver of mixing in three blocks of light source 4, detector 5 and upper, middle and lower
The NR-PC of sunken impurity（Equivalent negative refraction photonic crystal）Flat-plate lens are constituted, and it is flat that three pieces of flat-plate lens constitute photonic crystal three
Plate lens group.By air insulated between three flat-plate lens, the air insulated between adjacent two pieces of flat-plate lens apart from identical is
d.Wherein, the silver-colored defect arrangement architecture of upper and lower flat-plate lens A, C is identical, between upper and lower two pieces of flat-plate lens A, C in
Between flat-plate lens B structure it is slightly different.With the structure of Fig. 1 as a cycle unit, by three flat-plate lens group of photonic crystal to x side
To（Length direction）Left and right arbitrarily extends, and constitutes a detection imaging system.Detection target 3 aimed dia beD=1/6, put
It is placed at 2 μm of the upper surface of upper flat plate lens A.Light source 4 is in the lower section of lower flat-plate lens C, the light wave of the transmitting of light source 4
Frequency of heart be 0.3068 (a/), it is placed at 3.5 μm of the lower surface of lower flat-plate lens C, detector 5 and 4 position of light source
Overlap, the vertical dimension between detector 5 and the lower surface of lower flat-plate lens C is also 3.5 μm.
The underlying structure 1 of every piece of flat-plate lens A, B, C, is in GaAs medium substrates column type of the etching in triangle arrangement
Airport is constituted, and airport is arranged as Y-direction under GaAs medium substrates（Width）7 rows, X-direction take 30 row, such as Fig. 1
It is shown.Wherein, the relative dielectric constant of GaAs medium substrates is=12.96, the radius of airport is 0.4a, and a is two-dimentional light
The lattice paprmeter of sub- crystal.
Upper flat plate lens A is identical with the arranged distribution for mixing silver-colored defect on lower flat-plate lens C.As a example by above flat-plate lens A：
Silver-colored defect 2 is mixed in XY coordinate planes in flat hexagon shape, it is so-called to mix silver-colored defect 2 i.e. in the partial air of GaAs medium substrates etching
Hole mixes silver-colored molecular material.Upper flat plate lens A's most goes up a row with the central shaft Y of Y-direction as boundary, respectively along a left side of central shaft X,
To mix silver-colored defect 2, from most going up, a row is in turn each downwards to be arranged, in turn in left and right side for 7th airport of right direction arrangement
To the airport that outwards misplaces again to mix silver-colored defect 2, until the center O of upper flat plate lens A（Origin O）This row that is located is
Only, or central shaft x be located this row be boundary.Being located from center O, this is arranged in beginning in turn downward each row, and each row is in turn
Inwardly one airport of dislocation is to mix silver-colored defect 2.Silver-colored defect 2 of mixing above the O of center in each row is gradually distance from center from top to bottom
Axle Y, and the silver-colored defect 2 of mixing below the O of center in each row is moved closer to from top to bottom near central shaft Y.Therefore, upper flat plate lens A
With on lower flat-plate lens C to mix silver-colored defect 2 each symmetrical with central shaft Y, it is respectively symmetrical above and below with central shaft X.Thus, making flat
Silver-colored defect 2 of mixing on plate lens A and lower flat-plate lens C is in flat hexagon shape in XY coordinate planes.
The arrangement for mixing silver-colored defect 2 of central flat lens B is：The row that most goes up of central flat lens B with central shaft Y is
Boundary, the 5th airport for arranging along the left and right directions of central shaft x respectively to mix silver-colored defect 2, each emptying pore from top to bottom
In, the left and right airport that misplaces outward successively is to mix silver-colored defect 2.That is silver-colored defect 2 is mixed with center on central flat lens B
Axle Y is symmetrical, and is gradually distance from central shaft Y from top to bottom, thus, making to mix silver-colored defect 2 in XY on central flat lens B
The trapezoidal shape distribution of coordinate plane.
The present invention after doping metals silver defect, is swept using tri- flat-plate lens group dynamics of NR-PC in NR-PC flat-plate lens groups
Scheme being retouched, in the case of keeping target constant, taking light source 4 synchronizing moving to be combined with both detectors 5, target is backward
The refocusing transversal scanning resolution of scattered wave and image resolution ratio can obtain larger raising, preferably improve detection imaging
The performance of system.
Claims (5)
1. one kind mixes three flat board group detection system of silver-colored defect negative refraction photonic crystal, including the light source and detector of position coincidence,
It is characterized in that：Put above the light source with detector three pieces of upper, middle and lower it is parallel, by air insulated, have and mix silver-colored defect impurity
Equivalent negative refraction photonic crystal panel lens, every piece of flat-plate lens be by GaAs medium substrates etching in triangle arrangement
Cylindrical air hole is constituted；The arrangement architecture for mixing silver-colored defect on upper and lower flat-plate lens is identical, is right with central shaft Y or so
Claim, it is symmetrical above and below with central shaft X, be most to go up a row with central shaft Y as boundary, respectively along the left and right direction arrangement of central shaft X
To mix silver-colored defect, from most going up, an emptying pore is in turn each downwards to be emptied in pore, in turn in left and right side 7th airport
To the airport that outwards misplaces again to mix silver-colored defect, till this emptying pore that central shaft X is located；Central flat
On lens to mix silver-colored defect symmetrical with central shaft Y, most go up a row with central shaft Y as boundary, respectively along the left and right of central shaft X
5th airport of direction arrangement is to mix silver-colored defect, in each emptying pore from top to bottom, left and right to misplace one outward successively
Airport is to mix silver-colored defect.
2. three flat board group detection system of silver-colored defect negative refraction photonic crystal is mixed according to claim 1, be it is characterized in that：Apart from upper
Detection target is put at 2 μm of the upper surface of flat-plate lens, aimed dia isD=1/6,It is equal to；Detector
Overlap with light source position, detector and the position that light source is placed on the vertical dimension between lower flat-plate lens lower surface is 3.5 μm
Place is put, the light wave mid frequency of light source transmitting is 0.3068.
3. three flat board group detection system of silver-colored defect negative refraction photonic crystal is mixed according to claim 1, be it is characterized in that：Airport
7 row of Y-direction is arranged as under GaAs medium substrates, X-direction 30 is arranged, the radius of airport is 0.4a, and a is that two-dimensional photon is brilliant
The lattice paprmeter of body.
4. three flat board group detection system of silver-colored defect negative refraction photonic crystal is mixed according to claim 1, be it is characterized in that： GaAs
The relative dielectric constant of medium substrate is=12.96。
5. three flat board group detection system of silver-colored defect negative refraction photonic crystal is mixed according to claim 1, be it is characterized in that：Adjacent two
Air insulated between block flat-plate lens is apart from identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744254.4A CN104570282B (en) | 2014-12-09 | 2014-12-09 | Silver-doped defect negative refraction photonic crystal three-flat plate group detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410744254.4A CN104570282B (en) | 2014-12-09 | 2014-12-09 | Silver-doped defect negative refraction photonic crystal three-flat plate group detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104570282A CN104570282A (en) | 2015-04-29 |
| CN104570282B true CN104570282B (en) | 2017-05-03 |
Family
ID=53086772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410744254.4A Expired - Fee Related CN104570282B (en) | 2014-12-09 | 2014-12-09 | Silver-doped defect negative refraction photonic crystal three-flat plate group detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104570282B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740907A (en) * | 2004-08-24 | 2006-03-01 | 盟图科技股份有限公司 | Structure for improving optical mask resolution ratio utilizing photon crystal |
| CN103630999A (en) * | 2013-11-06 | 2014-03-12 | 江苏大学 | NC-PC (Negative Refraction Photonic Crystal) double-panel lens system capable of increasing refocusing resolution ratio |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007279084A (en) * | 2006-04-03 | 2007-10-25 | Nikon Corp | Wavelength conversion optical system, laser light source, exposure device, inspection object inspecting device, and processing device for polymer crystal |
| JP2008293600A (en) * | 2007-05-25 | 2008-12-04 | Funai Electric Co Ltd | Optical pickup |
-
2014
- 2014-12-09 CN CN201410744254.4A patent/CN104570282B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1740907A (en) * | 2004-08-24 | 2006-03-01 | 盟图科技股份有限公司 | Structure for improving optical mask resolution ratio utilizing photon crystal |
| CN103630999A (en) * | 2013-11-06 | 2014-03-12 | 江苏大学 | NC-PC (Negative Refraction Photonic Crystal) double-panel lens system capable of increasing refocusing resolution ratio |
Non-Patent Citations (1)
| Title |
|---|
| 《Image resolution and the properties of optical-wave target detection and imaging by using the NR-PC flat lens》;Tinggen Shen.etc;《Optik》;20111231;第122卷;第643-646页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104570282A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Driscoll et al. | Free-space microwave focusing by a negative-index gradient lens | |
| CN105241857B (en) | A kind of super-resolution imaging system | |
| CN104092494B (en) | It is a kind of that high-precision optical is phased catches with system | |
| Rui et al. | Demonstration of beam steering via dipole-coupled plasmonic spiral antenna | |
| WO2003088419A1 (en) | Photonic crystal exhibiting negative refraction without requiring a negative effective index | |
| CN1427960A (en) | Optical device | |
| CN104022363A (en) | Frequency-control wave beam/focal point scanning plane reflective array/reflector | |
| CN103487421A (en) | Super-resolution microscopic method and device of time-gated wide-field stimulated emission | |
| CN104568984B (en) | The bad measure device of picture on surface of transparency carrier | |
| CN108802988A (en) | Super-resolution optical micro imaging system and its adjusting method | |
| CN104570282B (en) | Silver-doped defect negative refraction photonic crystal three-flat plate group detection system | |
| CN114280707A (en) | Full-polarization medium super-structured lens and use method thereof | |
| CN105938207B (en) | Sub-wavelength image device based on 2 D photon crystal negative refraction | |
| Luo et al. | Quasi-optics design of the dual-array ECE imaging system on the EAST Tokamak | |
| CN109143424B (en) | Micro lens array and preparation method thereof | |
| Wong et al. | Advances in imaging beyond the diffraction limit | |
| Zhao et al. | Direct observation of photonic jets and corresponding backscattering enhancement at microwave frequencies | |
| CN109752841A (en) | Fibre optic scanner and projection display apparatus, endoscopic apparatus | |
| CN102253051A (en) | System for detecting defects of solar cell by using line scanning detector | |
| CN105987757A (en) | Terahertz focal plane array and detecting and imaging device | |
| CN103335988B (en) | Line based on post lens focus scanning stimulated emission depletion microscopic imaging device | |
| CN114966982B (en) | Topological optical communication resonant device capable of realizing waveguide-cavity coupling | |
| Chen et al. | An all-dielectric 3D Luneburg lens constructed by common-vertex coaxial circular cones | |
| Zhu et al. | Optics system design of microwave imaging reflectometry for the EAST tokamak | |
| CN103630999A (en) | NC-PC (Negative Refraction Photonic Crystal) double-panel lens system capable of increasing refocusing resolution ratio |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170503 Termination date: 20171209 |