CN107193073A - A kind of delustring depolarizer based on nanostructured - Google Patents
A kind of delustring depolarizer based on nanostructured Download PDFInfo
- Publication number
- CN107193073A CN107193073A CN201710336999.0A CN201710336999A CN107193073A CN 107193073 A CN107193073 A CN 107193073A CN 201710336999 A CN201710336999 A CN 201710336999A CN 107193073 A CN107193073 A CN 107193073A
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- Prior art keywords
- particle
- nanostructured
- noble metal
- delustring
- metal nano
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/003—Light absorbing elements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The nanostructured that delustring is depolarized can be carried out to bias light the invention discloses a kind of, belongs to field of nanometer technology.The structure is the linear array each other of one or more pairs of particles, and the enhancing produced by being coupled using the surface plasma body resonant vibration of two noble metal nano particles is absorbed and to the dependence of incident light polarization state, reduces the intensity of incident light and it is depolarized.The invention has the advantages that the nanostructured can be used for the interference for suppressing bias light in optical interference circuit.
Description
Technical field
The invention belongs to field of nanometer technology, it is related to effect of the nanostructured to light, being related specifically to can be simultaneously to light
Produce a kind of nanostructured that enhancing absorbs and depolarized.
Background technology
After light meets with material, its wavefront changes, and is embodied in the direction of vibration of amplitude, phase and its electric field intensity
(i.e. polarization state).By measuring these parameters, the pattern or optical property parameter of test substance can be measured.In order to obtain
The road signal and reference path, are concerned with, so as to obtain operational factors by high sensitivity and resolution ratio using the method for interference.
But it is due to the imperfection of optics self performance, the interference light of background can be introduced to the reduction that measurement causes signal to noise ratio, the back of the body
The interference of scape light is a common problem in interferometry optics.In order to reduce the influence, the present invention provides one kind and is based on receiving
The delustring depolarizer of rice structure, (changes original by absorbing the energy of reduction bias light and transmitted light being depolarized
Polarization state), reduce itself and with reference to the interference of light generation.
The content of the invention
The present invention is coupled for incident light polarization direction using the surface plasma resonance between two noble metal nano particles
Dependence can carry out the nanostructured that light intensity attenuation and polarization state change simultaneously there is provided a kind of, be easy to real based on the structure
The miniaturization of existing device.
Technical scheme：
A kind of delustring depolarizer based on nanostructured, is connected by one or more pairs of noble metal nano particles along its axis
Run in and be classified as linear structure composition, incident light produces enhancing on the polarization direction parallel to the axis of linear structure and absorbs and go
Polarization；Described linear structure is to the intensity proportional that depolarizes of scattered light in Ksin (2 θ), and K is by surface plasma body resonant vibration coupling
The scattering enhancing rate produced is closed, θ is the polarization direction of incident light and the angle of particle pair.
Described noble metal nano particles should comply with following characteristics to A：(1) it is made up of two noble metal nano particles,
The particle diameter of two noble metal nano particles is identical or different；The spacing B of (2) two noble metal nano particles and noble metal nano grain
The ratio in footpath is less than 1；When the particle diameter of two noble metal nano particles is different, using big noble metal nano particles particle diameter；(3) institute
The noble metal nano particles stated are the solid particle of noble metal with surface plasmon resonance effect or noble metal shell parcel
Particle.
Repeat particle and multiple particles are generated to A to A；Two pairs or multipair A connections are arranged as linear structure, two adjacent particles
To spacing be equal to B or the particle diameter more than maximum particle.
Described linear structure expands to the arranged in parallel of multiple linear structures by a linear structure, and two adjacent
The most short particle distance between the parallel construction in same linear structure is not less than the particle diameter of maximum particle.
The wavelength of described incident light is the surface plasma body resonant vibration wavelength of the nanostructured.
The delustring depolarizer of the present invention is the linear array each other of one or more pairs of particles, utilizes two noble metal nanos
Enhancing produced by the surface plasma body resonant vibration coupling of particle absorbs and to the dependence of incident light polarization state, and reduction is incident
The intensity of light is simultaneously depolarized to it.Described nanostructured can be used for the interference for suppressing bias light in optical interference circuit.
Brief description of the drawings
Fig. 1 a are schematic diagram of the particle to A, and the spacing of two particles is B.
Fig. 1 b are that multiple particles are connected to each other the schematic diagram of arrangement to A.
Fig. 2 is the particle pair that two solid gold particles that particle diameter is 60nm, centre distance is 65nm are constituted, and it is relative to list
The normalized absorption cross-section and scattering section of individual particle are with the distribution of incident wavelength, and incident light and particle divide the angle of axis
Wei not be 0 °, 30 °, 60 °, 90 °.
Embodiment
Below in conjunction with accompanying drawing and technical scheme, the embodiment of the present invention is further illustrated.
Embodiment
A kind of delustring depolarizer based on nanostructured, it is characterised in that by one or more pairs of noble metal nano particles
Linear structure is arranged as along the connection of its axis, incident light produces enhancing on the polarization direction parallel to the axis of linear structure
Absorb and depolarize；Described linear structure is to the intensity proportional that depolarizes of scattered light in Ksin (2 θ), and K is by surface plasma
The scattering enhancing rate that resonance body coupling is produced, θ is the polarization direction of incident light and the angle of particle pair.
A kind of a kind of delustring depolarizer based on nanostructured as described above described above, it is characterized in that your gold
Belong to nano-particle to being made up of two particles, the particle diameter of two particles of particle centering is 60nm solid golden nanometer particle, grain
Sub- spacing is 5nm；Particle is repeated to generating multiple particles pair；Two pairs or multipair can connect are arranged as linear structure, two phases
The spacing of neighbour pair is equal to 5nm or the diameter more than maximum particle；The structure expands to multiple lines by a linear structure
Property structure it is arranged in parallel, and between two adjacent parallel constructions not on the same line most short particle distance be more than maximum
The diameter of particle.
A kind of delustring depolarizer based on nanostructured, the wavelength of incident light is the surface plasma of the nanostructured
Resonant wavelength 532nm；As shown in Figure 2, the photoextinction of the structure includes absorbing and scattered, relative to single particle, grain
Son is to the polarization state to incident light parallel to particle to the absorption intensity enhancing on axis to 4；Relative to single particle, particle pair
The polarization state of incident light strengthens to 12 times the scattering on axis parallel to particle；The structure is depolarizing intensity just to scattered light
Than in coupling the scattering enhancing rate produced by surface plasma body resonant vibration, and sin (2 θ), θ are particle to axis and incident line
Polarised light angle.
Claims (6)
1. a kind of delustring depolarizer based on nanostructured, it is characterised in that the delustring depolarizer is by one or more pairs of expensive
Metal nanoparticle is arranged as linear structure composition along the connection of its axis, and incident light is inclined the axis parallel to linear structure
Shake and enhancing is produced on direction absorb and depolarize；Described linear structure is to the intensity proportional that depolarizes of scattered light in Ksin (2
θ), K is to couple the scattering enhancing rate produced by surface plasma body resonant vibration, and θ is the polarization direction of incident light and the folder of particle pair
Angle.
2. a kind of delustring depolarizer based on nanostructured according to claim 1, it is characterised in that your described gold
Category nano-particle should comply with following characteristics to A：(1) it is made up of two noble metal nano particles, two noble metal nano particles
Particle diameter it is identical or different；The spacing B of (2) two noble metal nano particles is less than 1 with the ratio of noble metal nano particle diameter；Two
When the particle diameter of noble metal nano particles is different, using big noble metal nano particles particle diameter；(3) noble metal nano particles described in
The particle wrapped up for the solid particle of noble metal with surface plasmon resonance effect or noble metal shell.
3. a kind of delustring depolarizer based on nanostructured according to claim 2, it is characterised in that repeat particle pair
A generates multiple particles to A；Two pairs or multipair A connections are arranged as linear structure, and the spacing of two adjacent particles pair is equal to B or big
In the particle diameter of maximum particle.
4. a kind of delustring depolarizer based on nanostructured according to claim 1 or 3, it is characterised in that described
Linear structure expands to the arranged in parallel of multiple linear structures by a linear structure, and two adjacent not in same linear junction
Particle diameter of the most short particle distance not less than maximum particle between parallel construction on structure.
5. according to a kind of any described delustring depolarizers based on nanostructured of claim 1-3, it is characterised in that described
Incident light wavelength be the nanostructured surface plasma body resonant vibration wavelength.
6. a kind of delustring depolarizer based on nanostructured according to claim 4, it is characterised in that described incidence
The wavelength of light is the surface plasma body resonant vibration wavelength of the nanostructured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710336999.0A CN107193073B (en) | 2017-05-17 | 2017-05-17 | A kind of delustring depolarizer based on nanostructure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710336999.0A CN107193073B (en) | 2017-05-17 | 2017-05-17 | A kind of delustring depolarizer based on nanostructure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107193073A true CN107193073A (en) | 2017-09-22 |
| CN107193073B CN107193073B (en) | 2019-11-19 |
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| CN201710336999.0A Expired - Fee Related CN107193073B (en) | 2017-05-17 | 2017-05-17 | A kind of delustring depolarizer based on nanostructure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101942A (en) * | 2017-05-17 | 2017-08-29 | 大连理工大学 | A kind of probe for being used to polarize micro-imaging based on bimetal nano particles |
| CN109358037A (en) * | 2018-10-23 | 2019-02-19 | 大连理工大学 | The isomery double nano grain structure and its application insensitive to excitation polarization state |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150247803A1 (en) * | 2014-02-28 | 2015-09-03 | The Government Of The United States Of America, As Represented By The Secretary Of The Navy | Tunable Resonances from Conductively Coupled Plasmonic Nanorods |
-
2017
- 2017-05-17 CN CN201710336999.0A patent/CN107193073B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150247803A1 (en) * | 2014-02-28 | 2015-09-03 | The Government Of The United States Of America, As Represented By The Secretary Of The Navy | Tunable Resonances from Conductively Coupled Plasmonic Nanorods |
Non-Patent Citations (8)
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101942A (en) * | 2017-05-17 | 2017-08-29 | 大连理工大学 | A kind of probe for being used to polarize micro-imaging based on bimetal nano particles |
| CN107101942B (en) * | 2017-05-17 | 2019-04-23 | 大连理工大学 | A kind of probe being used to polarize micro-imaging based on bimetal nano particles |
| CN109358037A (en) * | 2018-10-23 | 2019-02-19 | 大连理工大学 | The isomery double nano grain structure and its application insensitive to excitation polarization state |
| CN109358037B (en) * | 2018-10-23 | 2020-12-11 | 大连理工大学 | Heterogeneous double-nanoparticle structure insensitive to polarization state of excitation light and application thereof |
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| Publication number | Publication date |
|---|---|
| CN107193073B (en) | 2019-11-19 |
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Granted publication date: 20191119 |