CN115728847A - Micro-nano lens for generating optical chain and use method thereof - Google Patents
Micro-nano lens for generating optical chain and use method thereof Download PDFInfo
- Publication number
- CN115728847A CN115728847A CN202211463104.7A CN202211463104A CN115728847A CN 115728847 A CN115728847 A CN 115728847A CN 202211463104 A CN202211463104 A CN 202211463104A CN 115728847 A CN115728847 A CN 115728847A
- Authority
- CN
- China
- Prior art keywords
- micro
- optical chain
- nano lens
- generating
- nano
- 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
Images
Abstract
The invention discloses a micro-nano lens for generating an optical chain and a using method thereof, wherein the micro-nano lens is formed by MgF 2 The material and the GaN material are stacked in a staggered manner; along the stacking direction, two surfaces of the micro-nano lens are respectively an incident surface and an emergent surface, the incident surface is a plane, and the emergent surface is an inverted conical concave surface; the micro-nano lens focuses under the irradiation of the column vector light beam to generate an optical chain. The micro-nano lens has a simple structure, and an optical chain is conveniently generated.
Description
Technical Field
The invention belongs to the technical field of optical micro-nano structures, and relates to a micro-nano lens for generating an optical chain and a using method thereof.
Background
The optical chain is often used as optical tweezers, is widely applied to the fields of optical micromanipulation, atom capture, guidance and combination of particles and biological cells and the like, and has very wide application prospect.
At present, various methods can generate an optical chain, for example, an optical bottleneck is realized by focusing a pi phase shift multi-ring hollow gaussian beam by using a lens with spherical phase difference, but the method is relatively complex and not flexible enough; for another example, the method uses an axicon focusing non-diffraction Bessel beam to generate a three-dimensional optical bottle beam, and the method needs 2 conical lenses and is complex in regulating and controlling the light field. The above-mentioned technical methods for generating an optical link are complicated.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a micro-nano lens for generating an optical link and a using method thereof.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
in one aspect, the invention provides a micro-nano lens for generating an optical chain, wherein the micro-nano lens is MgF 2 The material and the GaN material are stacked in a staggered manner; along the stacking direction, two surfaces of the micro-nano lens are respectively an incident surface and an emergent surface, wherein the incident surface is a plane, and the emergent surface is an inverted cone concave surface.
Optionally, the incident surface is a circular plane.
Optionally, the exit surface is in a plurality of annular step shapes.
Optionally, each step includes a bottom surface MgF 2 A material and a top surface GaN material; the height of each step was 150 nm.
Optionally, the bottom surface MgF of each step 2 The thickness of the material was 10 nm.
Optionally, the thickness of the top GaN material of each step is 140 nm.
Optionally, the inner diameter of each layer of annular step is gradually increased by 300 nanometers from bottom to top.
In another aspect, the present invention provides a method for using a micro-nano lens for generating an optical link, including:
and irradiating the cylindrical vector light beam coaxial with the micro-nano lens perpendicular to the incident surface, and focusing to generate an optical chain.
Optionally, the cylindrical vector light beam comprises radially polarized light and rotationally polarized light.
Optionally, the number of focal points in the optical chain is adjusted and controlled by changing the number of the step layers.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a micro-nano lens for generating an optical chain and a using method thereof, the micro-nano lens has a simple structure and is easy to prepare, and the optical chain can be obtained through focusing of incident linearly polarized light beams and rotation polarized light beams;
the number of focal spots in an optical chain can be flexibly regulated and controlled by reasonably changing the number of steps of the micro-nano lens.
Drawings
FIG. 1 is a schematic diagram of a micro-nano lens according to an embodiment of the invention;
FIG. 2 is a partial cross-sectional view of a micro-nano lens according to an embodiment of the invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
fig. 4 is an optical chain distribution diagram of a section of a 35-layer stepped micro-nano lens under radial polarized light irradiation in the embodiment of the present invention;
fig. 5 is an optical link intensity distribution diagram of a 35-layer stepped micro-nano lens along a z-axis under radial polarized light irradiation in the embodiment of the present invention;
fig. 6 is an optical chain distribution diagram of a section of a 35-layer stepped micro-nano lens under irradiation of rotationally polarized light in an embodiment of the present invention;
fig. 7 is an optical chain distribution diagram of a cross section of a 40-layer stepped micro-nano lens under radial polarized light irradiation in the embodiment of the present invention.
Detailed Description
The invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
For the purposes of the present specification and appended claims, unless otherwise indicated, all numbers expressing quantities, percentages or proportions, and other numerical values used in the specification and appended claims, are to be understood as being modified in all instances by the term "about". Moreover, all ranges disclosed herein are inclusive of the endpoints and independently combinable.
Example one
As shown in fig. 1 to 6, a micro-nano lens for generating an optical link is formed by MgF 2 The material and the GaN material are stacked in an interlaced mode, wherein the refractive index of the MgF2 medium is 1.38, and the refractive index of the GaN medium is 2.67; along the upward stacking direction, the bottom surface of the micro-nano lens is an incident surface, the top surface of the micro-nano lens is an emergent surface, the incident surface is a circular plane, the emergent surface is an inverted conical concave surface, the emergent surface is in 35 layers of annular steps, and each layer of steps comprises a bottom surface MgF 2 Materials and top GaN materials, the height of each layer of ladder is 150 nanometers, and the bottom MgF of each layer of ladder 2 The thickness of the material is 10 nanometers, the thickness of the GaN material on the top surface of each layer of ladder is 140 nanometers, and the inner diameter of each layer of annular ladder is gradually increased by 300 nanometers from bottom to top.
Example two
As shown in fig. 1 to 3 and 7, the micro-nano lens for generating the optical chain is formed by MgF 2 The material and the GaN material are stacked in an interlaced mode, wherein the refractive index of the MgF2 medium is 1.38, and the refractive index of the GaN medium is 2.67; along the upward stacking direction, the bottom surface of the micro-nano lens is an incident surface, the top surface of the micro-nano lens is an emergent surface, the incident surface is a circular plane, the emergent surface is an inverted conical concave surface, the emergent surface is in 40 layers of annular steps, and each layer of steps comprises a bottom surface MgF 2 Materials and top GaN materials, the height of each layer of ladder is 150 nanometers, and the bottom MgF of each layer of ladder 2 The thickness of the material is 10 nanometers, the thickness of the GaN material on the top surface of each layer of ladder is 140 nanometers, and the inner diameter of each layer of annular ladder is gradually increased by 300 nanometers from bottom to top.
EXAMPLE III
As shown in fig. 1 to 7, based on a micro-nano lens for generating an optical chain according to a first embodiment, the present embodiment provides a method for using a micro-nano lens for generating an optical chain, including:
and irradiating the cylindrical vector light beam coaxial with the micro-nano lens perpendicular to the incident surface, and focusing to generate an optical chain.
The column vector light beam is radial polarized light or rotation polarized light; and the number of focuses in an optical chain is adjusted and controlled by changing the number of the stepped layers of the micro-nano lens.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A micro-nano lens for generating an optical chain is characterized in that: the micro-nano lens consists of MgF 2 The material and the GaN material are stacked in a staggered manner; along the stacking direction, two surfaces of the micro-nano lens are respectively an incident surface and an emergent surface, the incident surface is a plane, and the emergent surface is an inverted cone concave surface.
2. A micro-nano lens for generating an optical chain according to claim 1, wherein: the incident plane is a circular plane.
3. A micro-nano lens for generating an optical chain according to claim 1, wherein: the emergent surface is in a plurality of layers of annular ladder shapes.
4. A micro-nano lens for generating an optical chain according to claim 3, wherein: each step includes a bottom surface MgF 2 A material and a top surface GaN material; the height of each step was 150 nm.
5. A micro-nano lens for generating an optical chain according to claim 4, wherein: bottom MgF of each step 2 The thickness of the material was 10 nm.
6. A micro-nano lens for generating an optical chain according to claim 4, wherein: the thickness of the top GaN material of each step was 140 nm.
7. A micro-nano lens for generating an optical chain according to claim 3, wherein: the inner diameter of each layer of annular ladder is gradually increased by 300 nanometers from bottom to top.
8. A method for using the micro-nano lens for generating the optical chain according to any one of claims 3 to 7, which is characterized by comprising the following steps:
and irradiating the cylindrical vector light beam coaxial with the micro-nano lens perpendicular to the incident surface, and focusing to generate an optical chain.
9. The method for using the micro-nano lens for generating the optical chain according to claim 8, wherein the method comprises the following steps: the cylindrical vector beam includes radially polarized light and rotationally polarized light.
10. The method for using the micro-nano lens for generating the optical chain according to claim 8, wherein the method comprises the following steps: the number of focuses in the optical chain is adjusted and controlled by changing the number of the step layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211463104.7A CN115728847A (en) | 2022-11-22 | 2022-11-22 | Micro-nano lens for generating optical chain and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211463104.7A CN115728847A (en) | 2022-11-22 | 2022-11-22 | Micro-nano lens for generating optical chain and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115728847A true CN115728847A (en) | 2023-03-03 |
Family
ID=85297503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211463104.7A Pending CN115728847A (en) | 2022-11-22 | 2022-11-22 | Micro-nano lens for generating optical chain and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115728847A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116661134A (en) * | 2023-05-29 | 2023-08-29 | 南京理工大学 | Optical chain generation method for generating focusing hybrid polarization vector light beam based on superlens |
-
2022
- 2022-11-22 CN CN202211463104.7A patent/CN115728847A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116661134A (en) * | 2023-05-29 | 2023-08-29 | 南京理工大学 | Optical chain generation method for generating focusing hybrid polarization vector light beam based on superlens |
| CN116661134B (en) * | 2023-05-29 | 2023-11-21 | 南京理工大学 | Optical chain generation method for generating focusing hybrid polarization vector light beam based on superlens |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5520819B2 (en) | Material processing method using laser irradiation and apparatus for performing the same | |
| US9285593B1 (en) | Method and apparatus for shaping focused laser beams | |
| JP6619107B2 (en) | Beam forming lens system for laser cutting and apparatus comprising the same | |
| JPH11258544A (en) | Light intensity transducing element, optical device, and optical disk device | |
| CN115728847A (en) | Micro-nano lens for generating optical chain and use method thereof | |
| CN106526872B (en) | Transmission-type laser beam shaping system | |
| CN203365805U (en) | Optical system for generating local area bottle beam with adjustable dimension | |
| CN108845409B (en) | Device and method for generating array multiple focuses based on polyhedral prism | |
| CN100547440C (en) | A kind of three-dimensional ultra-discrimination diffraction optical device and method for designing thereof that is used for the two-photon microfabrication | |
| US9606419B2 (en) | Adaptive photothermal lens | |
| CN105116474A (en) | Long-focal-depth and deep-sub-wavelength-focused one-dimensional photonic crystal flat cone mirror for column vector beams | |
| TWI454331B (en) | Variable depth of field optical system and modulating method and optical method for process material | |
| CN102230985B (en) | Circular Damman grating for objective lens having high numerical aperture | |
| CN106772727B (en) | A kind of column vector beam dielectric grating Diode laser condenser lens | |
| CN104849779B (en) | It is a kind of to produce the optical element of long range Bessel light beams | |
| CN110426831A (en) | A kind of focus illumination system and method | |
| CN108897075B (en) | Sub-wavelength imaging device based on silicon ball and photonic crystal negative refraction effect | |
| Sun et al. | Theoretical research on the novel adaptive optics configuration based on the tubular deformable mirror for the aberration correction of the annular laser beam | |
| CN110753596B (en) | Device and method for laser-based separation of transparent and fragile workpieces | |
| CN208013545U (en) | One kind cutting optical system based on four wedge laser scannings of rotation | |
| CN109613708A (en) | A kind of hollow four trap system of local based on dual beam configuration | |
| CN1186674C (en) | Position phase type ultra-high-difinition long focal iris | |
| CN207965372U (en) | One kind being continuously adjusted focus on light beam angle of divergence optical system based on axicon lens | |
| CN207396882U (en) | A kind of lens group for being used to generate depth of focus | |
| JP2007101844A (en) | Diffraction type beam homogenizer |
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 |