CN206133049U - Column mode conversion lens and because gauss's light mode conversion ware of these lens - Google Patents
Column mode conversion lens and because gauss's light mode conversion ware of these lens Download PDFInfo
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- CN206133049U CN206133049U CN201621053367.0U CN201621053367U CN206133049U CN 206133049 U CN206133049 U CN 206133049U CN 201621053367 U CN201621053367 U CN 201621053367U CN 206133049 U CN206133049 U CN 206133049U
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Abstract
The utility model discloses a column mode conversion lens and because gauss's light mode conversion ware of these lens, including the incident beam, convex lens, column mode conversion mirror has set gradually on the emitting light path of incident beam, and replace lenticular lens right with column mode conversion lens, be equivalent to that the interval is fixed, saved spacing's step, the moving as a whole also can not be influential simultaneously, and whole original papers all are optical element, do not need the power just can use, so can not receive the influence of mains voltage fluctuation etc. All optical element integrate in the lens cone in addition, are difficult for receiving external force to influence, consequently have fine stability.
Description
Technical field
This utility model belongs to optical technical field, and in particular to a kind of cylinder mode convertible lenss and based on the lens
Gauss light mode converter.
Background technology
No matter in classical message area, or in the quantum information field currently developed, light is a kind of weight all the time
The information carrier wanted.In classical information field, people enter row information coding using intensity, frequency, the polarization etc. of light；In quantum letter
Breath field, most commonly enters row information coding using the polarization state of photon.In recent years, another physical quantity of photon ---
Photon trajectory angular momentum more and more receives publicity, and is applied to quantum information field, carries out higher-dimension coding.At present, allusion quotation
The light beam with orbital angular momentum of type is Laguerre Gauss (LG：Laguerre-Gaussian) light beam, it would be desirable to reliable
LG mode light production methods, this has for quantum regulation and control, quantum calculation, quantum communications, checking of fundamental problem of quantum mechanics etc.
Highly important meaning.
LG moulds and HG moulds are mathematically the basic vectors of two sets of Orthogonal Completes.Thus they can mutually launch, or
Say mutually conversion.Physically, HG moulds can mutually dissipate lens and complete with LG moulds by a pair of cylinders.Two lens pillars need to put down
Face is relative, coaxial placement, and requires that the distance between plane is √ 2f (f is the focal length of lens pillar).This lens pillar structure
Into mode converter be that different gouy phase in-migrations are introduced in HG moulds horizontally and vertically by astigmatism to realize between HG
Superposition coefficient adjustment be expansion coefficient so as to realizing HG moulds to the conversion of LG moulds.The relation of HG moulds and LG moulds is before and after conversion：l
=(m-n), p=min { m, n }.Compared to LG moulds, HG moulds can be relatively easy to be produced from laser instrument：Insert in laser cavity
One moveable cross thread-shaped body can just force laser in chamber with high-order HG mode resonances.In fact, this method
The LG mode purities for obtaining are very high, and conversion efficiency is also very high.Loss from transducer putting position error and
Reflected light, this is very high to the requirement for adjusting, so it is desirable that one highly stable Gauss light mode converter of design.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, there is provided a kind of cylinder mode convertible lenss and based on the lens
Gauss light mode converter, apparatus structure is enormously simplify, while making operation relatively easy and having preferable stability.
In order to achieve the above object, a kind of cylinder mode convertible lenss, including cuboid lens, two of cuboid lens
Two cylindrical faces on end face to be parallel to each other.
The total length of the cuboid lens and two cylindrical faces is L1, and L1=8.48 × n/ (n-1), n are the folding of material
Rate is penetrated, the length of cuboid lens is L2, L2=L1-2.1826.
The radius of the cylindrical face is 12mm, and the width of cuboid lens is 20mm, and the height of cuboid lens is 10mm.
A kind of Gauss light mode converter based on cylinder mode convertible lenss, including incident beam, incident beam goes out
Penetrate in light path and be disposed with convex lenss and cylinder mode conversion mirror.
The incident beam, convex lenss and cylinder mode conversion mirror and coaxial setting.
The convex lenss and cylinder mode conversion mirror are cylinder mode switch main body.
Compared with prior art, cylinder mode convertible lenss of the present utility model have two cylindrical faces being parallel to each other, can
See that the principle of cylinder mode convertible lenss is similar to the lens pillar of a pair of parallel placement, when the oblique 45 ° of sides of a branch of optical field distribution
To HG light inject after lens, light field will have different phase places in the lens pillar in the both direction in vertical transmission direction
Difference.After light beam passes through lens pillar, the phase contrast in two directions can make HG light be converted into LG light just.If incidence is LG light
If, understand that emergent light is HG light in the same manner.
Gauss light mode converter of the present utility model replaces lens pillar pair with a cylinder mode convertible lenss, quite
Fix in spacing, eliminate the step of adjusting spacing, while move integrally there will not be impact, whole original papers are all optics units
Part, it is not necessary to which power supply to use, therefore will not can be affected by mains fluctuations etc.；In addition all of optical element all collects
Into in lens barrel, being difficult to be affected by external force, therefore there is good stability.
Description of the drawings
Fig. 1 is the front view of this utility model cylinder mode convertible lenss；
Fig. 2 is the side view of this utility model cylinder mode convertible lenss；
Fig. 3 is the top view of this utility model cylinder mode convertible lenss；
Fig. 4 is the structural representation of this utility model Gauss light mode converter；
Wherein, 1, incident beam；2nd, convex lenss；3rd, cylinder mode conversion mirror；4th, cylinder mode switch main body；5th, outgoing
Light path；6th, cuboid lens；7th, cylindrical face.
Specific embodiment
This utility model is described further below in conjunction with the accompanying drawings.
Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of cylinder mode convertible lenss include cuboid lens 6, the two of cuboid lens 6
Total length on individual end face for two cylindrical faces 7 being parallel to each other, cuboid lens 6 and two cylindrical faces 7 is L1, L1=8.48
× n/ (n-1), n are the refractive index of material, and the length of cuboid lens 6 is L2, L2=L1-2.1826.
Preferably, the radius of cylindrical face 7 is 12mm, and the width of cuboid lens 4 is 20mm, the height of cuboid lens 6
For 10mm.
Referring to Fig. 4, a kind of Gauss light mode converter based on cylinder mode convertible lenss, including incident beam 1 are incident
Convex lenss 2 and cylinder mode conversion mirror 3, incident beam 1, convex lenss 2 and column are disposed with the emitting light path 5 of light beam 1
The coaxial setting of patten transformation mirror 3, convex lenss 2 and cylinder mode conversion mirror 3 are cylinder mode switch main body 4.
Gauss light mode converter of the present utility model is by cylinder mode convertible lenss, lens barrel, regulation lens, pallet, standard
The original paper composition such as straight accessory.Two modules of lens barrel and adjustable pallet are broadly divided into, beam mode conversion are each responsible for and are adjusted mirror
Cylinder position.As long as adjusting lens barrel position and the lens position before lens barrel when in use just can realize to incident beam mould
The conversion of formula.Because the cylinder mode convertible lenss for having used integration substitute common lens pillar pair, thus greatly simplify
Apparatus structure, while making operation relatively easy and having preferable stability.
The principle very simple of Gauss light mode converter, it is saturating that its core parts is installed in the conversion of the cylinder mode in lens barrel
Mirror.Past is all the plano-convex lens pillar by a pair of parallel arrangement realizing for the patten transformation of Gauss light, if incident
Just Hermitian-Gauss light (HG light) then its two side after inciding on lens pillar, in the region between two lens
Different forms being had upwards, therefore also having different phase places, a phase will be had through latter two direction of lens in light beam
Potential difference, as long as adjust out suitable phase contrast just can be converted into Laguerre-Gauss light (LG light) by HG light, vice versa.And
If using designing a kind of cylinder mode convertible lenss, its two sides is all cylinder, effect equivalent to a pair of plano-convex lens pillars, only
Want the thickness of lens suitable, it is possible to realize being realized for the patten transformation of Gauss light with simple structure.And I is referring to
Independent design has gone out this satisfactory cylinder mode convertible lenss after the document of part.
In order to realize that the patten transformation to light beam needs the waist radius of incident illumination to meet some requirements, it is therefore desirable to
Place a convex lenss before cylinder mode convertible lenss to realize the modulation to incident illumination.And this device also integrates convex lenss
Enter, like this can ensure that convex lenss are coaxial with cylinder mode convertible lenss, so only need to adjust when adjustment
Whole convex lenss and the relative position of cylinder mode convertible lenss, greatly simplifie operation difficulty.
Claims (6)
1. a kind of cylinder mode convertible lenss, it is characterised in that including cuboid lens (6), two ends of cuboid lens (6)
Two cylindrical faces (7) on face to be parallel to each other.
2. a kind of cylinder mode convertible lenss according to claim 1, it is characterised in that the cuboid lens (6) with
The total length of two cylindrical faces (7) be L1, L1=8.48 × n/ (n-1), n for material refractive index, the length of cuboid lens (6)
Spend for L2, L2=L1-2.1826.
3. a kind of cylinder mode convertible lenss according to claim 1, it is characterised in that the radius of the cylindrical face (7)
For 12mm, the width of cuboid lens (6) is 20mm, and the height of cuboid lens (6) is 10mm.
4. a kind of Gauss light mode converter based on cylinder mode convertible lenss described in claim 1, it is characterised in that include
Incident beam (1), is disposed with convex lenss (2) and cylinder mode conversion mirror (3) on the emitting light path (5) of incident beam (1).
5. a kind of Gauss light mode converter based on cylinder mode convertible lenss according to claim 4, its feature exists
In the incident beam (1), convex lenss (2), cylinder mode conversion mirror (3) and cylinder mode switch main body (4) is coaxial sets
Put.
6. a kind of Gauss light mode converter based on cylinder mode convertible lenss according to claim 4, its feature exists
In, convex lenss (2) and cylinder mode conversion mirror (3) be cylinder mode switch main body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621053367.0U CN206133049U (en) | 2016-09-13 | 2016-09-13 | Column mode conversion lens and because gauss's light mode conversion ware of these lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621053367.0U CN206133049U (en) | 2016-09-13 | 2016-09-13 | Column mode conversion lens and because gauss's light mode conversion ware of these lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206133049U true CN206133049U (en) | 2017-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621053367.0U Active CN206133049U (en) | 2016-09-13 | 2016-09-13 | Column mode conversion lens and because gauss's light mode conversion ware of these lens |
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| CN (1) | CN206133049U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526176A (en) * | 2017-09-05 | 2017-12-29 | 上海交通大学 | The method that intracavitary directly produces exponent number adjustable cyclone light beam |
| CN109633920A (en) * | 2019-01-16 | 2019-04-16 | 西安交通大学 | A kind of Hermite-Gauss mode formula beam splitter |
| CN112505935A (en) * | 2020-11-12 | 2021-03-16 | 西安交通大学 | Hermite-Gaussian mode beam splitter based on single polarization modulation device |
-
2016
- 2016-09-13 CN CN201621053367.0U patent/CN206133049U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526176A (en) * | 2017-09-05 | 2017-12-29 | 上海交通大学 | The method that intracavitary directly produces exponent number adjustable cyclone light beam |
| CN109633920A (en) * | 2019-01-16 | 2019-04-16 | 西安交通大学 | A kind of Hermite-Gauss mode formula beam splitter |
| CN109633920B (en) * | 2019-01-16 | 2021-01-29 | 西安交通大学 | Hermite-Gaussian mode beam splitter |
| CN112505935A (en) * | 2020-11-12 | 2021-03-16 | 西安交通大学 | Hermite-Gaussian mode beam splitter based on single polarization modulation device |
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