CN101382663A - Circulation polarized light beam generating system - Google Patents
Circulation polarized light beam generating system Download PDFInfo
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- CN101382663A CN101382663A CNA200810121572XA CN200810121572A CN101382663A CN 101382663 A CN101382663 A CN 101382663A CN A200810121572X A CNA200810121572X A CN A200810121572XA CN 200810121572 A CN200810121572 A CN 200810121572A CN 101382663 A CN101382663 A CN 101382663A
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- light beam
- catoptron
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Abstract
The invention relates to a rotating vector polarized beam generating system composed of a light source, as well as an external reflection type conical surface reflector, a cylindrical curved surface polarizer, an internal reflection type conical surface reflector, a 1/2 incidence wave plate and a 1/2 exit wave plate, which are sequentially arranged on the same symmetrical optical axis of the exit beam light path of the light source. The exit beam forms a radial transmission beam after being reflected by the external reflection type conical surface reflector and forms a ring-shaped rotating vector polarized beam through the reflection by the internal reflection type conical surface reflector after the beam polarization state is changed by the cylindrical curved surface polarizer. By adjusting the optical axis included angle of the two 1/2 wave plates, the polarization direction of the rotating vector polarized beam can be mediated. The system is characterized by being capable of realizing the conversion from a non-rotating vector polarized beam into a rotating vector polarized beam, having low requirement on incidence beams as well as high system stability and reliability, adjusting the beam polarization state conveniently, being capable of adjusting the lateral dimension of the exit beam, and the like.
Description
Technical field
The present invention is relevant with light beam producing system, particularly a kind of circulation polarized light beam generating system.Be mainly used in fields such as Laser Micro-Machining, the little manipulation of optics, optical information storage, light and matter interaction.
Technical background
Circulation polarized light beam is meant that the light beam transversal polarization state presents the light beam of the rotational symmetry distribution of rotation, owing to have special light beam focussing property and propagation characteristic, circulation polarized light beam has very important effect in many optical systems, can be applied to optical storage system, microscopic system, lithography, phase shifts, Laser Processing, the light forceps technique, fields such as super-resolution, for example, circulation polarized light beam can be applicable to realize the super-resolution effect in the optical microscopy, because certain circulation polarized light beam is littler than the horizontal hot spot of the focus of linearly polarized light beam focusing in the same focusing system through focusing on back focus.The generation system of circulation polarized light beam is research and the indispensable precondition of utilizing circulation polarized light beam, causes extensive concern.
At present, the method for generation rotating vector polarized light has laserresonator inner modulation method and beam interference method.Laserresonator inner modulation method exists the system architecture controlled variable to require height and is merely able to be applied to the deficiency of large scale resonance-cavity laser; There is the system architecture complexity in the beam interference method, regulates deficiencies such as not convenient, that the structure difficulty is big.
In the prior art, there is a kind of adjustable vector beam orthopedic systems can realize the generation of partial rotation vector light beam, record to some extent in Chinese invention patent " adjustable vector beam orthopedic systems ", the patent No. is: ZL200410052913.4.This adjustable vector beam orthopedic systems has suitable advantage, but, still exist some essence not enough, be mainly: 1) if utilize the technology of this patent to produce the circulation polarized light beam of general type, required necessary conditions is that system's incident beam need be the special shape of circulation polarized light beam, such as radial polarized light beam or position angle light beam, yet, the generation of radial polarized light beam and position angle light beam also belongs to circulation polarized light beam and produces category, so, this technological system essence decision can't realize that non-rotating vector light beam is converted into circulation polarized light beam, decision can't realize the conversion process of incoherent incident beam to circulation polarized light beam in essence, incident beam is required height, and incident beam itself is difficult to obtain; 2) formerly depositing a plurality of machineries in the technological system moves with rotary part and has lowered system stability and reliability; 3) can't realize that the outgoing beam light beam transversal relative with incident beam expands Shu Xiaoying, can't adjust irradiating light beam physical dimension, limit range of application.
Summary of the invention
The problem to be solved in the present invention has been to overcome the deficiency of above-mentioned technology formerly, a kind of circulation polarized light beam generating system is provided, have can realize non-rotating vector light beam to conversion, the incident beam of circulation polarized light beam require low, system stability and reliability height, light polarization easy to adjust, can adjust characteristics such as irradiating light beam lateral dimension.
The present invention has adopted following technical scheme for solving the problems of the technologies described above:
A kind of circulation polarized light beam generating system, it is characterized in that: by light source, external reflection formula circular conical surface catoptron, cylinder barrel shaped curved surface polarizer, the reflection type conical reflector, incident 1/2nd wave plates and outgoing 1/2nd wave plates constitute, external reflection formula circular conical surface catoptron, cylinder barrel shaped curved surface polarizer, the reflection type conical reflector, incident 1/2nd wave plates and outgoing 1/2nd wave plates are positioned on the light source outgoing beam light path successively, form the radial propagation light beam after the light source outgoing beam process external reflection formula circular conical surface mirror reflects, the cylinder curved surface of cylinder barrel shaped curved surface polarizer is vertical with the radial propagation light beam, the reflection conical surface of reflection type circular conical surface catoptron is parallel with the reflection conical surface of external reflection formula circular conical surface catoptron, and the reflection conical surface of external reflection formula circular conical surface catoptron and the reflection conical surface of reflection type circular conical surface catoptron all with outgoing beam in angle of 45 degrees, incident 1/2nd wave plates are vertical with outgoing beam with outgoing 1/2nd wave plates.
As preferably, described light source is a kind of in incoherent light source, gas laser, solid state laser, dye laser, free electron laser, the semiconductor laser.
As preferably, described external reflection formula circular conical surface catoptron is a kind of in the external reflection formula circular conical surface catoptron of cone plating reflectance coating, the Conical Shells With curved surface external reflection formula catoptron that reflectance coating constitutes.
As preferably, described reflection type circular conical surface catoptron is a kind of in the reflection type circular conical surface catoptron of cone plating reflectance coating, the Conical Shells With curved surface reflection type catoptron that reflectance coating constitutes.
As preferably, described cylinder barrel shaped curved surface polarizer is a kind of in cylinder barrel shaped polarizing coating, the cylinder curved surface shell-type polarizer.
The course of work of circulation polarized light beam generating system of the present invention is that the light source outgoing beam is propagated along symmetrical optical axis, directive external reflection formula circular conical surface catoptron; After external reflection formula circular conical surface mirror reflects, because the external reflection formula circular conical surface mirror reflects conical surface and symmetrical optical axis are in angle of 45 degrees, light beam is converted into the radial propagation light beam; Light polarization changes behind the radial propagation light beam process cylinder barrel shaped curved surface polarizer, then reflect to form the annular circulation polarized light beam through the reflection type conical reflector, because the reflection conical surface of external reflection formula circular conical surface catoptron is parallel with the reflection conical surface of reflection type circular conical surface catoptron, circulation polarized light beam is parallel with symmetrical optical axis, pass through incident 1/2nd wave plates and outgoing 1/2nd wave plates successively along symmetrical optical axis propagation, by regulating incident 1/2nd wave plates and outgoing 1/2nd wave plate wave plate wave plate optical axis included angles, can regulate the circulation polarized light beam polarization state, regulate external reflection formula circular conical surface catoptron and reflection type conical reflector two reflection cone interplanar distances and can change the outgoing beam lateral dimension.
The present invention has the following advantages or effect: 1, can realize the conversion of non-rotating vector light beam to circulation polarized light beam in essence, system is unrestricted to the polarization state of incident beam, and low for the incident beam requirement, the system applies scope is wide; 2, system architecture is simple, easy-to-use, and non-rotating vector light beam is to the stability and the reliability height of the conversion of circulation polarized light beam; 3, the polarization state of the circulation polarized light beam of Sheng Chenging is easy to adjust; 4, can adjust the irradiating light beam lateral dimension.
Description of drawings
Fig. 1 is the synoptic diagram of the embodiment of the invention.
Fig. 2 is three kinds of circulation polarized light beam polarisation distribution synoptic diagram of the embodiment of the invention.
Embodiment
The present invention is described in further detail below in conjunction with embodiment, and following examples are explanation of the invention, be reasonable application form of the present invention, and the present invention is not limited to following examples.
As shown in Figure 1, circulation polarized light beam generating system, be made of light source 1, external reflection formula circular conical surface catoptron 6, cylinder barrel shaped curved surface polarizer 2, reflection type conical reflector 3, incident 1/2nd wave plates 4 and outgoing 1/2nd wave plates 5, external reflection formula circular conical surface catoptron 6, cylinder barrel shaped curved surface polarizer 2, reflection type conical reflector 3, incident 1/2nd wave plates 4 and outgoing 1/2nd wave plates 5 are with symmetrical optical axis O
1O
2Ground is positioned on the light source outgoing beam light path successively; The radial propagation light beam that light source 1 outgoing beam forms through external reflection formula circular conical surface catoptron 6 reflection backs, the axis of symmetry of cylinder barrel shaped curved surface polarizer 2 and symmetrical optical axis O
1O
2Overlap, and the cylinder curved surface is vertical with the radial propagation light beam; The reflection conical surface of external reflection formula circular conical surface catoptron 3 is parallel with the reflection conical surface of reflection type circular conical surface catoptron 6, and the external reflection formula circular conical surface catoptron 3 reflection conical surfaces and 6 liang of reflection conical surfaces of reflection type circular conical surface catoptron all with symmetrical optical axis O
1O
2In angle of 45 degrees; Incident 1/2nd wave plates 4 and outgoing 1/2nd wave plates 5 and symmetrical optical axis O
1O
2Vertically.
Light source 1 is the helium-neon gas laser of 632.8nm for wavelength in the present embodiment, external reflection formula circular conical surface catoptron 6 is the external reflection formula circular conical surface catoptron of cone plating reflectance coating, reflection type circular conical surface catoptron 3 is the reflection type circular conical surface catoptron of cone plating reflectance coating, cylinder barrel shaped curved surface polarizer 2 adopts the cylinder barrel shaped polarizing coating, and incident 1/2nd wave plates 4 and outgoing 1/2nd wave plates 5 adopt BK7 substrate of glass 1/2nd wave plates of wavelength and helium-neon gas laser 632.8nm coupling.
The course of work of circulation polarized light beam generating system of the present invention is that light source 1 outgoing beam is along symmetrical optical axis O
1O
2Propagate directive external reflection formula circular conical surface catoptron 6; After 6 reflections of external reflection formula circular conical surface catoptron, because the external reflection formula circular conical surface catoptron 6 reflection conical surface and symmetrical optical axis O
1O
2In angle of 45 degrees, light beam is converted into the radial propagation light beam; The radial propagation light beam changes through cylinder barrel shaped curved surface polarizer 2 back light polarizations, then reflect to form the annular circulation polarized light beam through reflection type conical reflector 3, because the reflection conical surface of external reflection formula circular conical surface catoptron 6 is parallel with the reflection conical surface of reflection type circular conical surface catoptron 3, the light beam of reflection type circular conical surface catoptron 3 outgoing and symmetrical optical axis O
1O
2Parallel, along symmetrical optical axis O
1O
2Propagate and pass through incident 1/2nd wave plates 4 and outgoing 1/2nd wave plates 5 successively, by regulating incident 1/2nd wave plates 4 and outgoing 1/2nd wave plates 5 wave plate optical axis included angles, can regulate the circulation polarized light beam polarization state, regulate external reflection formula circular conical surface catoptron 6 and 3 liang of reflection cone interplanar distances of reflection type conical reflector and can change the outgoing beam lateral dimension.
Three kinds of circulation polarized light beam polarisation distribution synoptic diagram that Fig. 2 realizes for the embodiment of the invention, native system is realized the conversion of non-rotating vector light beam to circulation polarized light beam, and incident beam is required advantages such as low, that light polarization is easy to adjust.
Claims (5)
1, a kind of circulation polarized light beam generating system, it is characterized in that: by light source, external reflection formula circular conical surface catoptron, cylinder barrel shaped curved surface polarizer, the reflection type conical reflector, incident 1/2nd wave plates and outgoing 1/2nd wave plates constitute, external reflection formula circular conical surface catoptron, cylinder barrel shaped curved surface polarizer, the reflection type conical reflector, incident 1/2nd wave plates and outgoing 1/2nd wave plates are positioned on the light source outgoing beam light path successively, form the radial propagation light beam after the light source outgoing beam process external reflection formula circular conical surface mirror reflects, the cylinder curved surface of cylinder barrel shaped curved surface polarizer is vertical with the radial propagation light beam, the reflection conical surface of reflection type circular conical surface catoptron is parallel with the reflection conical surface of external reflection formula circular conical surface catoptron, and the reflection conical surface of external reflection formula circular conical surface catoptron and the reflection conical surface of reflection type circular conical surface catoptron all with outgoing beam in angle of 45 degrees, incident 1/2nd wave plates are vertical with outgoing beam with outgoing 1/2nd wave plates.
2, circulation polarized light beam generating system according to claim 1 is characterized in that: described light source is a kind of in incoherent light source, gas laser, solid state laser, dye laser, free electron laser, the semiconductor laser.
3, circulation polarized light beam generating system according to claim 1 is characterized in that: described external reflection formula circular conical surface catoptron is a kind of in the external reflection formula circular conical surface catoptron of cone plating reflectance coating, the Conical Shells With curved surface external reflection formula catoptron that reflectance coating constitutes.
4, circulation polarized light beam generating system according to claim 1 is characterized in that: described reflection type circular conical surface catoptron is a kind of in the reflection type circular conical surface catoptron of cone plating reflectance coating, the Conical Shells With curved surface reflection type catoptron that reflectance coating constitutes.
5, circulation polarized light beam generating system according to claim 1 is characterized in that: described cylinder barrel shaped curved surface polarizer is a kind of in cylinder barrel shaped polarizing coating, the cylinder curved surface shell-type polarizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810121572XA CN101382663A (en) | 2008-10-14 | 2008-10-14 | Circulation polarized light beam generating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810121572XA CN101382663A (en) | 2008-10-14 | 2008-10-14 | Circulation polarized light beam generating system |
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| CN101382663A true CN101382663A (en) | 2009-03-11 |
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| CNA200810121572XA Pending CN101382663A (en) | 2008-10-14 | 2008-10-14 | Circulation polarized light beam generating system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323676A (en) * | 2011-09-14 | 2012-01-18 | 黑龙江大学 | Axial symmetry vector polarized light acquiring methods and devices for realizing methods |
| CN102518959A (en) * | 2011-11-18 | 2012-06-27 | 厦门大学 | Optically annular lighting device |
| WO2013020315A1 (en) * | 2011-08-10 | 2013-02-14 | 浙江大学 | Medium microballoon-based florescence correlation spectrum analysis method and device |
| CN105182457A (en) * | 2015-09-21 | 2015-12-23 | 湖北久之洋红外系统股份有限公司 | Polarization-maintaining type cube-corner prism |
-
2008
- 2008-10-14 CN CNA200810121572XA patent/CN101382663A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013020315A1 (en) * | 2011-08-10 | 2013-02-14 | 浙江大学 | Medium microballoon-based florescence correlation spectrum analysis method and device |
| CN102323676A (en) * | 2011-09-14 | 2012-01-18 | 黑龙江大学 | Axial symmetry vector polarized light acquiring methods and devices for realizing methods |
| CN102518959A (en) * | 2011-11-18 | 2012-06-27 | 厦门大学 | Optically annular lighting device |
| CN105182457A (en) * | 2015-09-21 | 2015-12-23 | 湖北久之洋红外系统股份有限公司 | Polarization-maintaining type cube-corner prism |
| CN105182457B (en) * | 2015-09-21 | 2018-10-23 | 湖北久之洋红外系统股份有限公司 | Polarization-maintaining type prism of corner cube |
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Open date: 20090311 |