CN1588169A - Tunable vector light beam shaping system - Google Patents
Tunable vector light beam shaping system Download PDFInfo
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- CN1588169A CN1588169A CN 200410052913 CN200410052913A CN1588169A CN 1588169 A CN1588169 A CN 1588169A CN 200410052913 CN200410052913 CN 200410052913 CN 200410052913 A CN200410052913 A CN 200410052913A CN 1588169 A CN1588169 A CN 1588169A
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- reflecting surface
- wave plate
- spectroscope
- reflection device
- external reflection
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Abstract
The invention is an adjustable beam shaping system, its structure is: a spectroscope and a reflecting mirror are arranged on a light shaft, the spectroscope has an angle of 45 degrees with the optical axis, there has a 1/2 wave plate on the output light path of the spectroscope, the reflecting surface of the reflecting mirror is vertical to the optical axis, the 1/2 wave plate is vertical to the transmission direction of the output light, the reflecting surface of the modulating reflection mirror is made up of the compound reflecting surface of the internal reflector and the external reflector, the internal reflector and the external reflector are connected together movably. The internal reflector is connected to the inner rotating position controller through link; the external reflector is connected to the outer rotation position controller through link. The invention can adjust the polarization distribution; it also can adjust the phase of beam.
Description
Technical field:
The present invention relates to beam shaping, particularly a kind of adjustable vector beam orthopedic systems.Be mainly used in optical storage system, microscopic system, lithography, fields such as phase shifts, Laser Processing, light forceps technique, super-resolution tolerance.
Technical background:
The beam shaping technology has very important effect in many optical systems, for example optical storage system, microscopic system, lithography, fields such as phase shifts, Laser Processing, light forceps technique.The beam shaping here is a broad sense, comprises the phase place and the polarization state of regulating light beam.In recent years, be that the light beam of cylindrosymmetry has some unique character for polarization state, caused people's great interest.These so-called cylinder vector beams can obtain by active and passive method.The cylinder vector beam of updating currently form can utilize the liquid crystal cells of spatial variations to be formed by the incident light modulation.Also can utilize two 1/2nd wave plates the light beam of the radially cylindrosymmetric or arc mistake direction of incident to be converted into the cylinder vector beam of general type, consult Q.Zhan and J.R.Leger, " Focus shaping using cylindrical vector beams; " Optics Express, 10,2002, p324-330.Although this kind method has certain advantage, still come with some shortcomings:
1) this kind beam shaping system can only regulate the polarisation distribution of light beam, can not regulate the phase place of light beam;
2) owing to be to rely on the angle of regulating two 1/2nd wave plates to realize beam shaping, degree of freedom is few;
3) can not on beam cross section, realize the subregion adjusting.
Summary of the invention
The problem to be solved in the present invention has been to overcome the deficiency of above-mentioned technology formerly, and a kind of adjustable vector beam orthopedic systems is provided, and it can regulate the polarization of incident light attitude, again the scalable phase place; And have the advantages that beam cross section can subregion be regulated.
Basic design of the present invention is:
A kind of adjustable vector beam orthopedic systems utilizes spectroscope, modulation catoptron and 1/2nd wave plates that adjustable light phase and polarization state are introduced in the light path.The reflecting surface of modulation catoptron is by a plurality of axial transportable reverberator reflectings surface and quarter-wave plate is compound constitutes.Incident light is a vector light, through behind the spectroscope, by the compound reflecting surface reflection, light beam is carried out phase modulation (PM).Reflected light is penetrated through 1/2nd wave plates by the spectroscope reflection again, and the change of the major axis angle of 1/2nd wave plates and quarter-wave plate can be regulated outgoing polarisation of light character.So, change reflection part reflecting surface axial location and rotate composite reflector, can regulate the polarization state and the light phase of outgoing vector beam, reach the beam shaping purpose.
Technical solution of the present invention is as follows:
A kind of adjustable vector beam orthopedic systems, it is characterized in that being equipped with spectroscope and modulation catoptron along an optical axis, this spectroscope and optical axis are at 45, place on this spectroscopical light modulated emitting light path 1/1st wave plate is arranged, the reflecting surface of this modulation catoptron is vertical with optical axis, / 2nd wave plates are vertical with the direction of propagation of this spectroscopical emergent light, the reflecting surface of modulation catoptron is made up of the compound reflecting surface of inner reflector and external reflection device, be flexible connection between this inner reflector and the external reflection device, described compound reflecting surface constitutes by the reflecting surface of the reflecting surface of the interior quarter-wave plate of inner reflector stickup and the outer quarter-wave plate that the external reflection device is pasted is compound, described inner reflector links to each other with inward turning transposition shift controller by connecting rod, and described external reflection device links to each other with the inner rotary displacement controller by connecting rod.
The reflecting surface of described inner reflector is identical with the shape of interior quarter-wave plate, and the reflecting surface of described external reflection device is identical with the shape of outer quarter-wave plate.
Described compound reflecting surface is concentric annulus or concentric straight-flanked ring, or other concentric shape.
Described modulation catoptron is made up of plural reverberator, and each reverberator has and rotates and axially movable mechanism, and the rotation of reverberator and displacement be manual adjustments, or motor driver or the automatic displacement controller of PZT are controlled.
Described 1/2nd wave plates are connected with rotary actuator.
Described adjustable vector beam orthopedic systems in the specific implementation, can link to each other spinner with 1/2nd wave plates.Drive the rotation of 1/2nd wave plates by spinner, realize the adjusting of the polarization state of light beam.
Adjustable vector beam orthopedic systems of the present invention in use, the vector light beam of incident is through spectroscopical transmitted light beam, and the compound reflecting surface of modulated catoptron reflects, and folded light beam is passed through spectroscope again, by secondary reflection, penetrate through 1/2nd wave plates.The axial location of the compound reflecting surface of each reverberator changes the phase place that can regulate emergent light.The rotation compound reflecting surface changes the angle between quarter-wave plate and 1/2nd wave plate major axis, can regulate outgoing polarisation of light character.In native system, inward turning transposition shift controller drives inner reflector by inside connecting rod and rotates and move axially, and can regulate the phase place and the polarization properties of light beam interior zone.The inner rotary displacement controller drives the external reflection device by outside connecting rod and rotates and move axially, and can regulate the phase place and the polarization properties in light beam outer annular zone territory.Realize the beam shaping purpose.
Compare advantage of the present invention with technology formerly:
1) this kind beam shaping system both can regulate the polarisation distribution of light beam, by the phase place that can regulate light beam;
2) adjustable degree of freedom is many, can realize the subregion adjusting on beam cross section;
3) system architecture compactness can join in existing other optical system easily, realizes focus light distribution adjusting.
4) can realize the automatic adjusting of focus light distribution.
Description of drawings
Fig. 1 is a specific embodiment synoptic diagram of the present invention.
Fig. 2 (left side) is the reverberator reflecting surface synoptic diagram in the specific embodiment of the invention,
(right side) be with the reverberator reflecting surface to compound quarter-wave plate synoptic diagram.
Fig. 3 is the available cylinder light beam of a specific embodiment synoptic diagram of the present invention.
Embodiment
See also Fig. 1 earlier, Fig. 1 is a specific embodiment synoptic diagram of the present invention.As seen from the figure, the adjustable vector beam orthopedic systems of the present invention, its formation is to be equipped with spectroscope 1 and modulation catoptron 3 along an optical axis, this spectroscope 1 is at 45 with optical axis, place on the light modulated emitting light path of this spectroscope 1 1/1st wave plate 2 is arranged, the reflecting surface of this modulation catoptron 3 is vertical with optical axis, / 2nd wave plates 2 are with vertical by the direction of propagation of the emergent light of this spectroscope 1, the reflecting surface of modulation catoptron 3 is made up of the compound reflecting surface of inner reflector 302 and external reflection device 301, be flexible connection between this inner reflector 302 and the external reflection device 301, described compound reflecting surface constitutes by the reflecting surface of the reflecting surface of the interior quarter-wave plate 308 of inner reflector 302 stickups and the outer quarter-wave plate 307 that external reflection device 301 is pasted is compound, described inner reflector 302 links to each other with inward turning transposition shift controller 304 by connecting rod 303, and described external reflection device 301 links to each other with inner rotary displacement controller 306 by connecting rod 305.The reflecting surface of described inner reflector 302 is identical with the shape of interior quarter-wave plate 308, and the reflecting surface of described external reflection device 301 is identical with the shape of outer quarter-wave plate 307, as shown in Figure 2.
Described compound reflecting surface is concentric annulus, shown in Fig. 2 left side.Described modulation catoptron also can be made up of plural reverberator, and each reverberator has and rotates and axially movable mechanism, and the rotation of reverberator and displacement be manual adjustments, or motor driver or the automatic displacement controller of PZT are controlled.
Described 1/2nd wave plates 2 are connected with rotary actuator.
Fig. 2 left side is the reverberator reflecting surface synoptic diagram in the specific embodiment of the invention.Compound reflecting surface is made of with interior quarter-wave plate 308 and outer quarter-wave plate 307 are compound respectively the reflecting surface of inner reflector 302 and external reflection device 301.Fig. 2 right side be with the reverberator reflecting surface to compound quarter-wave plate synoptic diagram.System also comprises the inward turning transposition shift controller 304 that links to each other with inner reflector 302 by connecting rod 303, with the inner rotary displacement controller 306 that links to each other with inner reflector 306 by connecting rod 305.
In the present embodiment, selecting wavelength is that the laser of 406nm is as incident beam; Spectroscope 1 adopts Amici prism; Inward turning transposition shift controller 304 adopts electric rotating machine; Inner rotary displacement controller 306 adopts controlled piezoelectric scanner.
Beam shaping process of the present invention is: the vector light beam of incident is through the transmitted light beam of spectroscope 1, and the compound reflecting surface of modulated catoptron 3 reflects, and folded light beam is passed through spectroscope 1 again, by secondary reflection, penetrates through 1/2nd wave plates 3.The axial location of the compound reflecting surface of each reverberator changes the phase place that can regulate emergent light.The rotation compound reflecting surface changes the angle between quarter-wave plate and 1/2nd wave plate major axis, can regulate outgoing polarisation of light character.In native system, inward turning transposition shift controller 304 drives inner reflector 302 by inside connecting rod 303 and rotates and move axially, and can regulate the phase place and the polarization properties of light beam interior zone.Inner rotary displacement controller 306 drives external reflection device 301 by outside connecting rod 305 and rotates and move axially, and can regulate the phase place and the polarization properties in light beam outer annular zone territory.
Utilize the present invention to realize the shaping of light beam, adjustable degree of freedom is many, and is easy to adjust, can realize the subregion adjusting on beam cross section, and can add easily in the existing optical system (for example in the light path of Laser Processing).The cylinder light beam that Fig. 3 can regulate out for present embodiment.
Claims (5)
1, a kind of adjustable vector beam orthopedic systems, it is characterized in that being equipped with spectroscope (1) and modulation catoptron (3) along an optical axis, this spectroscope (1) is at 45 with optical axis, place on the light modulated emitting light path of this spectroscope (1) 1/1st wave plate (2) is arranged, the reflecting surface of this modulation catoptron (3) is vertical with optical axis, / 2nd wave plates (2) are vertical with the direction of propagation of the emergent light of this spectroscope (1), the reflecting surface of modulation catoptron (3) is made up of the compound reflecting surface of inner reflector (302) and external reflection device (301), be flexible connection between this inner reflector (302) and the external reflection device (301), described compound reflecting surface is by the reflecting surface of the interior quarter-wave plate (308) of inner reflector (302) stickup and the compound formation of reflecting surface of the outer quarter-wave plate (307) that external reflection device (301) is pasted, described inner reflector (302) links to each other with inward turning transposition shift controller (304) by connecting rod (303), and described external reflection device (301) links to each other with inner rotary displacement controller (306) by connecting rod (305).
2, adjustable vector beam orthopedic systems according to claim 1, the reflecting surface that it is characterized in that described inner reflector (302) is identical with the shape of interior quarter-wave plate (308), and the reflecting surface of described external reflection device (301) is identical with the shape of outer quarter-wave plate (307).
3, adjustable vector beam orthopedic systems according to claim 2 is characterized in that described compound reflecting surface is concentric annulus or concentric straight-flanked ring, or other concentric shape.
4, adjustable vector beam orthopedic systems according to claim 1, it is characterized in that described modulation catoptron (3) is made up of plural reverberator, each reverberator has rotation and axially movable mechanism, and the rotation of reverberator and displacement are manual adjustments, or motor driver or the automatic displacement controller control of PZT.
5, adjustable vector beam orthopedic systems according to claim 1 is characterized in that described 1/2nd wave plates (2) are connected with rotary actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052913 CN1256610C (en) | 2004-07-16 | 2004-07-16 | Tunable vector light beam shaping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410052913 CN1256610C (en) | 2004-07-16 | 2004-07-16 | Tunable vector light beam shaping system |
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| CN1588169A true CN1588169A (en) | 2005-03-02 |
| CN1256610C CN1256610C (en) | 2006-05-17 |
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| CN 200410052913 Expired - Fee Related CN1256610C (en) | 2004-07-16 | 2004-07-16 | Tunable vector light beam shaping system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323826A (en) * | 2011-06-21 | 2012-01-18 | 中国科学院上海技术物理研究所 | Automatic basic vector regulation system and automatic basic vector regulation method for quantum communication system |
| CN104777612A (en) * | 2015-04-28 | 2015-07-15 | 中南大学 | Iterative algorithm for performing shaping on amplitude and phase of light beam simultaneously |
| WO2022151522A1 (en) * | 2021-01-14 | 2022-07-21 | 苏州大学 | Light beam optical axis self-stabilizing device and method based on reflection type mechanical modulation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363964B (en) * | 2008-09-18 | 2010-06-16 | 高秀敏 | Adjustable ring vector light beam producing system |
-
2004
- 2004-07-16 CN CN 200410052913 patent/CN1256610C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323826A (en) * | 2011-06-21 | 2012-01-18 | 中国科学院上海技术物理研究所 | Automatic basic vector regulation system and automatic basic vector regulation method for quantum communication system |
| CN102323826B (en) * | 2011-06-21 | 2013-04-17 | 中国科学院上海技术物理研究所 | Automatic basic vector regulation system and automatic basic vector regulation method for quantum communication system |
| CN104777612A (en) * | 2015-04-28 | 2015-07-15 | 中南大学 | Iterative algorithm for performing shaping on amplitude and phase of light beam simultaneously |
| WO2022151522A1 (en) * | 2021-01-14 | 2022-07-21 | 苏州大学 | Light beam optical axis self-stabilizing device and method based on reflection type mechanical modulation |
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| Publication number | Publication date |
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| CN1256610C (en) | 2006-05-17 |
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