CN102566055A - Phase plate multi-focus generation apparatus and generation method thereof - Google Patents
Phase plate multi-focus generation apparatus and generation method thereof Download PDFInfo
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- CN102566055A CN102566055A CN2012100302962A CN201210030296A CN102566055A CN 102566055 A CN102566055 A CN 102566055A CN 2012100302962 A CN2012100302962 A CN 2012100302962A CN 201210030296 A CN201210030296 A CN 201210030296A CN 102566055 A CN102566055 A CN 102566055A
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Abstract
The invention reveals a phase plate multi-focus generation apparatus and a generation method thereof. The apparatus comprises a light source, a light beam diameter regulator, a polarizer, a focus modulation phase plate, an optical focusing part and a photoelectric detection part. The light beam diameter regulator, the polarizer, the focus modulation phase plate, the optical focusing part and the photoelectric detection part are successively arranged at an light beam emitting direction of the light source. Besides, phases on the focus modulation phase plate are arranged in a mode of alternative arrangement of 0 phases and pi phases as well as are symmetrical rotatedly. According to the phase plate multi-focus generation apparatus and a generation method thereof, it is convenient to carry out wavefront regulation and control on a light beam; the light energy utilization rate is high; cost is low; the structure is simple and stable; and the requirement on mechanical positioning is low.
Description
Technical field
The invention belongs to the applied optics technical field, relate to a kind of many focuses generation device, relate in particular to a kind of many focuses of phase-plate generation device; Simultaneously, the invention still further relates to a kind of many focuses of phase-plate production method.
Background technology
Existing many focuses production method is mostly through adopting element such as microlens array, beam splitter or diffraction optical element or method to generate many focuses light beam.
Wherein, when adopting the microlens array method to produce many focuses light beam,,, cause this method to have the not high shortcoming of the efficiency of light energy utilization again because of the unevenness of Gaussian beam because of incident light generally adopts Gaussian beam; And beam splitter configuration is complicated, volume is bigger, and degree of regulation requires high, and is difficult in the use; Diffraction optical element must mate with design wavelength when using, and can not be used for different wave length, and cost is too high.
Summary of the invention
Technical matters to be solved by this invention is: a kind of many focuses of phase-plate generation device is provided, convenient to Beam Wave-Front regulation and control, utilization ratio of optical energy is high, with low cost.
In addition, the invention still further relates to a kind of many focuses of phase-plate production method, convenient to Beam Wave-Front regulation and control, utilization ratio of optical energy is high, with low cost.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of many focuses of phase-plate generation device, said device comprises: light source, beam diameter regulator, the polarizer, focal spot modulation phase-plate, optical focus parts and photoelectric detecting parts;
Be equipped with beam diameter regulator, the polarizer, focal spot modulation phase-plate, optical focus parts and photoelectric detecting parts on the light source outgoing beam direction successively;
Phase place on the said focal spot modulation phase-plate is arranged and is by 0 phase place and π phase alternation and rotates symmetry.
As a kind of preferred version of the present invention, the logarithm that 0 phase place and π phase alternation are arranged on the described phase-plate is adjustable.
As a kind of preferred version of the present invention, described beam diameter regulator is the adjustable beam expander optics of beam expander multiplying power.
As a kind of preferred version of the present invention, described beam diameter regulator is a beam expanding lens.
As a kind of preferred version of the present invention, described focal spot modulation phase-plate is programmable phase type spatial light modulator or liquid crystal optics phase control device able to programme or ray machine electricity integrated phase control device.
A kind of production method of above-mentioned many focuses of phase-plate generation device, said method comprises:
The light source outgoing beam is through the beam diameter regulator, and the beam diameter regulator expands bundle to light beam, and the laser beam that expands after restrainting is carried out Polarization Modulation by the polarizer to it;
Behind the laser beam process focal spot modulation phase-plate that modulation obtains, focus on by the optical focus parts, and focus on the result by photoelectric detecting parts detection demonstration;
The focal spot modulation phase-plate is regulated the Wave-front phase distribution of the laser beam of incident, has formed a plurality of focuses at focus area; Wherein, 0 phase place that is arranged alternately on the focal spot modulation phase-plate and the logarithm of π phase place are adjustable flexibly, and when this logarithm was positive integer m, the focus number that then finally obtains was 2m.
Beneficial effect of the present invention is: many focuses of phase-plate generation device and method that the present invention proposes, convenient to the Beam Wave-Front regulation and control, utilization ratio of optical energy is high, with low cost, simple and stable structure requires low to mechanical positioning.
Description of drawings
Fig. 1 is an embodiment of the invention synoptic diagram.
Fig. 2 is the focal spot modulation phase-plate synoptic diagram of the embodiment of the invention.
Fig. 3 is the focus synoptic diagram of the generation of the embodiment of the invention.
Embodiment
Specify the preferred embodiments of the present invention below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 1, Fig. 1 is an embodiment of the invention synoptic diagram.A kind of many focuses of phase-plate generation device, this device is made up of light source 1, beam diameter regulator 2, the polarizer 3, focal spot modulation phase-plate 4, optical focus parts 5 and photoelectric detecting parts 6; Be equipped with beam diameter regulator 2, the polarizer 3, focal spot modulation phase-plate 4, optical focus parts 5 and photoelectric detecting parts 6 successively on the light source 1 outgoing beam direction; Phase place on the focal spot modulation phase-plate 4 is arranged by 0 phase place and π phase alternation and is the rotation symmetry, and the logarithm of 0 phase place and π phase place is 4 pairs.Fig. 2 is the focal spot modulation phase-plate synoptic diagram of the embodiment of the invention.
Light source 1 adopts the He-Ni laser instrument, and wavelength is 632.8nm, and beam diameter regulator 2 adopts Galileo type beam expanding lens (can certainly be Cape Town type beam expanding lens), and optical focus parts 5 are Nikon flat field apochromatic objective.
A kind of many focuses of phase-plate generation device of the present invention is structure as stated; The course of work is that light source 1 outgoing beam is through beam diameter regulator 2; 2 pairs of light beams of beam diameter regulator expand bundle, expand the laser beam of postoperative and by the polarizer 3 it are carried out Polarization Modulation, behind the laser beam process focal spot modulation phase-plate 4 that modulation obtains; Focus on by optical focus parts 5, and survey demonstration focusing result by photoelectric detecting parts 6; The Wave-front phase of the laser beam of 4 pairs of incidents of focal spot modulation phase-plate distributes and regulates, and has formed a plurality of focuses at focus area.Wherein, 0 phase place that is arranged alternately on the focal spot modulation phase-plate and the logarithm of π phase place are adjustable flexibly, and when this logarithm was 4 pairs, the focus number that then finally obtains was 8.Fig. 3 is the focus synoptic diagram of the generation of the embodiment of the invention.
In sum, many focuses of phase-plate generation device that the present invention proposes, convenient to the Beam Wave-Front regulation and control, utilization ratio of optical energy is high, with low cost, simple and stable structure requires low to mechanical positioning.
Here description of the invention and application is illustrative, is not to want with scope restriction of the present invention in the above-described embodiments.Here the distortion of the embodiment that is disclosed and change are possible, and the replacement of embodiment is known with the various parts of equivalence for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present invention or essential characteristic, and the present invention can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the scope of the invention and spirit, can carry out other distortion and change here to the embodiment that is disclosed.
Claims (6)
1. many focuses of phase-plate generation device is characterized in that said device comprises: light source, beam diameter regulator, the polarizer, focal spot modulation phase-plate, optical focus parts and photoelectric detecting parts;
Be equipped with beam diameter regulator, the polarizer, focal spot modulation phase-plate, optical focus parts and photoelectric detecting parts on the light source outgoing beam direction successively;
Phase place on the said focal spot modulation phase-plate is arranged and is by 0 phase place and π phase alternation and rotates symmetry.
2. many focuses of phase-plate generation device according to claim 1 is characterized in that:
The logarithm that 0 phase place and π phase alternation are arranged on the described phase-plate is adjustable.
3. many focuses of phase-plate generation device according to claim 1 is characterized in that:
Described beam diameter regulator is the adjustable beam expander optics of beam expander multiplying power.
4. many focuses of phase-plate generation device according to claim 1 is characterized in that:
Described beam diameter regulator is a beam expanding lens.
5. many focuses of phase-plate generation device according to claim 1 is characterized in that:
Described focal spot modulation phase-plate is programmable phase type spatial light modulator or liquid crystal optics phase control device able to programme or ray machine electricity integrated phase control device.
6. the production method of many focuses of the said phase-plate of claim 1 generation device is characterized in that said method comprises:
The light source outgoing beam is through the beam diameter regulator, and the beam diameter regulator expands bundle to light beam, and the laser beam that expands after restrainting is carried out Polarization Modulation by the polarizer to it;
Behind the laser beam process focal spot modulation phase-plate that modulation obtains, focus on by the optical focus parts, and focus on the result by photoelectric detecting parts detection demonstration;
The focal spot modulation phase-plate is regulated the Wave-front phase distribution of the laser beam of incident, has formed a plurality of focuses at focus area; Wherein, 0 phase place that is arranged alternately on the focal spot modulation phase-plate and the logarithm of π phase place are adjustable flexibly, and when this logarithm was positive integer m, the focus number that then finally obtains was 2m.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235413A (en) * | 2013-05-21 | 2013-08-07 | 上海理工大学 | Method of controlling focal point position through phase plate |
| CN103424879A (en) * | 2013-06-07 | 2013-12-04 | 上海理工大学 | Focusing optical system based on single object lens |
| CN105182556A (en) * | 2015-09-02 | 2015-12-23 | 鲁东大学 | Multi-focus array light spot generation device and method |
| CN105425401A (en) * | 2015-12-24 | 2016-03-23 | 鲁东大学 | Transverse multi-focus generation device and method |
| CN108535931A (en) * | 2018-03-30 | 2018-09-14 | 西北工业大学 | Liquid crystal phase-plate, preparation method and Airy vortex vector light generate test system |
| CN113126290A (en) * | 2021-04-27 | 2021-07-16 | 西北大学 | Phase modulation method for generating controllable multi-focus array |
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| EP0825471A2 (en) * | 1996-08-19 | 1998-02-25 | Fuji Photo Film Co., Ltd. | Beam diameter control method and device |
| JP2008287002A (en) * | 2007-05-17 | 2008-11-27 | Mitsubishi Electric Corp | Laser beam intensity pattern-forming device |
| CN101477255A (en) * | 2009-01-19 | 2009-07-08 | 杭州电子科技大学 | Multi-parameter regulation light beam focusing device |
| CN201518072U (en) * | 2009-10-21 | 2010-06-30 | 中国计量学院 | Multi-focus regulating and controlling system |
| CN102122080A (en) * | 2011-03-23 | 2011-07-13 | 浙江大学 | Method and device for generating restriction facula in STED (Stimulated Emission Depletion) microscopy |
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2012
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0825471A2 (en) * | 1996-08-19 | 1998-02-25 | Fuji Photo Film Co., Ltd. | Beam diameter control method and device |
| JP2008287002A (en) * | 2007-05-17 | 2008-11-27 | Mitsubishi Electric Corp | Laser beam intensity pattern-forming device |
| CN101477255A (en) * | 2009-01-19 | 2009-07-08 | 杭州电子科技大学 | Multi-parameter regulation light beam focusing device |
| CN201518072U (en) * | 2009-10-21 | 2010-06-30 | 中国计量学院 | Multi-focus regulating and controlling system |
| CN102122080A (en) * | 2011-03-23 | 2011-07-13 | 浙江大学 | Method and device for generating restriction facula in STED (Stimulated Emission Depletion) microscopy |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235413A (en) * | 2013-05-21 | 2013-08-07 | 上海理工大学 | Method of controlling focal point position through phase plate |
| CN103235413B (en) * | 2013-05-21 | 2015-05-20 | 上海理工大学 | Method of controlling focal point position through phase plate |
| CN103424879A (en) * | 2013-06-07 | 2013-12-04 | 上海理工大学 | Focusing optical system based on single object lens |
| CN103424879B (en) * | 2013-06-07 | 2015-09-16 | 上海理工大学 | Based on the Focused Optical system of single object lens |
| CN105182556A (en) * | 2015-09-02 | 2015-12-23 | 鲁东大学 | Multi-focus array light spot generation device and method |
| CN105182556B (en) * | 2015-09-02 | 2017-09-05 | 鲁东大学 | The generating means and method of a kind of multifocal lattice array hot spot |
| CN105425401A (en) * | 2015-12-24 | 2016-03-23 | 鲁东大学 | Transverse multi-focus generation device and method |
| CN108535931A (en) * | 2018-03-30 | 2018-09-14 | 西北工业大学 | Liquid crystal phase-plate, preparation method and Airy vortex vector light generate test system |
| CN113126290A (en) * | 2021-04-27 | 2021-07-16 | 西北大学 | Phase modulation method for generating controllable multi-focus array |
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Application publication date: 20120711 |