CN202018537U - Optical-tweezers device based on wave-front phase modulation - Google Patents
Optical-tweezers device based on wave-front phase modulation Download PDFInfo
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- CN202018537U CN202018537U CN2011201198647U CN201120119864U CN202018537U CN 202018537 U CN202018537 U CN 202018537U CN 2011201198647 U CN2011201198647 U CN 2011201198647U CN 201120119864 U CN201120119864 U CN 201120119864U CN 202018537 U CN202018537 U CN 202018537U
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Abstract
The utility model relates to an optical-tweezers device based on wave-front phase modulation, which belongs to the technical field of applied optics and is mainly applied to the fields of optical micromanipulation, light and substance interaction and the like. The device comprises a light-source emitting part, a beam-diameter regulator, a phase wave-front regulator and an optical focusing part; and the beam-diameter regulator, the phase wave-front regulator and the optical focusing part are sequentially placed in the outgoing-beam direction of the light-source emitting part, and the phase wave-front regulator is an annular phase wave-front regulator with phase topological numbers. The optical-tweezers device has the advantages of realization in optical-tweezers regulation and control, convenience in regulation and control, high light-energy utilization ratio, concise system and the like.
Description
Technical field:
The utility model belongs to the applied optics technical field, and system is relevant with Focused Optical system focus area light intensity regulating, particularly a kind of light forceps device based on the Wave-front phase modulation.Be mainly used in little manipulation of optics and fields such as light and matter interaction.
Background technology:
As far back as the AAshkin of Bell Laboratory in 1970 just utilize the three-dimensional potential well success tweezer of multi-beam laser to rise and mobile aqueous solution in little beaded glass.Afterwards, the technology that this laser tweezer plays particulate is updated, and the particle that can catch is more and more littler, and AAshkin began to adopt the single beam tweezer to play tiny organism bodies such as bacterium and virus in 1985, utilizes the laser success tweezer of 1064 nanometers to play virus in 1987.Thereafter 20 in the period of this technology be widely used and develop, derive lens fiber light tweezer, microlens array light tweezer, hologram array light tweezer etc. and can be applied to the far field optical tweezer technology of some special dimension, and become the research tool in numerous ambits such as biomedicine, chemistry, physics, spectroscopy, microfabrication.In the 21 century that nanometer technology and life science develop rapidly, research and application as the optical tweezer technology of these two field useful tools have obtained development rapidly, particularly at life science, the light tweezer has become research individual cells and the indispensable effective tool of biomacromolecule behavior.In the last few years, the Coherence Mode of two-beam is utilized to constitute regulatable smooth tweezers again, and can rotate captive a plurality of particle (K.Dholakia et al continuously by the difference on the frequency or the optical path difference that change two-beam, " Simultaneous micromanipulation in multipleplanes using a self reconstructing light beam; " Nature 2002,419,145, and " Creation and manipulation of three-dimensionaloptically trapped structures; " Science 2002,296, p1101-1103), have certain advantage although this kind constitutes the technology formerly of light tweezers, still have the following disadvantages:
1) adjustable smooth tweezers need the two-beam source to be concerned with, and form interference pattern and constitute the light tweezers, the apparatus structure complexity, parts are many.
2) in the light tweezers device captive particle by the switch light source or adjust light intensity significantly and realize catching of particle and discharge, control mode very flexible, even influence device serviceable life.
Summary of the invention
The utility model provides the device of the realization light tweezer that a kind of parts are few, utilization ratio of optical energy is high, system is succinct in order to solve above-mentioned prior art problems.
It is a kind of device of realizing the light tweezer that the utility model solves the problems of the technologies described above the technical scheme that is adopted, and is made up of light emitted parts, beam diameter regulator, phase front regulator, optical focus parts; Be equipped with beam diameter regulator, phase front regulator and optical focus parts successively on the light emitted parts outgoing beam direction, be characterized in: described phase front regulator is the annular phase front regulator that has phase place topology number.
The parts that the annular phase front regulator that has phase place topology number described in the utility model is the zone radius variable size.Control phase shape in the shape of a spiral changes, and the relative radius of Wave-front phase regulator and topological number are adjustable.
The annular phase front regulator that has phase place topology number described in the utility model is programmable phase type spatial light modulator, liquid crystal optics phase control device able to programme, ray machine electricity integrated phase control device.
Beam diameter regulator described in the utility model is the adjustable beam expander optics of beam expander multiplying power.
As preferably, the beam expander optics that described beam expander multiplying power is adjustable is Galileo type beam expanding lens or Cape Town type beam expanding lens.
As preferably, described light emitted parts are helium-neon laser.
As preferably, described optical focus parts are Nikon flat field apochromatic objective.
Advantage and beneficial effect that the relative prior art of the utility model has are:
1) only form the light tweezers that can control with a branch of light, apparatus structure is simple, and parts are few.
2) captive particle is realized catching of particle by control phase and discharges that the control mode dirigibility is good in the light tweezers device, the device long service life.
3) implement device is simple in structure, and is easy to operate, realizes robotization easily.
4) be implemented in place, particle position, can regulate easily, constantly form new light tweezers and catch particle, be transported to the destination then.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of the utility model embodiment;
Fig. 2 is the utility model embodiment wave front modifier synoptic diagram;
Fig. 3 is the light tweezer distribution plan of the utility model embodiment;
Fig. 4 is the light tweezer distribution plan of the utility model embodiment
Fig. 5 is the light tweezer distribution plan of the utility model embodiment
Fig. 6 is the light tweezer distribution plan of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, following examples are the reasonable application forms of the utility model, but following examples should not regarded as restriction of the present utility model.
Embodiment
Present embodiment with the lower part a kind of device of realizing the light tweezer has been described:
As shown in Figure 1, the device of realization light tweezer of the present utility model comprises helium-neon laser 1, Cape Town type beam expanding lens 2, programmable phase type spatial light modulator 3 and Nikon flat field apochromatic objective 4 compositions, and Cape Town type beam expanding lens 2, programmable phase type spatial light modulator 3 and Nikon flat field apochromatic objective 4 are successively set on going out on the light path of helium-neon laser 1.
During work, helium-neon laser 1 outgoing coherent light beam is through Cape Town type beam expanding lens 2, type beam expanding lens 2 pairs of light beams in Cape Town expand bundle, expand the laser beam process programmable phase type spatial light modulator 3 after restrainting, as shown in Figure 2, the Wave-front phase of the laser beam of 3 pairs of incidents of programmable phase type spatial light modulator distributes and has carried out the adjusting of spiral fashion phase change, make PHASE DISTRIBUTION present the spiral fashion phase change, after having laser beam process Nikon flat field apochromatic objective 4 focusing of spiral fashion phase front, as Fig. 3--shown in 6, the light tweezer that has formed at focus area.
The phase front regulator is the annular phase front regulator that has phase place topology number, and light beam carries out after Wave-front phase regulates through the phase front regulator, and the wavefront of light beam has topology distribution, for example, selects the phase place topology distribution to be
Wherein i is a unit imaginary number,
Be the deflection coordinate on the beam cross-section, m is a phase place topology number.The annular phase front refers to the Beam Wave-Front phase place also to have simultaneously laterally presenting ring-band shape and distributes having the phase place topology distribution.When use has annular this technological means of phase front regulator of phase place topology number, can pass through programmable phase type spatial light modulator, liquid crystal optics phase control device able to programme and ray machine electricity integrated phase control device are realized, for example, select programmable phase type spatial light modulator, programmable phase type spatial light modulator is the device of existing productization, internationally famous supply of brands merchant comprises HOLOEYE, BNS, companies such as HAMAMATSU, be divided into two kinds of reflective and transmission-types, all can be by the Wave-front phase of any accommodation reflex of graphic user interface software or transmitted beam, the annular phase front distribution function that will have phase place topology number in the utility model imports the graphic user interface software of programmable phase type spatial light modulator, the annular phase front that has phase place topology number that can realize light beam distributes, and the annular phase front regulator that specifically has phase place topology number that adopts in the present embodiment is that HOLOEYE company model is LC-R 2500 spatial light modulators.
Key of the present utility model is with the means that the annular phase front regulator that has phase place topology number is regulated the Wave-front phase of laser beam, to realize forming the purpose of light tweezer.Every employing analog structure of the present utility model, method and similar variation thereof all should be listed protection domain of the present utility model in.
Claims (7)
1. light forceps device based on Wave-front phase modulation, its device is made up of light emitted parts, beam diameter regulator, phase front regulator, optical focus parts; Be equipped with beam diameter regulator, phase front regulator and optical focus parts successively on the light emitted parts outgoing beam direction, it is characterized in that: described phase front regulator is the annular phase front regulator that has phase place topology number.
2. the light forceps device based on the Wave-front phase modulation according to claim 1 is characterized in that: the parts that the described annular phase front regulator that has phase place topology number is the zone radius variable size.
3. the light forceps device based on the Wave-front phase modulation according to claim 1 is characterized in that: the described annular phase front regulator that has phase place topology number is programmable phase type spatial light modulator, liquid crystal optics phase control device able to programme, ray machine electricity integrated phase control device.
4. the light forceps device based on the Wave-front phase modulation according to claim 1, it is characterized in that: described beam diameter regulator is the adjustable beam expander optics of beam expander multiplying power.
5. the light forceps device based on the Wave-front phase modulation according to claim 5, it is characterized in that: the beam expander optics that described beam expander multiplying power is adjustable is Galileo type beam expanding lens or Cape Town type beam expanding lens.
6. the light forceps device based on the Wave-front phase modulation according to claim 1, it is characterized in that: described light emitted parts are helium-neon laser.
7. the light forceps device based on the Wave-front phase modulation according to claim 1, it is characterized in that: described optical focus parts are Nikon flat field apochromatic objective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201198647U CN202018537U (en) | 2011-04-20 | 2011-04-20 | Optical-tweezers device based on wave-front phase modulation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201198647U CN202018537U (en) | 2011-04-20 | 2011-04-20 | Optical-tweezers device based on wave-front phase modulation |
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| CN202018537U true CN202018537U (en) | 2011-10-26 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102566077A (en) * | 2012-02-10 | 2012-07-11 | 上海理工大学 | Multifocal imaging device and method |
| CN102706444A (en) * | 2012-06-25 | 2012-10-03 | 杭州电子科技大学 | Method for measuring topological charges of optical vortex |
| CN106908945A (en) * | 2016-05-05 | 2017-06-30 | 中国计量大学 | A kind of dual-beam optical tweezer based on optical modulator |
| CN106908946A (en) * | 2016-05-05 | 2017-06-30 | 中国计量大学 | A kind of dual-beam optical optical tweezers system of simplification |
| CN111213220A (en) * | 2017-10-17 | 2020-05-29 | 安特卫普大学 | Spatial phase manipulation of a charged particle beam |
-
2011
- 2011-04-20 CN CN2011201198647U patent/CN202018537U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102566077A (en) * | 2012-02-10 | 2012-07-11 | 上海理工大学 | Multifocal imaging device and method |
| CN102706444A (en) * | 2012-06-25 | 2012-10-03 | 杭州电子科技大学 | Method for measuring topological charges of optical vortex |
| CN102706444B (en) * | 2012-06-25 | 2014-08-13 | 杭州电子科技大学 | Method for measuring topological charges of optical vortex |
| CN106908945A (en) * | 2016-05-05 | 2017-06-30 | 中国计量大学 | A kind of dual-beam optical tweezer based on optical modulator |
| CN106908946A (en) * | 2016-05-05 | 2017-06-30 | 中国计量大学 | A kind of dual-beam optical optical tweezers system of simplification |
| CN106908946B (en) * | 2016-05-05 | 2019-03-22 | 中国计量大学 | A kind of dual-beam optical optical tweezers system of simplification |
| CN106908945B (en) * | 2016-05-05 | 2019-10-08 | 中国计量大学 | A kind of dual-beam optical tweezer based on optical modulator |
| CN111213220A (en) * | 2017-10-17 | 2020-05-29 | 安特卫普大学 | Spatial phase manipulation of a charged particle beam |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111026 Termination date: 20120420 |