CN109946843A - A kind of more local doughnut laser trap commutating optical beam systems of double V-shaped structure - Google Patents
A kind of more local doughnut laser trap commutating optical beam systems of double V-shaped structure Download PDFInfo
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- CN109946843A CN109946843A CN201910378808.6A CN201910378808A CN109946843A CN 109946843 A CN109946843 A CN 109946843A CN 201910378808 A CN201910378808 A CN 201910378808A CN 109946843 A CN109946843 A CN 109946843A
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Abstract
The present invention relates to laser device beam shaping field more particularly to a kind of more local doughnut laser trap commutating optical beam systems of double V-shaped structure, including laser source, spectrum groupware, mirror assembly and bottle beams formation component；Two beam laser are divided into the first light beam and third light beam along first direction of propagation by the first spectrum groupware and the second spectrum groupware, the second light beam and the 4th light beam along second direction of propagation, each light beam incident hollow beam formation component after mirror assembly respectively, the local doughnut laser trap that the beam intersection after hollow beam formation component is formed.The configuration of the present invention is simple, it is easily operated, there is good application value in optical tweezer technology.
Description
Technical field
The present invention relates to laser device beam shaping field more particularly to a kind of more local doughnut laser trap conversions of double V-shaped structure
Beam system.
Background technique
Hollow laser beam, this laser is after generating device outgoing, and light intensity is zero near the primary optical axis of its direction of propagation,
It is propagated at it and hollow annular beam is presented on track.This kind of laser beam is referred to as " hollow laser beam " or " dark core laser ", " position
The presence of phase singular point " embodies the particularity of this kind of light beam.This laser beam have common laser beam frequency, power,
On the basis of the basic parameters such as the angle of divergence, more there are the special parameters such as blackening size, interior outside cone angle.
Bottle beams are a branch of light beam for having partial 3 d to close empty region in the dark in optical transmission direction.In the dark
It is surrounded around empty region by light beam, there is high intensity gradient, the three-dimensional manipulation to particle may be implemented.Since local is hollow
Light beam has special optical field distribution, it is made to have very high practical value, at present in cold atom capture and optical micro-manipulation etc.
Field obtains practical application.Therefore, it always is the hot spot of research.
Currently, existing generation bottle beams system, it is divided into the bottle beams system of single ligh trap and multiple
The array bottle beams system of ligh trap, but more local doughnut laser trap commutating optical beam systems are studied less.
Summary of the invention
To solve the problems, such as that above-mentioned background technique, the present invention propose a kind of more local doughnut laser traps of double V-shaped structure
Commutating optical beam system, structure is simple, easily operated, has good application value in optical tweezer technology.
Technical proposal that the invention solves the above-mentioned problems is: a kind of double V-shaped more local doughnut laser trap commutating optical beam systems of structure
System, is characterized in that
Including laser source, spectrum groupware, mirror assembly and bottle beams formation component；
The laser source includes first laser device and second laser；The spectrum groupware includes the first spectrum groupware and the
Two spectrum groupwares；The mirror assembly includes the first mirror assembly and the second mirror assembly；
The hollow beam formation component includes the first hollow beam formation component and the second hollow beam formation component, institute
The structure for stating the first hollow beam formation component and the second hollow beam formation component is identical, wherein the first hollow beam generation group
Part includes two axicon lens that structure is identical, apex angle is opposite；
It is divided into propagate along first direction first after the first spectrum groupware by the light beam that first laser device issues
Light beam and the second light beam propagated along second direction；First light beam and the second light beam pass through the first mirror assembly respectively
With the first conical hollow light beam and the second conical hollow light beam are formed after the first hollow beam formation component；First taper is empty
The optical axis of the optical axis of heart light beam and the second conical hollow light beam is on same straight line；
It is divided into the third propagated along first direction after the second spectrum groupware by the light beam that second laser issues
Light beam and the 4th light beam propagated along second direction；Third light beam and the 4th light beam pass through the second mirror assembly respectively
With formation third conical hollow light beam and the 4th conical hollow light beam after the second hollow beam formation component；The third taper is empty
The optical axis of the optical axis of heart light beam and the 4th conical hollow light beam is on same straight line；
The first conical hollow light beam, the second conical hollow light beam, third conical hollow light beam, the 4th conical hollow light
Beam intersection, forms the more local doughnut laser trap commutating optical beam systems of double V-shaped structure.
Further, above-mentioned first spectrum groupware and the second spectrum groupware are respectively the first Amici prism and the second light splitting rib
Mirror.
Further, above-mentioned first mirror assembly includes the first plane mirror, second plane mirror, the second reflection
Component includes third plane mirror, fourth plane reflecting mirror.
Further, the material of above-mentioned axicon lens is BK7, and cone angle is 12 °, with a thickness of 0.5mm.
Further, above-mentioned first laser device and second laser are TO46VCSEL laser, wavelength 760nm,
Threshold current is 0.5mA, output power 0.25mW.
Advantages of the present invention:
The present invention utilizes two identical laser sources, forms four after being divided, reflecting, then by hollow beam formation component
A mutually compound conical hollow light beam, the relative distance moved between hollow beam formation component form the hollow light of more locals
Trap；The local doughnut laser trap of different number can be generated by changing distance between hollow beam formation component in the present invention, and
And it can change the size of each local doughnut laser trap in moving process；The present invention can be in the case where not changing quantity of light source
The quantity and size of local doughnut laser trap are tuned, convenient for capturing to multiple particles and different size of particle；Knot of the present invention
Structure is simple, easily operated, has good application value in optical tweezer technology.
Detailed description of the invention
Fig. 1 is the light path schematic diagram of optical system of the invention；
Fig. 2 is the axicon lens schematic diagram of optical system of the invention；
Fig. 3 is the hollow seven traps light path schematic diagram of more locals of optical system of the invention；
Fig. 4 is the hollow seven traps hot spot schematic diagram of more locals of optical system of the invention；
Fig. 5 is the hollow two traps light path schematic diagram of more locals of optical system of the invention；
Fig. 6 is the hollow two traps hot spot schematic diagram of more locals of optical system of the invention.
Wherein, 1- first laser device；2- second laser；The first spectrum groupware of 301-；The second spectrum groupware of 302-；401-
First axicon lens；402- the second axicon lens；501- third axicon lens；The 4th axicon lens of 502-；601-
First plane mirror；602- second plane mirror；701- third plane mirror；702- fourth plane reflecting mirror.
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present invention of protection is sought, but is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Invent the range of protection.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, " a variety of " or the meaning of " plurality " is two or
Two or more, unless otherwise specifically defined.
Referring to Fig. 1, Fig. 1 is a kind of whole knot of double V-shaped more local doughnut laser trap commutating optical beam systems of structure of the invention
Structure schematic diagram, including laser source, spectrum groupware, mirror assembly, hollow beam formation component.
The laser source includes first laser device 1 and second laser 2；The spectrum groupware includes the first spectrum groupware
301 and second spectrum groupware 302；The mirror assembly includes the first mirror assembly and the second mirror assembly.The sky
Heart light beam formation component includes the first hollow beam formation component and the second hollow beam formation component.
The light beam issued by first laser device 1 is divided into after the first spectrum groupware 301 to be propagated along first direction
First light beam and the second light beam propagated along second direction；First light beam and the second light beam pass through the first reflecting mirror respectively
The first conical hollow light beam and the second conical hollow light beam are formed after component and the first hollow beam formation component；First cone
The optical axis of the optical axis of shape hollow beam and the second conical hollow light beam is on same straight line；The light issued by second laser 2
Beam is divided into the third light beam propagated along first direction after the second spectrum groupware 302 and propagates along second direction
The 4th light beam；Third light beam and the 4th the light beam shape after the second mirror assembly and the second hollow beam formation component respectively
At third conical hollow light beam and the 4th conical hollow light beam；The optical axis and the 4th conical hollow of the third conical hollow light beam
The optical axis of light beam is on same straight line；The first conical hollow light beam, the second conical hollow light beam, third conical hollow light
Beam, the 4th conical hollow beam intersection form local doughnut laser trap quantity and the adjustable hollow light of the more locals of double V-shaped structure
Trap commutating optical beam system.
In the present embodiment, first laser device 1 and second laser 2 are two identical TO46VCSEL lasers, wavelength
For 760nm, threshold current 0.5mA, output power 0.25mW, the light beam of first laser device 1 and the sending of second laser 2 is flat
Row.
First spectrum groupware 301 and the second spectrum groupware 302 are identical Amici prism, the respectively first light splitting rib
Mirror and the second Amici prism.
In the present embodiment, first mirror assembly is 45 ° of corner of second plane mirror 602 and 225 ° of corner
The first plane mirror 601.Second mirror assembly is 45 ° of corner of fourth plane reflecting mirror 702 and 225 ° of corner
Third plane mirror 701.
In the present embodiment, the structure phase of the first hollow beam formation component and the second hollow beam formation component
Together, wherein the first hollow beam formation component includes two axicon lens that structure is identical, apex angle is opposite.First hollow beam
Formation component is made of the first axicon lens 401 and the second axicon lens 402, and the second hollow beam formation component is by third
Axicon lens 501 and the 4th axicon lens 502 composition.Each axicon lens arrangement parameter is identical, as shown in Fig. 2, axis rib
The material of axicon lens is BK7, and cone angle is 12 °, with a thickness of 0.5mm.
In the present embodiment, the adjustable local doughnut laser trap size of relative distance and the local for changing axicon lens are empty
Heart ligh trap quantity.When the distance of the first axicon lens 401 and the second axicon lens 402, third axicon lens 501 and
The distance between four axicon lens 502 are greater than 42mm, can form hollow seven trap of local, as shown in Figure 3.Wherein dotted line is light
The hot spot of spot detector, each position detection is as shown in Figure 4.Increase II, IV, V, VI and VII light with axicon lens spacing
Trap size is gradually increased, and I and III ligh trap size is gradually reduced.When the distance between axicon lens be less than 42mm, can be formed
Hollow two trap of local, as shown in figure 5, wherein dotted line is laser spot detection device, the hot spot of detection is as shown in Figure 6.As axicon is saturating
The reduction of mirror spacing, I and II ligh trap size are gradually reduced.The present invention can distance can between hollow beam formation component by changing
To generate the local doughnut laser trap of different number, captured convenient for the particle to multiple and different sizes.
The above description is only an embodiment of the present invention, and the scope of the patents of the invention is not limited with this, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant systems
Domain is commanded, is included within the scope of the present invention.
Claims (5)
1. a kind of more local doughnut laser trap commutating optical beam systems of double V-shaped structure, it is characterised in that:
Including laser source, spectrum groupware, mirror assembly and bottle beams formation component；
The laser source includes first laser device (1) and second laser (2)；The spectrum groupware includes the first spectrum groupware
(301) and the second spectrum groupware (302)；The mirror assembly includes the first mirror assembly and the second mirror assembly；
The hollow beam formation component includes the first hollow beam formation component and the second hollow beam formation component, and described the
The structure of one hollow beam formation component and the second hollow beam formation component is identical, wherein the first hollow beam formation component packet
Include two axicon lens that structure is identical, apex angle is opposite；
It is divided by the first spectrum groupware (301) after by the light beam that first laser device (1) issues along the propagation of first direction
First light beam and the second light beam propagated along second direction；First light beam and the second light beam pass through the first reflecting mirror respectively
The first conical hollow light beam and the second conical hollow light beam are formed after component and the first hollow beam formation component；First cone
The optical axis of the optical axis of shape hollow beam and the second conical hollow light beam is on same straight line；It is issued by second laser (2)
Light beam is divided into the third light beam propagated along first direction after the second spectrum groupware (302) and along second direction
The 4th light beam propagated；Third light beam and the 4th light beam pass through the second mirror assembly and the second hollow beam formation component respectively
Third conical hollow light beam and the 4th conical hollow light beam are formed afterwards；The optical axis and the 4th taper of the third conical hollow light beam
The optical axis of hollow beam is on same straight line；The first conical hollow light beam, the second conical hollow light beam, third taper are empty
Heart light beam, the 4th conical hollow beam intersection form the more local doughnut laser trap commutating optical beam systems of double V-shaped structure.
2. the more local doughnut laser trap commutating optical beam systems of double V-shaped structure according to claim 1, it is characterised in that:
First spectrum groupware (301) and the second spectrum groupware (302) are respectively the first Amici prism and the second Amici prism.
3. the more local doughnut laser trap commutating optical beam systems of double V-shaped structure according to claim 2, it is characterised in that:
First mirror assembly includes the first plane mirror (601), second plane mirror (602), the second reflection group
Part includes third plane mirror (701), fourth plane reflecting mirror (702).
4. the more local doughnut laser trap commutating optical beam systems of double V-shaped structure according to any one of claims 1 to 3, feature exist
In: the material of the axicon lens is BK7, and cone angle is 12 °, with a thickness of 0.5mm.
5. the more local doughnut laser trap commutating optical beam systems of double V-shaped structure according to claim 4, it is characterised in that: described
First laser device (1) and second laser (2) are TO46VCSEL laser, and wavelength 760nm, threshold current are
0.5mA, output power 0.25mW.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910378808.6A CN109946843A (en) | 2019-05-08 | 2019-05-08 | A kind of more local doughnut laser trap commutating optical beam systems of double V-shaped structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910378808.6A CN109946843A (en) | 2019-05-08 | 2019-05-08 | A kind of more local doughnut laser trap commutating optical beam systems of double V-shaped structure |
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| CN109946843A true CN109946843A (en) | 2019-06-28 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788715A (en) * | 2010-01-19 | 2010-07-28 | 华侨大学 | Novel optical element for generating bottle beams |
| WO2018001846A1 (en) * | 2016-07-01 | 2018-01-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Arrangement for producing a bessel beam |
| CN107907983A (en) * | 2017-10-31 | 2018-04-13 | 昆明理工大学 | Digital holographic microscopy device and its method of work based on bottle beams illumination |
| CN108919500A (en) * | 2018-09-19 | 2018-11-30 | 长春理工大学 | Tunable bottle beams optical optical tweezers system based on double light beam laser trap |
| CN109613708A (en) * | 2019-01-16 | 2019-04-12 | 长春理工大学 | A kind of hollow four trap system of local based on dual beam configuration |
| CN109633916A (en) * | 2019-01-16 | 2019-04-16 | 长春理工大学 | A kind of array bottle beams system based on bar item |
-
2019
- 2019-05-08 CN CN201910378808.6A patent/CN109946843A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101788715A (en) * | 2010-01-19 | 2010-07-28 | 华侨大学 | Novel optical element for generating bottle beams |
| WO2018001846A1 (en) * | 2016-07-01 | 2018-01-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Arrangement for producing a bessel beam |
| CN107907983A (en) * | 2017-10-31 | 2018-04-13 | 昆明理工大学 | Digital holographic microscopy device and its method of work based on bottle beams illumination |
| CN108919500A (en) * | 2018-09-19 | 2018-11-30 | 长春理工大学 | Tunable bottle beams optical optical tweezers system based on double light beam laser trap |
| CN109613708A (en) * | 2019-01-16 | 2019-04-12 | 长春理工大学 | A kind of hollow four trap system of local based on dual beam configuration |
| CN109633916A (en) * | 2019-01-16 | 2019-04-16 | 长春理工大学 | A kind of array bottle beams system based on bar item |
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Application publication date: 20190628 |
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