CN108445641A - A kind of tunable semiconductor laser optical optical tweezers system - Google Patents
A kind of tunable semiconductor laser optical optical tweezers system Download PDFInfo
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- CN108445641A CN108445641A CN201810450899.5A CN201810450899A CN108445641A CN 108445641 A CN108445641 A CN 108445641A CN 201810450899 A CN201810450899 A CN 201810450899A CN 108445641 A CN108445641 A CN 108445641A
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- optical
- semiconductor laser
- lens
- axicon
- tweezers system
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0916—Adapting the beam shape of a semiconductor light source such as a laser diode or an LED, e.g. for efficiently coupling into optical fibers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
- G02B27/0938—Using specific optical elements
- G02B27/095—Refractive optical elements
- G02B27/0955—Lenses
- G02B27/0966—Cylindrical lenses
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Laser Surgery Devices (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
The invention discloses a kind of tunable semiconductor laser optical optical tweezers systems, the plano-convex cylindrical lens being sequentially placed including edge emitting formula semiconductor laser and by the laser optical path of laser, gradient-index lens, axicon and condenser lens, plano-convex cylindrical lens should be placed on edge emitting formula semiconductor laser light exit propagation rule and present in the process at the position of circular distribution, condenser lens between axicon vertex at a distance from should be greater than the focal length of condenser lens, generate the maximum the non diffracting distance of class bessel beam through axicon after beam shaping system less than edge emitting formula semiconductor laser emergent light.The optical optical tweezers system of the present invention, if mobile gradient-index lens (GRIN) between plano-convex cylindrical lens at a distance from, so that it may to obtain various sizes of bottle beams, particle is captured and is operated.The optical optical tweezers system does not have to the optical damage problem for worrying particle, a kind of new effective way is provided for semiconductor laser optical optical tweezers system convenient for the micro integrated of optical optical tweezers system.
Description
Technical field
The present invention relates to laser device beam shaping field more particularly to a kind of tunable semiconductor laser optical tweezer systems
System.
Background technology
Optical tweezer is also known as single beam gradient ligh trap.It is exactly briefly the laser-formed three-dimensional gesture converged with a branch of height
Trap is captured, manipulation and control fine particle.Optical tweezer technology is formed using the mechanics effect that momentum between light and substance transmits
Three-dimensional gradient ligh trap manipulates particle.Bottle beams (Bottle beam) have local to be a branch of in optical transmission direction
The light beam of three dimensional closure empty region in the dark.Since bottle beams have the empty region in the dark of three dimensional closure and high intensity
Gradient, therefore can be used as the powerfuls such as laser catheter, optical tweezer and optical wrench.Bottle beams optical tweezer has due to itself
The advantages of having non-contact, low damage, has been successfully applied to the manipulation of active somatic cell, subcellular level particle, so optical tweezer skill
Art is widely used in field of biology.
Currently, the acquisition methods of bottle beams have numerous reports, as Identification with Method of Optical Holography, Bezier light coherent method,
Bezier light focusing etc..But it is all based on He-Ne laser mostly as light source, in terms of semiconductor laser (LD), directly
It is less using the report for generating bessel beam and bottle beams, it is used as partially coherent light source more, is carried out with He-Ne Lasers
Comparison.In terms of semiconductor generates bottle beams as light source, report amount and deep level are studied, He-Ne Lasers light is compared
Source system has a long way to go, and lacks the system research regulated and controled to semiconductor laser far field.
It is semiconductor laser high conversion efficiency, small, light-weight, diversified, it is convenient for the micromation of system, makes system more
Step up to gather, the Beams generated by axicon focusing system using semiconductor laser can compare compared to center lobe size
Solid and gas laser it is small, if semiconductor laser is directly applied to generation bottle beams, either in life
Object or atom cooling application field, have a clear superiority.But due to the influence of asymmetrical beam waveguide, semiconductor laser output
Light beam vertical junction in-plane and be parallel to junction plane direction be it is asymmetrical, output beam be astigmatism elliptical Gaussian beam
Beam, beam quality are unbalanced.Therefore, beam shaping method must be used in practical applications, and to solve, beam quality is poor, power
Low density problem.The center lobe size of the verified bessel beam for generating high-power semiconductor laser reduces
To the horizontal practicability that cannot achieve by traditional focus.If considering the micromation of system, then more step up in requisition for light source
It gathers, needs that solid or gas laser is considered to change semiconductor laser into.
Invention content
To solve the above problems, the present invention proposes a kind of tunable semiconductor laser optical optical tweezers system, using following skill
Art scheme：
A kind of tunable semiconductor laser optical optical tweezers system, it is characterised in that：Including side semiconductor laser and press laser
Plano-convex cylindrical lens, gradient-index lens (GRIN), axicon and the condenser lens that the laser optical path of device is sequentially placed are above-mentioned flat
Pillar lens are placed on edge emitting formula semiconductor laser light exit propagation rule and present in the process at the position of circular distribution, on
State condenser lens between axicon vertex at a distance from should be greater than the focal length of condenser lens, and be less than semiconductor laser outgoing beam
The maximum the non diffracting distance of class bessel beam is generated through axicon after orthopedic systems.
As a preferred embodiment, above-mentioned semiconductor laser is edge emitting formula semiconductor laser.
As a preferred embodiment, the f of above-mentioned gradient-index lens (GRIN)x=fy, fxFor x direction gradient index lens
(GRIN) focal length, fyFor the focal length of y direction gradients index lens (GRIN).
As a preferred embodiment, the change angle of divergence alpha that semiconductor laser is emitted after beam system shaping is 0 °~1.5 °.
As a preferred embodiment, above-mentioned optical optical tweezers system is captured and is operated to particle with bottle beams
Compared with prior art, the beneficial technique effect of the present invention is：The laser light that marginal mode semiconductor laser is sent out
Shu Yici is incident on after beam shaping system in axicon, and class Bezier is formed in the certain distance after axicon
The maximum the non diffracting distance of light beam then forms bottle beams after condenser lens, and utilizes the bottle beams generated
Carry out optical tweezer operation.Marginal mode semiconductor laser by be controlled divergence angle beam shaping system, incidence can be controlled
The distance of the radius and salt free ligands of light beam incidence in axicon.As long as control as a result, between plano-convex cylindrical lens and GRIN away from
From obtaining the laser beam of the different angles of divergence and various sizes of bottle beams, therefore the present invention is tunable partly to lead
Volumetric laser optical optical tweezers system provides a kind of effective way.The tunable semiconductor laser optical tweezer system of the present invention, optical tweezer model knot
Structure is simple, carries out optical tweezer operation using bottle beams, bottle beams light field " black hole " is not easy to living beings cell
It damages.Suitable for most cell, particle capture, manipulate work, and it is simple in structure, indirectly pass through size change over
Bottle beams carry out different particle manipulation actions, it is not necessary to worry phototoxis particle, carried for the application of optical optical tweezers system
Go out new tuning thinking, solves the limitation of existing system light forceps device.
Description of the drawings
Fig. 1 is the light path schematic diagram of the optical system of the present invention.
Fig. 2 is semiconductor laser device beam shaping schematic diagram in present system.
Specific implementation mode
In order to which the system schema of the present invention is explained further, the present invention is explained in detail below by specific implementation
It states.
Light path schematic diagram as shown in Figure 1, the present invention are a kind of tunable semiconductor laser optical optical tweezers system comprising its
The plano-convex cylindrical lens 2 that are sequentially placed including edge emitting formula semiconductor laser 1 and by the laser optical path of laser, graded index
Lens (GRIN) 3, axicon 4 and condenser lens 5.
Marginal mode launching semiconductor laser 1 is due to the influence of asymmetrical beam waveguide, and the light beam of output is in fast axle and slow axis
There is larger difference：Both direction has the larger and asymmetric angle of divergence；Both direction it is with a tight waist not on same position,
There is eigen astigmatism；In about 1 μm of fast axis direction Source size, and in about 75 μm of slow-axis direction Source size.
It is illustrated in figure 2 semiconductor laser device beam shaping schematic diagram, marginal mode semiconductor laser 1 first is opened,
Plano-convex cylindrical lens 2 are placed in appropriate position, and laser beam is after plano-convex cylindrical lens 2, the angle of divergence of laser beam fast axis direction
Through overcompression, reach consistent with the angle of divergence of slow-axis direction.Gradient-index lens (GRIN) 3 are placed at the positions m behind, are led to
Control plano-convex cylindrical lens 2 and gradient-index lens (GRIN) 3 are crossed to control the angle of divergence alpha of laser beam outgoing.
In Fig. 1, it is emitted the light beam of different angle of divergence alpha after beam shaping system, after incident axicon 4, in axicon 4
Class bessel beam approximate diffraction-free region is formed in certain distance afterwards.In the salt free ligands region, maximum the non diffracting distance
It can be by formula Zmax=a/ [(n-1) γ-α] is calculated, and wherein a is the radius for being incident on 4 laser beam of axicon, and n is axicon
4 refractive index, γ are the cone angle of axicon 4.The z after axicon 40Condenser lens 5 is placed at position, and it is empty to form local behind
Heart light beam.When controlling through the laser beam of different angle of divergence alpha after beam shaping system, it is possible thereby to form various sizes of office
Domain hollow beam.
In use, bottle beams are used to form optical tweezer three-dimensional gradient light field, carry out particle and capture and manipulate.
In this example, for plano-convex cylindrical lens under conditions of can meet fast axle compression, the thickness of plano-convex cylindrical lens should be as possible
It is small, it is integrated convenient for the micromation of optical system.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every 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 tunable semiconductor laser optical optical tweezers system, it is characterised in that：Including side semiconductor laser (1) and press laser
Plano-convex cylindrical lens (2), gradient-index lens (GRIN) (3), axicon (4) and the focusing that the laser optical path of device is sequentially placed are saturating
Mirror (5), above-mentioned flat column convex lens (2) are placed on the position that semiconductor laser (1) light goes out in communication process to present circular distribution
Place, above-mentioned condenser lens (5) with axicon (4) vertex between at a distance from should be greater than the focal lengths of condenser lens (5), and less than semiconductor
Laser (1) outgoing beam generates the maximum the non diffracting distance of class bessel beam after orthopedic systems through axicon (4).
2. a kind of tunable semiconductor laser optical optical tweezers system as described in claim 1, it is characterised in that：Above-mentioned semiconductor swashs
Light device (1) is edge emitting formula semiconductor laser.
3. a kind of tunable semiconductor laser optical optical tweezers system as described in claim 1, it is characterised in that：Graded index is saturating
The f of mirror (GRIN) (3)x=fy, fxFor the focal length of x direction gradients index lens (GRIN) (3), fyFor y direction gradient refractive index
The focal length of lens (GRIN) (3).
4. a kind of tunable semiconductor laser optical optical tweezers system as described in claim 1, it is characterised in that：Semiconductor laser
(1) the change angle of divergence alpha being emitted after beam system shaping is 0 °~1.5 °.
5. a kind of tunable semiconductor laser optical optical tweezers system as described in claim 1, it is characterised in that：Above-mentioned optical optical tweezers system
Particle is captured and operated with bottle beams.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810450899.5A CN108445641A (en) | 2018-05-11 | 2018-05-11 | A kind of tunable semiconductor laser optical optical tweezers system |
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| CN201810450899.5A CN108445641A (en) | 2018-05-11 | 2018-05-11 | A kind of tunable semiconductor laser optical optical tweezers system |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109244811A (en) * | 2018-11-15 | 2019-01-18 | 云南大学 | A kind of anti-gauss hollow laser light source of Great Dark Spot |
| CN109782451A (en) * | 2019-03-25 | 2019-05-21 | 苏州大学 | A kind of method and system for realizing the shaping of pyramid field using light beam spatial coherence structure |
| CN110361857A (en) * | 2019-07-24 | 2019-10-22 | 昆明理工大学 | It is a kind of based on annular optical tweezer and dark field micro- super-resolution device and its resolving method |
| CN110617843A (en) * | 2019-09-19 | 2019-12-27 | 上海兰宝传感科技股份有限公司 | Photoelectric sensor with adjustable light spot size and fixed focus position and adjusting method |
| CN111715624A (en) * | 2019-03-19 | 2020-09-29 | 武汉光谷航天三江激光产业技术研究院有限公司 | Laser cleaning device |
| CN112068251A (en) * | 2020-09-06 | 2020-12-11 | 桂林电子科技大学 | Optical fiber Bessel light beam optical tweezers and device |
| CN113050290A (en) * | 2021-03-12 | 2021-06-29 | 华中科技大学 | Optical intensity modulation element, structure design method and optical shaping system |
| CN113075174A (en) * | 2021-03-12 | 2021-07-06 | 华中科技大学 | Oblique top-mounted static Bessel optical sheet imaging system |
| CN113093203A (en) * | 2021-04-02 | 2021-07-09 | 探维科技(北京)有限公司 | Scanning laser radar of linear array detector |
| CN113156634A (en) * | 2021-04-07 | 2021-07-23 | 华侨大学 | Multi-scene real-time application ultra-portable optical tweezers |
| CN114503460A (en) * | 2019-07-31 | 2022-05-13 | 山东航天电子技术研究所 | Free space laser communication system |
| CN115685568A (en) * | 2022-11-04 | 2023-02-03 | 中国航发四川燃气涡轮研究院 | Method and device for capturing particle foreign matter in tail jet flow field of aircraft engine by using optical trap |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919500B (en) * | 2018-09-19 | 2020-08-21 | 长春理工大学 | Tunable local hollow beam optical tweezers system based on double-beam laser trap |
| 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 |
| CN109244811A (en) * | 2018-11-15 | 2019-01-18 | 云南大学 | A kind of anti-gauss hollow laser light source of Great Dark Spot |
| CN109244811B (en) * | 2018-11-15 | 2019-09-24 | 云南大学 | A kind of anti-gauss hollow laser light source of Great Dark Spot |
| CN111715624A (en) * | 2019-03-19 | 2020-09-29 | 武汉光谷航天三江激光产业技术研究院有限公司 | Laser cleaning device |
| CN109782451A (en) * | 2019-03-25 | 2019-05-21 | 苏州大学 | A kind of method and system for realizing the shaping of pyramid field using light beam spatial coherence structure |
| CN110361857A (en) * | 2019-07-24 | 2019-10-22 | 昆明理工大学 | It is a kind of based on annular optical tweezer and dark field micro- super-resolution device and its resolving method |
| CN114503460A (en) * | 2019-07-31 | 2022-05-13 | 山东航天电子技术研究所 | Free space laser communication system |
| CN110617843B (en) * | 2019-09-19 | 2021-09-07 | 上海兰宝传感科技股份有限公司 | Photoelectric sensor with adjustable light spot size and fixed focus position and adjusting method |
| CN110617843A (en) * | 2019-09-19 | 2019-12-27 | 上海兰宝传感科技股份有限公司 | Photoelectric sensor with adjustable light spot size and fixed focus position and adjusting method |
| CN112068251A (en) * | 2020-09-06 | 2020-12-11 | 桂林电子科技大学 | Optical fiber Bessel light beam optical tweezers and device |
| CN113075174A (en) * | 2021-03-12 | 2021-07-06 | 华中科技大学 | Oblique top-mounted static Bessel optical sheet imaging system |
| CN113050290A (en) * | 2021-03-12 | 2021-06-29 | 华中科技大学 | Optical intensity modulation element, structure design method and optical shaping system |
| CN113075174B (en) * | 2021-03-12 | 2022-07-05 | 华中科技大学 | Oblique top-mounted static Bessel optical sheet imaging system |
| CN113093203A (en) * | 2021-04-02 | 2021-07-09 | 探维科技(北京)有限公司 | Scanning laser radar of linear array detector |
| CN113093203B (en) * | 2021-04-02 | 2023-11-21 | 探维科技(北京)有限公司 | Linear array detector scanning laser radar |
| CN113156634A (en) * | 2021-04-07 | 2021-07-23 | 华侨大学 | Multi-scene real-time application ultra-portable optical tweezers |
| CN115685568A (en) * | 2022-11-04 | 2023-02-03 | 中国航发四川燃气涡轮研究院 | Method and device for capturing particle foreign matter in tail jet flow field of aircraft engine by using optical trap |
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Application publication date: 20180824 |