CN104037614A - Optical fiber optofluidic dye laser - Google Patents
Optical fiber optofluidic dye laser Download PDFInfo
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- CN104037614A CN104037614A CN201410263654.3A CN201410263654A CN104037614A CN 104037614 A CN104037614 A CN 104037614A CN 201410263654 A CN201410263654 A CN 201410263654A CN 104037614 A CN104037614 A CN 104037614A
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Abstract
The invention discloses an optical fiber optofluidic dye laser. The optical fiber optofluidic dye laser comprises a pump optical source, a pumping optical fiber, a first reflecting mirror, a dye hollow-core optical fiber and a second reflecting mirror which are connected with one another in sequence are arranged along a light beam emitting direction of the pump optical source, dye in sealed space which is formed by the first reflecting mirror, the dye hollow-core optical fiber and the second reflecting mirror serves as a laser gain medium, and a light beam shaping device which is used for adjusting wavefront phase positions of pump light beams is mounted between the pumping optical fiber and the first reflecting mirror. The optical fiber optofluidic dye laser has advantages of existing optofluidic lasers, and meanwhile, has the advantages that the system structure is simple, the miniaturization degree is high, the preparation technology is simple, axial symmetry optical pumping is achieved, the pumping optical energy utilizing ratio is high, the application range is wide, qualities of the light beams are good, output beam modes are controllable, the usage is flexible, and the like.
Description
Technical field
The invention belongs to optical technical field, relate to a kind of laser, a particularly optical fiber fluid dye laser, is mainly used in the fields such as laser measurement, laser processing, laser marking, laser welding, laser guidance, laser medicine, spectral technique, optical-fibre communications, wireless light communication, optical micro-manipulation, optical microphotograph, light-matter interaction as LASER Light Source.
Background technology
Laser is to amplify or the device of launching that vibrates in the material that utilizes stimulated radiation principle that light is stimulated at some.At present, there are many kinds of lasers, common are gas laser, solid state laser, liquid laser, semiconductor laser.The operation principle of various lasers is basic identical, and lasing essential condition is population upset and the loss of gain serious offense, so requisite part has driving source, has two parts of working media of metastable energy level in device.Excitation is to be energized into excitation state after working media absorbs external energy, creates conditions for realizing and maintaining population inversion.It is that stimulated radiation is occupied an leading position that working media has metastable level, thereby realizes light amplification.Part common in laser also has resonant cavity, and it can shorten the length of operation material well, can also regulate lasing pattern by changing cavity length.
Microflow control technique obtained very large development in the last few years, by microflow control technique and optical bond, had formed new branch of science light stream control (Optofluidics).And dyestuff is as good gain medium, there is threshold value low, wavelength regulation scope is wide, substantially covers whole visible region, utilizes frequency doubling technology can also extend to ultraviolet and region of ultra-red.The manufacture craft of optical fiber and waveguide also obtains unprecedented development, and the application of optical fiber is also more and more wider, and fiber optic applications is also reached its maturity to the technology of field of lasers.
Formerly, in technology, there is the dye laser light source based on light stream control techniques, referring to a United States Patent (USP), United States Patent (USP) title: Mechanically tunable elastomeric optofluidic distributed feedback dye laser, the patent No.: US7,817,698, B2.This laser has advantages of suitable, but, still exist some essence not enough: 1) system adopts optical grating to form feedback, builds optical grating in three-dimensional optical waveguide, forms distributed Feedback system, and then formation optical resonator, and be microstructure, from making in essence system very high to preparation technology's requirement, prepare the complex procedures of laser like this, difficulty is large, whole system complexity; 2) formerly the pump mode in technology is the pumping of paraxonic asymmetric, pump beam side-irradiation is to gain of light region, and the region of containing dye molecule, affect the uniformity of pumping effect, whole stimulated radiation system has had asymmetry, affect Laser Output Beam quality, meanwhile, the pumping efficiency of light energy utilization is low; 3) once the optical microstructures in system forms, cannot change, optical resonator structures is unadjustable, like this, causes the pattern of Laser Output Beam unadjustable, has affected the light source scope of application and application flexibility.
Summary of the invention
The present invention is directed to the technical problem existing in prior art and proposed a kind of optical fiber fluid dye laser, concrete scheme is as follows:
A kind of optical fiber fluid dye laser, comprise pump light source, be provided with the pumping optical fiber, the first speculum, dyestuff hollow-core fiber and the second speculum that connect successively in described pump light source light beam exit direction, in the enclosure space that described the first speculum, dyestuff hollow-core fiber and the second speculum form, be provided with dyestuff as gain medium, between described pumping optical fiber and described the first speculum, be also provided with the beam shaping device for regulating pump beam Wave-front phase.
Basic conception of the present invention is: based on Wave-front phase regulation and control axial focused light distribution mechanism, dyestuff is combined with optical fiber, dye lasing gain medium is arranged in dyestuff hollow-core fiber, utilizes the reflection of optical fiber two ends to carry out repeated multiple times coaxial pumping to dyestuff, finally obtains the output of laser.In order to obtain the laser of different mode, can realize by the Wave-front phase that regulates pump beam.Specific works process is as follows: pump light source outgoing pump beam, incident pump beam enters to inject pumping optical fiber at a certain angle, arrive beam shaping device, and enter the resonant cavity being formed by the first speculum, dyestuff hollow-core fiber and the second speculum after the Wave-front phase of pump beam being regulated by beam shaping device, in resonant cavity, be provided with dyestuff as gain medium; So far, pump beam is launched after entering resonant cavity on the first speculum and the second speculum, the dyestuff of dyestuff hollow-core fiber is subject to pump light excitation-emission fluorescence, between the first speculum and the laserresonator of the second speculum formation, back and forth propagate, produce resonance, then form stable optical pattern, from the second speculum outgoing, obtain stable Output of laser light beam.In the time need to adjusting the pattern of laser, regulate beam shaping device, the Wave-front phase that enters resonant cavity pump beam is before adjusted, thereby realizes being excited the pattern control of laser.
As preferably, described beam shaping device comprises the collimating lens, phase regulator and the convergent lens that arrange along pump beam direct of travel.Pump light source outgoing beam is through being coupled into pumping optical fiber, reach the front focal plane of the collimating lens of beam shaping device, collimating effect through collimating mirror makes parallel with optical axis, then through phase regulator, regulate the Wave-front phase of pump beam to distribute, and then optimization pump spot, make pump spot be tending towards being irradiated to convergence object lens after circle by ellipse, enter dye area through assembling after object lens are assembled.
As preferably, described phase regulator is the one of phase plate, liquid crystal spatial light phase modulator, micro-nano structure phase place optical modulator, fibre optic phase modulator.
As preferably, the first described speculum is for to be greater than 80% to pump beam transmissivity, the speculum that is greater than 90% for laser reflectivity.The first speculum is greater than 80% for the transmissivity of pump beam, and the object of setting is: on the one hand, make more pump beams enter resonant cavity, maintain particle beams turn around condition; On the other hand, need to possess equally reflection as the first speculum of a resonant cavity part and be excited the function of light beam, thereby in resonant cavity, shake for being excited light beam the condition that provides.Equally, be excited need to meet in light beam concussion condition the function of being excited after light beam gain to a certain extent from the second speculum outgoing as the second speculum of laser emitting window providing for resonant cavity, so the second speculum need to have certain transmitance, thereby the second speculum is made as 90% for laser reflectivity.
As preferably, described pumping optical fiber is the one of monomode fiber, multimode fiber, photonic crystal fiber, graded index fiber, liquid-core optical fibre.
The present invention not only has the existing advantage of existing light stream control laser, have that system configuration is simple, degree of miniaturization is high, preparation technology is simple simultaneously, axisymmetric optical pumping, the pumping efficiency of light energy utilization be high, the scope of application is wide, and good beam quality, Output mode be controlled, use the features such as flexible.
Compared with prior art, advantage of the present invention:
1) formerly in technology, can adopt the mask aligner in integrated circuit fields to carry out micro-nano device processing, but manufacturing process step is many, complex process; Making acting device complexity, expensive, and high to environmental requirement; Utilize laser straight connection technology to exist equally preparation system to build and there is suitable difficulty, and require high to optical-mechanical mechanism, the present invention utilizes Photosetting principle, focus area light intensity control technique and light stream control techniques are combined, and the few technique of course of processing step is simple, is convenient to realize, producing device is simple, cost is low, easy to use and popularization, and low to environment and structural requirement.
2) in the photoetching machine technique pre-existing, micro-nano structure mask plate is fixed, and in the time that required graphics processing is different, needs corresponding mask plate to replace, and can not dynamically adjust in real time; Laser direct-writing technology exists the shape of processed micro-nano device restricted equally, can not flexible processing arbitrary shape micro-nano device.The present invention can produce various required micro-nano device shapes by incident beam is modulated, and can realize dynamic regulation, so contrive equipment can be processed difformity micro-nano device, and can carry out different micro-nano devices and dynamically adjust in real time, expand process flexibility.
3) in addition, the present invention can utilize light stream control techniques, and the micro-nano device of machine-shaping automatically enters next flow process under fluid driven, therefore, is convenient to micro-nano device and carries out follow-up self assembly processing, can realize micro-nano device processing preparation in liquid environment.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of optical fiber fluid dye laser of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Be illustrated in figure 1 a kind of optical fiber fluid dye laser structural representation of the embodiment of the present invention, it is axisymmetry structure, in the light path of incident pump beam, is disposed with pump light source 1, pumping optical fiber 2, beam shaping device 3, the first speculum 7, dyestuff hollow-core fiber 8, the second speculum 9 with optical axis; The first speculum 7, dyestuff hollow-core fiber 8 and the second speculum 9 form resonant cavity, are provided with the dyestuff as gain medium in resonant cavity; Beam shaping device 3 is disposed with collimating lens 4, phase regulator 5 and convergent lens 6 on the pump beam direction of propagation, collimating lens 4 collimates pumping optical fiber 2 outgoing beams, the outgoing after phase regulator 5 carries out Wave-front phase regulation and control of collimation pump beam, and in outgoing beam light path, be provided with convergent lens 6, convergent lens 6 focuses on the pump beam of Wave-front phase regulation and control, and focusing focus area is positioned at the dyestuff gain regions of dyestuff hollow-core fiber 8.
The course of work of apparatus of the present invention is: pump light source 1 outgoing pump beam also enters system by pumping optical fiber 2, then form collimation pump beam through the collimating lens 4 in beam shaping device 3, the outgoing after phase regulator 5 carries out Wave-front phase regulation and control of collimation pump beam, in outgoing beam light path, be provided with convergent lens 6, convergent lens 6 focuses on the pump beam after Wave-front phase regulation and control, and focusing focus area is positioned at the dyestuff gain regions of dyestuff hollow-core fiber 8.The dyestuff of dyestuff hollow-core fiber 8 is subject to pump light excitation-emission fluorescence, between the first speculum 7 and the second speculum 9, back and forth propagates, and produces resonance, then forms stable optical pattern, from the second speculum 9 outgoing, obtains stable Output of laser light beam 10.In the time need to adjusting the pattern of Output of laser, can the Wave-front phase of pump beam be adjusted by the phase regulator 5 changing in beam shaping device 3, thereby realize the pattern control of shoot laser.
Dye molecule and use thereof in apparatus of the present invention, Wave-front phase control technique, vectorial field focusing principle, fiber optical waveguide element manufacturing and integrated are all mature technologies.Innovative point of the present invention is based on Wave-front phase regulation and control axial focused light distribution mechanism, dyestuff is combined with optical fiber, dye lasing gain medium is arranged in hollow optic fibre, provide one to there is the existing advantage of existing light stream control laser, have that system configuration is simple, degree of miniaturization is high, preparation technology is simple simultaneously, axisymmetric optical pumping, the pumping efficiency of light energy utilization be high, the scope of application is wide, and good beam quality, Output mode be controlled, use the optical fiber fluid dye laser of the feature such as flexible.
Above-described embodiment has been described in detail technical scheme of the present invention and beneficial effect; be understood that and the foregoing is only most preferred embodiment of the present invention; be not limited to the present invention; all any amendments of making within the scope of principle of the present invention, supplement and be equal to replacement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. an optical fiber fluid dye laser, comprise pump light source, be provided with the pumping optical fiber, the first speculum, dyestuff hollow-core fiber and the second speculum that connect successively in described pump light source light beam exit direction, in the enclosure space that described the first speculum, dyestuff hollow-core fiber and the second speculum form, be provided with dyestuff as gain medium, it is characterized in that, between described pumping optical fiber and described the first speculum, be also provided with the beam shaping device for regulating pump beam Wave-front phase.
2. a kind of optical fiber fluid dye laser according to claim 1, is characterized in that, described beam shaping device comprises the collimating lens, phase regulator and the convergent lens that arrange along pump beam direct of travel.
3. a kind of optical fiber fluid dye laser according to claim 2, is characterized in that, described phase regulator is the one of phase plate, liquid crystal spatial phase place optical modulator, micro-nano structure phase place optical modulator, fibre optic phase modulator.
4. a kind of optical fiber fluid dye laser according to claim 1, is characterized in that, the first described speculum is for to be greater than 80% to pump beam transmissivity, the speculum that is greater than 90% for laser reflectivity.
5. a kind of optical fiber fluid dye laser according to claim 1, is characterized in that, described pumping optical fiber is the one of monomode fiber, multimode fiber, photonic crystal fiber, graded index fiber, liquid-core optical fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263654.3A CN104037614A (en) | 2014-06-09 | 2014-06-09 | Optical fiber optofluidic dye laser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263654.3A CN104037614A (en) | 2014-06-09 | 2014-06-09 | Optical fiber optofluidic dye laser |
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| CN104037614A true CN104037614A (en) | 2014-09-10 |
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| CN201410263654.3A Pending CN104037614A (en) | 2014-06-09 | 2014-06-09 | Optical fiber optofluidic dye laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111048977A (en) * | 2019-12-26 | 2020-04-21 | 西北核技术研究院 | Dye laser |
| WO2020191719A1 (en) * | 2019-03-28 | 2020-10-01 | 深圳大学 | Reconfigurable liquid-core optical fiber and manufacturing method therefor as well as laser and manufacturing method therefor |
| CN112382918A (en) * | 2020-11-24 | 2021-02-19 | 浙江德扬精密仪器有限公司 | Dye laser |
-
2014
- 2014-06-09 CN CN201410263654.3A patent/CN104037614A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020191719A1 (en) * | 2019-03-28 | 2020-10-01 | 深圳大学 | Reconfigurable liquid-core optical fiber and manufacturing method therefor as well as laser and manufacturing method therefor |
| CN111048977A (en) * | 2019-12-26 | 2020-04-21 | 西北核技术研究院 | Dye laser |
| CN112382918A (en) * | 2020-11-24 | 2021-02-19 | 浙江德扬精密仪器有限公司 | Dye laser |
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Application publication date: 20140910 |