CN104409949A - Ultra-short pulse fiber laser - Google Patents
Ultra-short pulse fiber laser Download PDFInfo
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- CN104409949A CN104409949A CN201410618159.XA CN201410618159A CN104409949A CN 104409949 A CN104409949 A CN 104409949A CN 201410618159 A CN201410618159 A CN 201410618159A CN 104409949 A CN104409949 A CN 104409949A
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Abstract
The invention provides an ultra-short pulse fiber laser. The ultra-short pulse fiber laser comprises a pumping source, an optical fiber coupler, a first reflection type optical fiber grating, a gain optical fiber, a second reflection type optical fiber grating and an acousto-optic modulator; the pumping source is connected with the input port of the optical fiber coupler; the output port of the optical fiber coupler is connected with the first reflection type optical fiber grating; the first reflection type optical fiber grating is connected with the acousto-optic modulator through the gain optical fiber; light is output through the second reflection type optical fiber grating; the pumping source, the optical fiber coupler, the reflection type optical fiber gratings, the gain optical fiber and the acousto-optic modulator are respectively arranged on a substrate; the substrate is provided with parallel heat dissipation channels; and the heat dissipation channels form a heat dissipation array. The ultra-short pulse fiber laser of the invention can satisfy requirements for high integration, high average output power and high peak power and can also assist in reducing cost. According to the ultra-short pulse fiber laser, an all-optical fiber structure can be realized. The ultra-short pulse fiber laser has the advantages of simple design and compact structure.
Description
Technical field
The present invention relates to a kind of Fiber laser technology field, specifically, the present invention relates to a kind of ultrashort pulse fiber laser.
Background technology
Fiber laser has the advantages such as volume is little, lightweight, conversion efficiency is high, output beam quality is good, obtains fast development in recent years.Have high-output power, high light beam quality, high stability pulse laser be one of focus that laser field people pay close attention to, particularly adjust Q, mode locked fiber laser due to high-frequency ultrashort pulse can be produced, optical communication system, photoelectric sensing, detection diagnosis, biomedical, super micro-processing and and the various fields such as military affairs have wide prospect.
According to the difference producing light pulse sequence principle, pulse optical fiber can be divided into adjusts Q (Q-Switching) and locked mode two kinds.The light pulse sequence repetition rate that Q impulse fiber laser produces is usually lower, and be about 10-200kHz, pulse duration was about for tens nanoseconds, and spectral width is about tens to hundreds of nanometers.The light pulse sequence repetition rate that mode locking pulse fiber laser produces is general higher, and be usually greater than 10MHz, pulse duration is about psec to femtosecond magnitude, and spectral width is about several nanometer to tens nanometers.
Although existing fiber laser just towards all-fiber development, meanwhile brings the problem that conversion efficiency is lower, production cost is high; Meanwhile, for the pulse optical fiber worked under special operation condition condition, the problem considering high temperature and heat radiation need be concentrated.For the problems referred to above, those skilled in the art need badly provides a kind of new super-short pulse optical fiber.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of lower cost, high average output power, is easy to the ultrashort pulse fiber laser dispelled the heat simultaneously.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of ultrashort pulse fiber laser, and described ultrashort pulse fiber laser comprises: pumping source, fiber coupler, the first reflection-type optical fiber grating, gain fibre, the second reflection-type optical fiber grating and acousto-optic modulator; Pumping source connects the input port of described fiber coupler, the output port of described fiber coupler connects described first reflection-type optical fiber grating, described first reflection-type optical fiber grating is connected with described acousto-optic modulator by gain fibre, and light is by exporting after described second reflection-type optical fiber grating;
Wherein, described pumping source, fiber coupler, the first reflection-type optical fiber grating, gain fibre, the second reflection-type optical fiber grating and acousto-optic modulator are installed on a matrix respectively, described matrix is provided with parallel heat dissipation channel, described heat dissipation channel composition heat sinking array.
Preferably, described fiber coupler is formed by fused biconical taper.
Preferably, described pumping source is semiconductor laser, solid state laser, gas laser, fiber laser or Raman laser, and the scope exporting the central wavelength lambda of pump light is: 500nm≤λ≤1500nm.
Preferably, described gain fibre is ytterbium-doped double-cladded-layer monomode fiber.
Preferably, described ultrashort pulse fiber laser also comprises light echo and eliminates parts, and described light echo is eliminated parts and is connected with described acousto-optic modulator.
Preferably, described light echo is eliminated parts and is comprised optical fiber and be coated in the refractive index matching layers on optical fiber end surface.
Preferably, described heat dissipation channel is the rectangular channel run through, and the height of described rectangular channel is less than the thickness of described matrix.
The invention provides a kind of ultrashort pulse fiber laser, meet the requirement of fiber laser to high integration, high average output power and high-peak power, also reduce cost simultaneously, achieve all optical fibre structure, simplicity of design, compact conformation; In addition, heat sinking array increases the contact area with air greatly, provides radiating efficiency, have handling ease, with low cost, be convenient to installation and maintenance, heat radiation is simple efficient, reliability is high, be convenient to the features such as system extension.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structured flowchart of ultrashort pulse fiber laser preferred embodiment of the present invention;
Fig. 2 is the structural representation of matrix preferred embodiment of the present invention.
[in figure Reference numeral]:
10. pumping source, 20. fiber couplers, 30. first reflection-type optical fiber gratings, 40. gain fibres, 50. acousto-optic modulators, 60. second reflection-type optical fiber gratings, 70. matrixes, 80. heat dissipation channels.
Embodiment
For making content of the present invention clearly understandable, below in conjunction with Figure of description, content of the present invention is described further.Certain the present invention is not limited to this specific embodiment, and the general replacement known by those skilled in the art is also encompassed in protection scope of the present invention.Secondly, the present invention's detailed statement that utilized schematic diagram to carry out, when describing example of the present invention in detail, for convenience of explanation, schematic diagram, should in this, as limitation of the invention not according to general ratio partial enlargement.
Above-mentioned and other technical characteristic and beneficial effect, will in conjunction with the embodiments and accompanying drawing 1 ultrashort pulse fiber laser of the present invention is described in detail.As shown in Figure 1, 2, Fig. 1 is the structural representation of ultrashort pulse fiber laser preferred embodiment of the present invention; Fig. 2 is the structural representation of matrix preferred embodiment of the present invention.
As shown in Figure 1, 2, the invention provides a kind of ultrashort pulse fiber laser, described ultrashort pulse fiber laser comprises: pumping source 10, fiber coupler 20, first reflection-type optical fiber grating 30, gain fibre 40, second reflection-type optical fiber grating 60 and acousto-optic modulator 50; Pumping source 10 connects the input port of described fiber coupler 20, the output port of described fiber coupler 20 connects described first reflection-type optical fiber grating 30, described first reflection-type optical fiber grating 30 is connected with described acousto-optic modulator 50 by gain fibre 40, and light is by exporting after described second reflection-type optical fiber grating 60.
Concrete, described fiber coupler 20 is formed by fused biconical taper.
In the present embodiment, pumping source 10 is semiconductor laser, solid state laser, gas laser, fiber laser or Raman laser, and the scope exporting the central wavelength lambda of pump light is: 500nm≤λ≤1500nm.Pumping source meets the requirement of fiber laser to high integration, high average output power and high-peak power, also reduces the cost of fiber laser simultaneously.
Gain fibre 40 is ytterbium-doped double-cladded-layer monomode fiber.Gain fibre 40 adopts single-mode double-clad optical fiber, and output beam quality is close to the laser of diffraction limit.
The present invention also comprises light echo and eliminates parts, and light echo is eliminated parts and is connected with acousto-optic modulator 50.Light echo is eliminated parts and is comprised optical fiber and be coated in the refractive index matching layers on optical fiber end surface; Light echo eliminate the function of parts be reduction first reflection-type optical fiber grating 30 through the impact of spectral component on reflectance spectrum composition.
For ease of heat radiation, described pumping source 10, fiber coupler 20, first reflection-type optical fiber grating 30, gain fibre 40, second reflection-type optical fiber grating 60 and acousto-optic modulator 50 are installed on a matrix 70 respectively, described matrix 70 is provided with parallel heat dissipation channel 80, and described heat dissipation channel 80 forms heat sinking array.Wherein, the described rectangular channel of heat dissipation channel 80 for running through, the height of described rectangular channel is less than the thickness of described matrix 70.Heat sinking array increases the contact area with air greatly, provides radiating efficiency.
In sum, the invention provides a kind of ultrashort pulse fiber laser, meet the requirement of fiber laser to high integration, high average output power and high-peak power, also reduce cost simultaneously, achieve all optical fibre structure, simplicity of design, compact conformation; In addition, heat sinking array increases the contact area with air greatly, provides radiating efficiency, have handling ease, with low cost, be convenient to installation and maintenance, heat radiation is simple efficient, reliability is high, be convenient to the features such as system extension.
Although the present invention essentially describes above embodiment, just come as an example to be described, and the present invention is not limited to this.Those of ordinary skill in the art can make multiple modification and application and not depart from the essential characteristics of embodiment.Such as, each parts that embodiment is shown in detail can be revised and run, to described modification with apply relevant difference and can think and be included in protection scope of the present invention that claims limit.
Embodiment involved in this specification, its implication is that specially feature, structure or the characteristic described in conjunction with this embodiment comprises at least one embodiment of the present invention.These terms come across in specification everywhere differ to establish a capital and relate to same embodiment.In addition, when describing special characteristic, structure or characteristic in conjunction with any embodiment, all think that it falls in the scope of these special characteristics, structure or the characteristic that those of ordinary skill in the art just can realize in conjunction with other embodiments.
Claims (7)
1. a ultrashort pulse fiber laser, is characterized in that, described ultrashort pulse fiber laser comprises: pumping source, fiber coupler, the first reflection-type optical fiber grating, gain fibre, the second reflection-type optical fiber grating and acousto-optic modulator; Pumping source connects the input port of described fiber coupler, the output port of described fiber coupler connects described first reflection-type optical fiber grating, described first reflection-type optical fiber grating is connected with described acousto-optic modulator by gain fibre, and light is by exporting after described second reflection-type optical fiber grating;
Wherein, described pumping source, fiber coupler, the first reflection-type optical fiber grating, gain fibre, the second reflection-type optical fiber grating and acousto-optic modulator are installed on a matrix respectively, described matrix is provided with parallel heat dissipation channel, described heat dissipation channel composition heat sinking array.
2. ultrashort pulse fiber laser as claimed in claim 1, it is characterized in that, described fiber coupler is formed by fused biconical taper.
3. ultrashort pulse fiber laser as claimed in claim 1, it is characterized in that, described pumping source is semiconductor laser, solid state laser, gas laser, fiber laser or Raman laser, and the scope exporting the central wavelength lambda of pump light is: 500nm≤λ≤1500nm.
4. ultrashort pulse fiber laser as claimed in claim 1, it is characterized in that, described gain fibre is ytterbium-doped double-cladded-layer monomode fiber.
5. ultrashort pulse fiber laser as claimed in claim 1, is characterized in that, described ultrashort pulse fiber laser also comprises light echo and eliminates parts, and described light echo is eliminated parts and is connected with described acousto-optic modulator.
6. ultrashort pulse fiber laser as claimed in claim 6, is characterized in that, described light echo is eliminated parts and comprised optical fiber and be coated in the refractive index matching layers on optical fiber end surface.
7. ultrashort pulse fiber laser as claimed in claim 1, it is characterized in that, described heat dissipation channel is the rectangular channel run through, and the height of described rectangular channel is less than the thickness of described matrix.
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| CN201410618159.XA CN104409949A (en) | 2014-11-05 | 2014-11-05 | Ultra-short pulse fiber laser |
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| CN201410618159.XA CN104409949A (en) | 2014-11-05 | 2014-11-05 | Ultra-short pulse fiber laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654828A (en) * | 2017-02-20 | 2017-05-10 | 绍兴文理学院 | Short pulse laser used for product component analysis and product component analysis method |
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| US20060007965A1 (en) * | 2004-07-12 | 2006-01-12 | Nikolai Tankovich | Passive Q-switch modulated fiber laser |
| CN201226061Y (en) * | 2008-05-13 | 2009-04-22 | 武汉锐科光纤激光器技术有限责任公司 | Acoustooptic modulator for high-power pulse optical fiber laser |
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| CN202395042U (en) * | 2011-12-26 | 2012-08-22 | 上海陆离光电科技有限公司 | LED (light-emitting diode) chip with heat-dissipating device |
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| US20060007965A1 (en) * | 2004-07-12 | 2006-01-12 | Nikolai Tankovich | Passive Q-switch modulated fiber laser |
| CN201226061Y (en) * | 2008-05-13 | 2009-04-22 | 武汉锐科光纤激光器技术有限责任公司 | Acoustooptic modulator for high-power pulse optical fiber laser |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106654828A (en) * | 2017-02-20 | 2017-05-10 | 绍兴文理学院 | Short pulse laser used for product component analysis and product component analysis method |
| CN106654828B (en) * | 2017-02-20 | 2019-02-05 | 绍兴文理学院 | Short-pulse laser and product composition analysis method for product composition analysis |
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Effective date of registration: 20160317 Address after: 215123 No. 1, Kai Jie street, Suzhou Industrial Park, Jiangsu Applicant after: Huang Wei Applicant after: Li Fang Applicant after: Chen Shenbao Applicant after: Yang Limei Applicant after: Zhang Weiwei Address before: 212300, No. 7-20, Zhongshan Road, Zhenjiang, Jiangsu, Danyang Applicant before: Danyang Juchen Photoelectricity Technology Co., Ltd. |
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Effective date of registration: 20160518 Address after: 241000 science and Technology Pioneering Center of three mountain Economic Development Zone, Wuhu, Anhui Applicant after: WUHU ANRUI LASER TECHNOLOGY CO., LTD. Address before: 215123 No. 1, Kai Jie street, Suzhou Industrial Park, Jiangsu Applicant before: Huang Wei Applicant before: Li Fang Applicant before: Chen Shenbao Applicant before: Yang Limei Applicant before: Zhang Weiwei |
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