CN103840357B - A kind of optical fiber laser of line polarized light output - Google Patents
A kind of optical fiber laser of line polarized light output Download PDFInfo
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- CN103840357B CN103840357B CN201210483462.4A CN201210483462A CN103840357B CN 103840357 B CN103840357 B CN 103840357B CN 201210483462 A CN201210483462 A CN 201210483462A CN 103840357 B CN103840357 B CN 103840357B
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Abstract
The present invention relates to the optical fiber laser of a kind of line polarized light output, it includes pumping source, resonator cavity and the polarizer, the described polarizer is located in resonator cavity, is provided with more than two gain fibres stretched in described resonator cavity, is provided with light path and connects assembly between adjacent two gain fibres.The present invention uses above structure, by common gain fibre and the use of the polarizer, it is achieved that the output of line polarized light, significantly reduce manufacturing cost, utilize folded form resonator cavity simultaneously, while obtaining high power laser light output, efficiently reduce the volume of laser instrument.
Description
Technical field
The present invention relates to optical fiber laser, the optical fiber laser of a kind of line polarized light output.
Background technology
The polarization of light has a wide range of applications in scientific research and daily life.Polarized light such as can be utilized to realize coherent detection, such as, utilize the stress distribution within interference analysis parts；The stereoscopic motion pictures that in life, we see etc. realize also with the polarization of light.
The acquisition pattern of polarized light has a variety of, such as utilizes Brewster's law, Nikkor prism, dicharoic crystal, wave plate etc..Polarized light is applied in optical communications, it is also contemplated that light holding of polarizability during transmission, and method primarily now is application polarization maintaining optical fibre, but polarization maintaining optical fibre cost is high, and the polarizability holding means therefore exploring price the cheapest is particularly important.
In the single-mode fiber of the symmetrical fibre core of preferably circle, two complete degeneracys of polarization mode, propagation constant is equal, there is not the chromatic dispersion problem of polarization mode.But in actual optical fiber, owing to the defect of optical fiber processing technique causes fiber core cross section to have a certain degree of ovality, or causing the anisotropy of optical fibre refractivity owing to the discordance of the thermal coefficient of expansion of material produces anisotropic stress on fiber cross-sections, the birefringence that this optical fiber structure itself exists is referred to as intrinsic birefringence.It addition, optical fiber is in bending, twisting, mould also can produce additional birefringence under the effect of the mechanical external forces such as pressure.On the other hand, usual optical fiber laser is in order to produce polarized light, and the polarization maintaining optical fibre gain medias that use, or addition Polarization Controller in resonator cavity, its cost is high or excessively complicated, is not easy to be applied in higher-wattage output laser more.
Export generally for the laser producing relatively high power, optical fiber laser needs longer gain fibre, longer gain fibre contradict with the miniaturization of laser instrument, intensive developing direction.
Summary of the invention
The invention aims to the optical fiber laser providing the line polarized light that a kind of low cost, volume are little and power is high to export.
To achieve these goals, the present invention adopts the following technical scheme that
The optical fiber laser of a kind of line polarized light output, it includes that pumping source, resonator cavity and the polarizer, the described polarizer are located in resonator cavity, is provided with more than two gain fibres stretched in described resonator cavity, is provided with light path and connects assembly between adjacent two gain fibres.
Described resonator cavity is made up of the first wafer and the second wafer；First wafer is located at the light exit side of pumping source, and the exiting surface of the first wafer is coated with total reflection film, and the bright finish that enters of the second wafer is coated with highly reflecting films；It is two single optical fiber calibrators and reflecting prism that described light path connects assembly, and the joint of single optical fiber calibrator connects with corresponding gain fibre, and the gain luminous reflectance in a single optical fiber calibrator is transitioned in another single optical fiber calibrator by reflecting prism；The described polarizer is located between the light exit side of the last item gain fibre and the second wafer.
Described resonator cavity is made up of the first wafer and the second wafer；First wafer is located at the light exit side of pumping source, and the exiting surface of the first wafer is coated with total reflection film, and the bright finish that enters of the second wafer is coated with highly reflecting films；It is two light deviation capillary tubies and reflecting mirror that described light path connects assembly, and the joint of light deviation capillary tube connects with corresponding gain fibre, and the gain luminous reflectance in a light deviation capillary tube is transitioned in another light deviation capillary tube by reflecting mirror；The described polarizer is located between the light exit side of the last item gain fibre and the second wafer.
It is double-fiber collimator that described light path connects assembly, two joints of described double-fiber collimator connect with two adjacent gain fibres respectively, the light incident side mouth inner surface of described double-fiber collimator is coated with total reflection film, and the gain luminous reflectance in a gain fibre is transitioned in adjacent gain fibre by this total reflection film；In described more than two gain fibres, the light incident side of Article 1 gain fibre connects the first single optical fiber calibrator, and the light incident side mouth inner surface of described first single optical fiber calibrator is coated with total reflection film；In described more than two gain fibres, the light exit side of the last item gain fibre is provided with the second single optical fiber calibrator, and the light incident side mouth outer surface of the second single optical fiber calibrator is coated with highly reflecting films；The highly reflecting films of the light incident side mouth outer surface of the total reflection film of light incident side mouth inner surface of described double-fiber collimator, the total reflection film of light incident side mouth inner surface of the first single optical fiber calibrator and the second single optical fiber calibrator constitute resonator cavity；The described polarizer is located between the light exit side of the last item gain fibre and the second single optical fiber calibrator；Described pumping source is located at the light incident side of the first single optical fiber calibrator.
The light incident side of described double-fiber collimator is additionally provided with pumping source.Light incident side at each double-fiber collimator sets a pumping source, can more effectively realize the output of high-power line polarized light.
Flashlight, to pump light full impregnated, is all-trans by the total reflection film of the exiting surface of described first wafer；The highly reflecting films output fraction of laser light entering bright finish of described second wafer.
The total reflection film of light incident side mouth inner surface of described double-fiber collimator, the first single optical fiber calibrator the total reflection film of light incident side mouth inner surface to pump light full impregnated, flashlight is all-trans；The highly reflecting films output fraction of laser light of the light incident side mouth outer surface of the second single optical fiber calibrator.
The present invention uses above technical scheme, by common gain fibre and the use of the polarizer, it is achieved that the output of line polarized light, significantly reduce manufacturing cost, utilize folded form resonator cavity simultaneously, while obtaining high power laser light output, efficiently reduce the volume of laser instrument.
Accompanying drawing explanation
The present invention is further detailed explanation below in conjunction with the accompanying drawings:
Fig. 1 is optical fiber laser scheme one structural representation of a kind of line polarized light of present invention output；
Fig. 2 is optical fiber laser scheme two structural representation of a kind of line polarized light of present invention output；
Fig. 3 is optical fiber laser scheme three structural representation of a kind of line polarized light of present invention output.
Detailed description of the invention
The present invention program one: according to Fig. 1, a kind of optical fiber laser of line polarized light output, it includes pumping source 101, resonator cavity and the polarizer 106, the described polarizer 106 is located in resonator cavity, it is provided with more than two gain fibres stretched 107 in described resonator cavity, is provided with light path between adjacent two gain fibres 107 and connects assembly.
Described resonator cavity is made up of the first wafer 102 and the second wafer 105；First wafer 102 is located at the light exit side of pumping source 101, and the exiting surface of the first wafer 102 is coated with total reflection film, and the bright finish that enters of the second wafer 105 is coated with highly reflecting films；It is two single optical fiber calibrators 103 and reflecting prism 104 that described light path connects assembly, the joint of single optical fiber calibrator 103 connects with corresponding gain fibre 107, and the gain luminous reflectance in a single optical fiber calibrator 103 is transitioned in another single optical fiber calibrator 103 by reflecting prism 104；The described polarizer 106 is located between the light exit side of the last item gain fibre 107 and the second wafer 105.
Flashlight, to pump light full impregnated, is all-trans by the total reflection film of the exiting surface of described first wafer 102；The highly reflecting films entering bright finish of the second wafer 105 are 99.5% to the reflectance of flashlight, and 0.5% flashlight becomes laser and exports through the second wafer 105.
Operation principle: the pump light of pumping source 101 injection enters resonator cavity through the first wafer 102, and pump light carries out vibration in resonator cavity and forms flashlight, and flashlight changes into line polarized light through the polarizer 106, finally exports from the second wafer 105.The described polarizer 106 can be the crystal meeting Brewster angle incidence.
Article two, gain fibre 107 more than is by using single optical fiber calibrator 103 and reflecting prism 104, achieve transition and light between adjacent two gain fibres 107 to connect, on the one hand while obtaining high power laser light output, efficiently reduce the volume of laser instrument, on the other hand the additional birefringence effect that gain fibre 107 produces is effectively eliminated because of mechanical external forces such as bending, twistings, it is ensured that the holding of linearly polarized laser.
The present invention program two: according to Fig. 2, a kind of optical fiber laser of line polarized light output, it includes pumping source 201, resonator cavity and the polarizer 206, the described polarizer 206 is located in resonator cavity, it is provided with more than two gain fibres stretched 207 in described resonator cavity, is provided with light path between adjacent two gain fibres 207 and connects assembly.
Described resonator cavity is made up of the first wafer 202 and the second wafer 205；First wafer 202 is located at the light exit side of pumping source 201, and the exiting surface of the first wafer 202 is coated with total reflection film, and the bright finish that enters of the second wafer 205 is coated with highly reflecting films；It is two light deviation capillary tubies 203 and reflecting mirror 204 that described light path connects assembly, the joint of light deviation capillary tube 203 connects with corresponding gain fibre 207, and the gain luminous reflectance in a light deviation capillary tube 203 is transitioned in another light deviation capillary tube 203 by reflecting mirror 204；The described polarizer 206 is located between the light exit side of the last item gain fibre 207 and the second wafer 205.
Flashlight, to pump light full impregnated, is all-trans by the total reflection film of the exiting surface of described first wafer 202；The highly reflecting films entering bright finish of the second wafer 205 are 99.5% to the reflectance of flashlight, and 0.5% flashlight becomes laser and exports through the second wafer 105.
Operation principle: the pump light of pumping source 201 injection enters resonator cavity through the first wafer 202, and pump light carries out vibration in resonator cavity and forms flashlight, and flashlight is converted into line polarized light through the polarizer 206, after export through the second wafer 205.The described polarizer 206 can be the crystal meeting Brewster angle incidence.
Article two, gain fibre more than 207 deviates capillary tube 203 and reflecting prism 204 by making to use up, achieve transition and light between adjacent two gain fibres 207 to connect, on the one hand while obtaining high power laser light output, efficiently reduce the volume of laser instrument, on the other hand the additional birefringence effect that gain fibre 207 produces is effectively eliminated because of mechanical external forces such as bending, twistings, it is ensured that the holding of linearly polarized laser.
The present invention program three: according to Fig. 3, a kind of optical fiber laser of line polarized light output, it includes pumping source 301, resonator cavity and the polarizer 306, the described polarizer 303 is located in resonator cavity, it is provided with more than two gain fibres stretched 302 in described resonator cavity, is provided with light path between adjacent two gain fibres 302 and connects assembly.
It is double-fiber collimator 304 that described light path connects assembly, two joints of described double-fiber collimator 304 connect with two adjacent gain fibres 302 respectively, the light incident side mouth inner surface of described double-fiber collimator 304 is coated with total reflection film, and the gain luminous reflectance in a gain fibre 302 is transitioned in adjacent gain fibre 302 by this total reflection film；In described more than two gain fibres 302, the light incident side of Article 1 gain fibre 302 connects has the first single optical fiber calibrator 305, the light incident side mouth inner surface of described first single optical fiber calibrator 305 to be coated with total reflection film；In described more than two gain fibres 302, the light exit side of the last item gain fibre 302 is provided with the second single optical fiber calibrator 306, and the light incident side mouth outer surface of the second single optical fiber calibrator 306 is coated with highly reflecting films；The highly reflecting films of the light incident side mouth outer surface of the total reflection film of light incident side mouth inner surface of described double-fiber collimator 304, the total reflection film of light incident side mouth inner surface of the first single optical fiber calibrator 305 and the second single optical fiber calibrator 306 constitute resonator cavity；The described polarizer 303 is located between the light exit side of the last item gain fibre 302 and the second single optical fiber calibrator 306；Described pumping source 301 is located at the light incident side of the first single optical fiber calibrator 305.
The light incident side of described double-fiber collimator 304 is additionally provided with pumping source 301.Light incident side also correspondence at each double-fiber collimator 304 sets a pumping source 301, can more effectively realize the output of high-power line polarized light.
Flashlight, to pump light full impregnated, is all-trans by the total reflection film of the light incident side mouth inner surface of described first single optical fiber calibrator 305；Flashlight, to pump light full impregnated, is all-trans by the total reflection film of the light incident side mouth inner surface of described double-fiber collimator 304；The highly reflecting films of the light incident side mouth outer surface of described second single optical fiber calibrator 306 are 99.5% to the reflectance of flashlight, and 0.5% flashlight becomes laser and exports through the second single optical fiber calibrator 306.
Operation principle: the pump light of pumping source 301 injection enters resonator cavity through the first single optical fiber calibrator 301 or double-fiber collimator 304, pump light carries out vibration in resonator cavity and forms flashlight, flashlight is converted into linearly polarized laser through the polarizer 303, after export through the second single optical fiber calibrator 306.The described polarizer 303 can be the crystal meeting Brewster angle incidence.
Use double-fiber collimator 304 and be coated with total reflection film at double-fiber collimator 304 light incident side mouth inner surface, achieve transition and light between adjacent two gain fibres 302 to connect, on the one hand while obtaining high power laser light output, efficiently reduce the volume of laser instrument, on the other hand the additional birefringence effect that gain fibre 302 produces is effectively eliminated because of mechanical external forces such as bending, twistings, it is ensured that the holding of linearly polarized laser.
Claims (6)
1. the optical fiber laser of a line polarized light output, it includes pumping source, resonator cavity and the polarizer, the described polarizer is located in resonator cavity, it is characterised in that: it is provided with more than two gain fibres stretched in described resonator cavity, is provided with light path between adjacent two gain fibres and connects assembly；Described resonator cavity is made up of the first wafer and the second wafer；First wafer is located at the light exit side of pumping source, and the exiting surface of the first wafer is coated with total reflection film, and the bright finish that enters of the second wafer is coated with highly reflecting films；It is two single optical fiber calibrators and reflecting prism that described light path connects assembly, and the joint of single optical fiber calibrator connects with corresponding gain fibre, and the gain luminous reflectance in a single optical fiber calibrator is transitioned in another single optical fiber calibrator by reflecting prism；The described polarizer is located between the light exit side of the last item gain fibre and the second wafer.
2. the optical fiber laser of a line polarized light output, it includes pumping source, resonator cavity and the polarizer, the described polarizer is located in resonator cavity, it is characterised in that: it is provided with more than two gain fibres stretched in described resonator cavity, is provided with light path between adjacent two gain fibres and connects assembly；Described resonator cavity is made up of the first wafer and the second wafer；First wafer is located at the light exit side of pumping source, and the exiting surface of the first wafer is coated with total reflection film, and the bright finish that enters of the second wafer is coated with highly reflecting films；It is two light deviation capillary tubies and reflecting mirror that described light path connects assembly, and the joint of light deviation capillary tube connects with corresponding gain fibre, and the gain luminous reflectance in a light deviation capillary tube is transitioned in another light deviation capillary tube by reflecting mirror；The described polarizer is located between the light exit side of the last item gain fibre and the second wafer.
The optical fiber laser of a kind of line polarized light the most according to claim 1 and 2 output, it is characterised in that: flashlight, to pump light full impregnated, is all-trans by the total reflection film of the exiting surface of described first wafer；The highly reflecting films output fraction of laser light entering bright finish of described second wafer.
4. the optical fiber laser of a line polarized light output, it includes pumping source, resonator cavity and the polarizer, the described polarizer is located in resonator cavity, it is characterised in that: it is provided with more than two gain fibres stretched in described resonator cavity, is provided with light path between adjacent two gain fibres and connects assembly；It is double-fiber collimator that described light path connects assembly, two joints of described double-fiber collimator connect with two adjacent gain fibres respectively, the light incident side mouth inner surface of described double-fiber collimator is coated with total reflection film, and the gain luminous reflectance in a gain fibre is transitioned in adjacent gain fibre by this total reflection film；In described more than two gain fibres, the light incident side of Article 1 gain fibre connects the first single optical fiber calibrator, and the light incident side mouth inner surface of described first single optical fiber calibrator is coated with total reflection film；In described more than two gain fibres, the light exit side of the last item gain fibre is provided with the second single optical fiber calibrator, and the light incident side mouth outer surface of the second single optical fiber calibrator is coated with highly reflecting films；The highly reflecting films of the light incident side mouth outer surface of the total reflection film of light incident side mouth inner surface of described double-fiber collimator, the total reflection film of light incident side mouth inner surface of the first single optical fiber calibrator and the second single optical fiber calibrator constitute resonator cavity；The described polarizer is located between the light exit side of the last item gain fibre and the second single optical fiber calibrator；Described pumping source is located at the light incident side of the first single optical fiber calibrator.
The optical fiber laser of a kind of line polarized light the most according to claim 4 output, it is characterised in that: the light incident side of described double-fiber collimator is additionally provided with pumping source.
The optical fiber laser of a kind of line polarized light the most according to claim 4 output, it is characterized in that: the total reflection film of light incident side mouth inner surface of described double-fiber collimator, the first single optical fiber calibrator the total reflection film of light incident side mouth inner surface to pump light full impregnated, flashlight is all-trans；The highly reflecting films output fraction of laser light of the light incident side mouth outer surface of the second single optical fiber calibrator.
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| CN201210483462.4A CN103840357B (en) | 2012-11-23 | 2012-11-23 | A kind of optical fiber laser of line polarized light output |
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| CN201210483462.4A CN103840357B (en) | 2012-11-23 | 2012-11-23 | A kind of optical fiber laser of line polarized light output |
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| CN103840357B true CN103840357B (en) | 2016-08-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6597494B2 (en) * | 2001-07-13 | 2003-07-22 | Fujikura Ltd. | Polarization maintaining optical fiber amplifier and optical amplifier |
| JP2003110502A (en) * | 2001-09-27 | 2003-04-11 | Toshiba Corp | Optical transmitting system |
| GB0327661D0 (en) * | 2003-11-28 | 2003-12-31 | Qinetiq Ltd | Optical Amplifier |
| KR100605927B1 (en) * | 2004-01-28 | 2006-08-01 | 삼성전자주식회사 | Metro wavelength division multiplexing network |
| CN202171658U (en) * | 2011-08-24 | 2012-03-21 | 福州高意通讯有限公司 | A connector and a combiner of high power optical fiber lasers |
| CN102332676A (en) * | 2011-10-09 | 2012-01-25 | 深圳市达为光电科技有限公司 | Mid-infrared fiber laser |
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Effective date of registration: 20170816 Address after: 518048 No. 2 Fenghuang Road, Futian Free Trade Zone, Shenzhen, Guangdong, Futian District Patentee after: Gaoyi communication (Shenzhen) Co., Ltd. Address before: No. 39 Fuxing Road, Jinan District, Fuzhou city of Fujian Province in 350000 Patentee before: Photop Technologies, Inc. |
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