CN107658685A - A kind of 1 micron of single frequency optical fiber laser - Google Patents
A kind of 1 micron of single frequency optical fiber laser Download PDFInfo
- Publication number
- CN107658685A CN107658685A CN201711011144.7A CN201711011144A CN107658685A CN 107658685 A CN107658685 A CN 107658685A CN 201711011144 A CN201711011144 A CN 201711011144A CN 107658685 A CN107658685 A CN 107658685A
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- China
- Prior art keywords
- optical fiber
- micron
- division multiplexer
- single frequency
- polarization controller
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06712—Polarising fibre; Polariser
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The present invention disclose 1 micron of single frequency optical fiber laser of one kind, including mode pump source (1) and the first wavelength division multiplexer (2), phase-shifted grating (3), the first Polarization Controller (4), the second wavelength division multiplexer (5) and the couplers of 3dB 1 × 2 (6) that are sequentially connected in series；Also include the second Polarization Controller (7) and Yb dosed optical fiber (8)；Second Polarization Controller (7) forms a filtering annular mirror with Yb dosed optical fiber (8), and the input of the filtering annular mirror is connected with the output end of the couplers of 3dB 1 × 2 (6).1 micron of single frequency optical fiber laser of the present invention, high conversion efficiency, mode hopping or more longitudinal mode oscillatory occurences are effectively suppressed.
Description
Technical field
The invention belongs to fiber laser technology field, particularly a kind of high conversion efficiency, mode hopping or the vibration of more longitudinal modes are existing
As 1 micron of single frequency optical fiber laser being effectively suppressed.
Background technology
Optical fiber laser is the laser by the use of rear-earth-doped glass fibre as gain media, and all-fiber structure makes light
Fibre laser has the characteristics of compact-sized, efficiency high, power stability.Single frequency optical fiber laser refers to swashing for only a kind of frequency
Light device, compared with legacy multimode fiber laser, there is the significant laser characteristics such as line width, high coherence, low noise.Especially
1 μm of (micron) single frequency optical fiber laser, laser radar, light spectrum image-forming, spatially coherent light communication aspects have it is wide before
Scape.
In the method that single-frequency is realized with Linear-Cavity, including DBR types and DFB types, existing 1 μm of (micron) single frequency fiber laser
Device such as Chinese invention patent application " single-frequency single-polarization liner cavity ytterbium-doping optical fiver " (application number：It is 200810117745.0 public
Open day：It is 2009-01-28) described, including diode-end-pumped source, single-mode fiber grating assembly, light sensitivity stress birfringence
Mix ytterbium polarization maintaining optical fibre component and single-mode polarization maintaining fiber；It is or " a kind of with 975 nanometers of single frequency fibers that ytterbium silica fibre is mixed with pumping
Laser " (application number：201420127732.2 publication date：It is 2014-11-05) described, including the same band pump lasers of 915nm,
Optical fibre wavelength division multiplexer, high reflectance Fiber Bragg Grating FBG, mix ytterbium silica fibre, antiradar reflectivity Fiber Bragg Grating FBG and defeated
Go out optical fiber.
Above-mentioned 1 μm of (micron) single frequency optical fiber laser mixes ytterbium light by being then based on simple Linear-Cavity DBR optical fiber lasers
Fine typically only 5cm length, such Ultrashort cavity have that conversion efficiency is low, frequency selecting by grating more longitudinal modes vibrations easily occurs and mode hopping shows
As the problem of.
The content of the invention
It is an object of the invention to provide a kind of 1 micron of single frequency optical fiber laser, high conversion efficiency, mode hopping or more longitudinal modes shake
Phenomenon is swung to be effectively suppressed.
The technical solution for realizing the object of the invention is：
A kind of 1 micron of single frequency optical fiber laser, including mode pump source 1 and be sequentially connected in series the first wavelength division multiplexer 2, phase
Shifted raster 3, the first Polarization Controller 4, the second wavelength division multiplexer 5 and the couplers 6 of 3dB 1 × 2；The hair in the mode pump source 1
Penetrate the input rectified to the first wavelength division multiplexer 2；
Also include the second Polarization Controller 7 and Yb dosed optical fiber 8；Second Polarization Controller 7 and the composition of Yb dosed optical fiber 8 one
Individual filtering annular mirror, the input of the filtering annular mirror are connected with the output end of the couplers 6 of 3dB 1 × 2.
Compared with prior art, its remarkable advantage is the present invention：
1st, high conversion efficiency：Fiber grating and Yb dosed optical fiber are merged by the phase shifted distributed feedback formula grating of λ/4, both real
Show wavelength selection, reduced the splice loss, splice attenuation of grating and doped fiber again, substantially increase the wavelength convert of optical fiber laser
Efficiency；
2nd, mode hopping and the vibration of more longitudinal modes are effectively suppressed：Filtering annular mirror makes single-frequency output stability stronger, mode hopping occurs and shows
The probability of elephant substantially reduces.
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 is the structural representation of 1 micron of single frequency optical fiber laser of the invention.
In figure, 1 mode pump source, 2 first wavelength division multiplexers, 3 phase-shifted gratings, 4 first Polarization Controllers, 5 second wavelength-divisions
Multiplexer, the couplers of 6 3dB 1 × 2,7 second Polarization Controllers, 8 Yb dosed optical fibers.
Embodiment
As shown in figure 1,1 micron of single frequency optical fiber laser of the invention, including mode pump source 1 and the first wave that is sequentially connected in series
Division multiplexer 2, phase-shifted grating 3, the first Polarization Controller 4, the second wavelength division multiplexer 5 and the couplers 6 of 3dB 1 × 2；The single mode
The input of the first wavelength division multiplexer of transmitting terminal face 2 of pumping source 1；
Also include the second Polarization Controller 7 and Yb dosed optical fiber 8；
Second Polarization Controller 7 forms a filtering annular mirror, the input of the filtering annular mirror with Yb dosed optical fiber 8
End is connected with the output end of the couplers 6 of 3dB 1 × 2.
Preferably, the mode pump source 1 is the mode pump source that launch wavelength is 980nm.
Preferably, first wavelength division multiplexer 2, the second wavelength division multiplexer 5 are 1064/980 wavelength division multiplexer.
The 980nm ends of second wavelength division multiplexer 5 are used to export unnecessary pump light, in order to ensure to filter mixing in annular mirror
Ytterbium optical fiber is in non-pump state.
Preferably, it by centre wavelength is 1064nm that the phase-shifted grating 3, which is, the grating of phase shift λ/4 is engraved in ultraviolet
The phase shifted distributed feedback formula grating of λ on Yb dosed optical fiber/4.
Preferably, second Polarization Controller 7 is identical with the structure of the first Polarization Controller 4.
First Polarization Controller 4 by rotate with pressure operation the optical fiber that wherein passes through can be produced laterally and longitudinally should
Power, make the polarization state difference of light transmitted in opposite directions, and then suppress effects of spatial.
The structure of second Polarization Controller 7 is identical with the first Polarization Controller 4, but its effect is the light for making to transmit in opposite directions
Polarization state it is identical, the dynamic raster that the light propagated in opposite directions in Yb dosed optical fiber is formed can eliminate more longitudinal modes vibrations.
The operation principle of the present invention is as follows：
When pumping source launches 980nm laser, into the 980nm ends of the one 1064/980 wavelength division multiplexer,
Due to having used the phase shifted distributed feedback formula grating of λ/4,980nm light changes into 1064nm light.Form single-frequency light
The main reason for have three：1st, the phase shifted distributed feedback formula grating of λ/4 has carried out preliminary wavelength selective 2, the first Polarization Controller
Make the polarization state of light wave propagated in opposite directions vertical, destroy effects of spatial condition 3, filtering annular mirror contains the second polarization
Controller and the Yb dosed optical fiber of non-pumping, light wave are propagated in opposite directions in annular mirror, and the second Polarization Controller makes the polarization state of light wave
It is parallel, the light of some specific frequency is formed standing wave in the Yb dosed optical fiber of non-pumping, standing wave is stable in Yb dosed optical fiber
Propagate, the light propagation of other frequencies can be forbidden, that is, form a dynamic raster.
Embodiment 1
With reference to Fig. 1, a kind of new structure of 1 micron of single frequency optical fiber laser in the present embodiment, its structure is by 980nm pumpings
Source 1, the one 1064/980 wavelength division multiplexer 2, the phase shifted distributed feedback formula grating 3 of λ/4, the first Polarization Controller the 4, the 2nd 1064/
980 wavelength division multiplexers 5,3dB 1*2 couplers 6, the second Polarization Control 7 and Yb dosed optical fiber 8 form., will using optical fiber splicer
The 980nm ends welding of pumping source output terminal and the one 1064/980 wavelength division multiplexer 2, then by the phase shift point of its common end and λ/4
One end welding of cloth reaction type grating 3, the other end optical fiber of the phase shifted distributed feedback formula grating 3 of λ/4 is penetrated into the first Polarization Control
After device 4, the common ends welding with the 2nd 1064/980 wavelength division multiplexer 5, the 1064nm of the 2nd 1064/980 wavelength division multiplexer 5
End and the input welding of 3dB 1*2 couplers 6, the both ends of 3dB 1*2 couplers 6 respectively penetrate the second Polarization Control 7, with mixing
Ytterbium optical fiber 8 carries out welding, and the length of wherein Yb dosed optical fiber 8 is about 8m, and the output end of whole optical fiber laser is the 1st
The 1064nm ends of 980 wavelength division multiplexers 2.980nm pumping sources 1 are opened, suitable size is arrived into pump power regulation, changes two
The longitudinal direction of Polarization Controller and lateral angles, suitable position is adjusted to, can realize that single-frequency exports.
The invention has the advantages that wavelength conversion efficiency is high, all optical fibre structure is compact.The single-frequency laser stability of output is good, more
Longitudinal mode vibration is suppressed well with Mode-hopping Phenomena, and its superior coherence has boundless in spatially coherent light communication aspects
Application prospect.
Claims (5)
- A kind of 1. 1 micron of single frequency optical fiber laser, it is characterised in that：Including mode pump source (1) and the first wavelength division multiplexer (2) being sequentially connected in series, phase-shifted grating (3), the first Polarization Controller (4), the second wavelength division multiplexer (5) and the couplers of 3dB 1 × 2 (6)；The transmitting terminal face first wave of the mode pump source (1) The input of division multiplexer (2)；Also include the second Polarization Controller (7) and Yb dosed optical fiber (8)；Second Polarization Controller (7) forms a filtering annular mirror, the input of the filtering annular mirror with Yb dosed optical fiber (8) End is connected with the output end of the couplers of 3dB 1 × 2 (6).
- 2. according to claim 1 micron of single frequency optical fiber laser, it is characterised in that：The mode pump source (1) is the mode pump source that launch wavelength is 980nm.
- 3. 1 micron of single frequency optical fiber laser according to claim 2, it is characterised in that：First wavelength division multiplexer (2), the second wavelength division multiplexer (5) are 1064/980 wavelength division multiplexer.
- 4. 1 micron of single frequency optical fiber laser according to claim 3, it is characterised in that：It by centre wavelength is 1064nm that the phase-shifted grating (3), which is, the grating of phase shift λ/4 is engraved on Yb dosed optical fiber with ultraviolet The phase shifted distributed feedback formula grating of λ/4.
- 5. according to claim 1 micron of single frequency optical fiber laser, it is characterised in that：Second Polarization Controller (7) is identical with the first Polarization Controller (4) structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711011144.7A CN107658685A (en) | 2017-10-26 | 2017-10-26 | A kind of 1 micron of single frequency optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711011144.7A CN107658685A (en) | 2017-10-26 | 2017-10-26 | A kind of 1 micron of single frequency optical fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107658685A true CN107658685A (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711011144.7A Pending CN107658685A (en) | 2017-10-26 | 2017-10-26 | A kind of 1 micron of single frequency optical fiber laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668684A (en) * | 2019-03-06 | 2020-09-15 | 绍兴钠钇光电有限公司 | Ultra-narrow bandwidth filter and high-power single longitudinal mode narrow linewidth optical fiber laser |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6788713B1 (en) * | 1998-11-17 | 2004-09-07 | The University Of Sydney | Reduction of pulsations in DFB lasers |
| CN101425655A (en) * | 2007-10-31 | 2009-05-06 | 中国科学院半导体研究所 | Apparatus for distributed feedback optical fiber laser frequency modulation and denoising |
| US7627006B2 (en) * | 2003-09-18 | 2009-12-01 | Universite Laval | Multi-wavelength laser source |
| CN101950914A (en) * | 2010-09-06 | 2011-01-19 | 中国科学院上海光学精密机械研究所 | Wavelength Tunable Single Longitudinal Mode Distributed Feedback Fiber Laser |
| CN102185240A (en) * | 2011-04-07 | 2011-09-14 | 中国科学院半导体研究所 | High-power low-noise single-frequency optical fiber laser |
-
2017
- 2017-10-26 CN CN201711011144.7A patent/CN107658685A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6788713B1 (en) * | 1998-11-17 | 2004-09-07 | The University Of Sydney | Reduction of pulsations in DFB lasers |
| US7627006B2 (en) * | 2003-09-18 | 2009-12-01 | Universite Laval | Multi-wavelength laser source |
| CN101425655A (en) * | 2007-10-31 | 2009-05-06 | 中国科学院半导体研究所 | Apparatus for distributed feedback optical fiber laser frequency modulation and denoising |
| CN101950914A (en) * | 2010-09-06 | 2011-01-19 | 中国科学院上海光学精密机械研究所 | Wavelength Tunable Single Longitudinal Mode Distributed Feedback Fiber Laser |
| CN102185240A (en) * | 2011-04-07 | 2011-09-14 | 中国科学院半导体研究所 | High-power low-noise single-frequency optical fiber laser |
Non-Patent Citations (3)
| Title |
|---|
| JIA-LIN CHEN等: "Study on the characteristics of the λ/4 phase-shift DFB Yb-doped fiber lasers", 《PROCEEDINGS OF SPIE》 * |
| SHENGHONG HUANG等: "Wavelength tunable single frequency fiber laser based on linear cavity with loop mirror filter", 《ADVANCED SOLID-STATE PHOTONICS》 * |
| 陆宝乐: "单频掺镱光纤激光器及其主振荡功率放大实验研究", 《中国博士学位论文全文数据库 信息科技辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668684A (en) * | 2019-03-06 | 2020-09-15 | 绍兴钠钇光电有限公司 | Ultra-narrow bandwidth filter and high-power single longitudinal mode narrow linewidth optical fiber laser |
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