CN106602395A - Ultra-wideband random fiber laser based on multi-wavelength pumping - Google Patents
Ultra-wideband random fiber laser based on multi-wavelength pumping Download PDFInfo
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- CN106602395A CN106602395A CN201710043919.2A CN201710043919A CN106602395A CN 106602395 A CN106602395 A CN 106602395A CN 201710043919 A CN201710043919 A CN 201710043919A CN 106602395 A CN106602395 A CN 106602395A
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- 239000000835 fiber Substances 0.000 title claims abstract description 37
- 238000005086 pumping Methods 0.000 title claims abstract description 33
- 238000001228 spectrum Methods 0.000 claims abstract description 16
- 239000004065 semiconductor Substances 0.000 claims abstract description 3
- 239000007787 solid Substances 0.000 claims abstract description 3
- 239000013307 optical fiber Substances 0.000 claims description 33
- 238000003466 welding Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000003595 spectral effect Effects 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004038 photonic crystal Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009022 nonlinear effect Effects 0.000 description 4
- 238000001069 Raman spectroscopy Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- 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
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06741—Photonic crystal fibre, i.e. the fibre having a photonic bandgap
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094042—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser
- H01S3/094046—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a fibre laser of a Raman fibre laser
-
- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
-
- 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
- H01S3/30—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
- H01S3/302—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects in an optical fibre
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Lasers (AREA)
Abstract
The invention relates to an ultra-wideband random fiber laser based on multi-wavelength pumping. The laser comprises a multi-wavelength pumping source, an ultra-wideband coupler and a passive fiber. The multi-wavelength pumping source can be a conventional fiber laser, and can also be a fiber coupled semiconductor laser or solid laser. The line width of single-wavelength lasers is between 1nm and 5nm. The number of wavelengths is determined according to the actual demand. The wavelength interval is between 5nm and 15nm. The single-wavelength lasers are produced through a wavelength division multiplexer or direct cascading. If direct cascading is employed, the longer-wavelength laser is before the shorter-wavelength laser. The ultra-wideband coupler can ensure that the pump wavelength and a produced signal pump pass at low loss. Compared with the existing random fiber laser, random fiber laser of wider spectrum and higher power can be produced.
Description
Technical field
The invention belongs to Fiber laser technology field, and in particular to a kind of random optical fiber of the ultra broadband based on multi wavelength pumping
Laser instrument.
Background technology
Random fiber laser provides accidental distributed feedback using Rayleigh scattering faint in passive optical fiber, and its gain comes
Come from the nonlinear effect of stimulated Raman scattering (SRS) in passive optical fiber, thus " resonance free chamber " can be realized, " without gain light
Laser output under the conditions of fibre ".The random fiber laser of early stage does not need any feedback devices such as grating, therefore is referred to as
" standard-sized sheet chamber " structure random fiber laser.In recent years, researcher proposed by introducing high reflective grid in one end of laser instrument,
" partly begin to speak " structure, theoretical and experimental study shows, " partly beginning to speak " structure can reduce out photo threshold, improving laser device effect
Rate, and the Random Laser of transmitted in both directions in " standard-sized sheet chamber " structure originally is exported from single-end optical fiber, advantageously should in reality
With.Due to providing random feedback using the Rayleigh scattering in Disordered Media, it is not necessary to which strict cavity resonator structure, random optical fiber swashs
Light utensil has simple structure, without longitudinal mode, high conversion efficiency, light spectrum smoothing the features such as, be the study hotspot of laser technology field.
The random optical-fiber laser research of early stage is main in the face of fields such as communication, sensings, generally to the output light of Random Laser
Spectral width does not have a particular/special requirement, but for illuminating, be shown as the fields such as picture, photoelectronic warfare, it is desirable to obtain as wide as possible defeated
Go out spectrum, but the 3dB spectrum widths of general random laser output are both less than 5nm, it is impossible to meet actual demand.On the other hand, at present
Using some filtering devices can realize relatively wide wave-length coverage Random Laser output, but be all used it is complex
Filtering device, output wavelength is discrete form, and these devices cannot bear high power, therefore power output is relatively low,
Limit practical application.
From SRS effects in passive optical fiber, in silicon glass fiber, Random Laser increases for the gain of random fiber laser
Generally there is a fixed frequency interval in beneficial spike length, i.e. 13.2THz, therefore in silicon glass fiber with pumping wavelength, with
The output wavelength of machine optical-fiber laser is relative to be determined.Because there is no real upper laser level, the increasing of its centre wavelength in SRS processes
Benefit cannot be converted into the laser of other wavelength similar to rare-earth ion-doped gain by the transmission of other energy levels, therefore, laser light
The broadening of spectrum places one's entire reliance upon the effect of nonlinear effect and dispersion.But if the strong of nonlinear effect is strengthened merely
Degree, will necessarily reduce the threshold value of second order Random Laser generation, so as to limit the lifting of single order Random Laser power again.
The content of the invention
The purpose of the present invention is to propose to the ultra-wide spectrum optical fibre laser implementation of base multi wavelength pumping, with break through in the past with
The narrower restriction of output spectrum in machine optical fiber laser, further widens the output spectrum width of random fiber laser.It thinks substantially
Think be：Based on the light source pumping random fiber laser of multiple certain wavelength intervals, tied simultaneously using the spectral characteristic of pumping source
The spectrum widening of Random Laser itself is closed, the Random Laser output of continuous ultra broadband is produced.Its constitute substantially including：Multiple wavelength pump
Pu source, passive optical fiber and ultra broadband coupler, the wherein output end of multi wavelength pumping source (1) and ultra broadband coupler (2)
One end is connected by the way of welding, and the common port of ultra broadband coupler (2) is with passive optical fiber (3) by the way of welding
Connected；The other end sharping of passive optical fiber (3) is exported with suppressing this facet feedback, and the forward direction as Random Laser
End；The other end sharping of ultra broadband coupler (2), as the backward output end of random fiber laser.
Now to each part the characteristics of, is described as follows：
Multi wavelength pumping source：It can be the semiconductor laser or solid of conventional optical fiber laser, or fiber coupling
Body laser.Laser is exported by fiber coupling, and the diameter of fiber core is consistent with the diameter of passive fiber core described hereinafter, light
The numerical aperture of long and slender core is consistent with the numerical aperture of passive fiber core described hereinafter, and the specific centre wavelength of laser instrument is without spy
Provisioning request, laser instrument is single wavelength laser instrument, and live width is taken between 1nm to 5nm, and the quantity of laser instrument is true according to the actual requirements
Fixed, wavelength interval is taken between 5nm to 15nm, polarization characteristic does not have particular/special requirement；
Above-mentioned laser instrument is produced by the way of wavelength division multiplexer or directly cascade, according to the mode of directly cascade, cascade
Order is long wavelength laser front, and short wavelength laser is rear；
Passive optical fiber：The silica-based optical fiber or photonic crystal fiber of routine, is made up of fibre core, covering and coat.Pump light
Transmit in fibre core with the laser for producing, make passive optical fiber that there is larger nonlinear factor and less by Theoretical Design
Dispersion；
Ultra broadband coupler：There is higher transmitance in pump-wavelength range and the spectral region for intentionally getting, can guarantee that sharp
The signal pumping of light device wavelength and generation is all low-loss to be passed through, it should be pointed out that the fiber coupler master of current ultra broadband
Space Coupling, lens reflecting structure are based on, and for the coating technique of 100nm or so width is very ripe.
The present invention proposes a kind of ultra-wide spectrum random fiber laser of multi wavelength pumping.Compared with conventional art, the present invention
The narrower restriction of Random Laser output spectrum is breached, wider spectrum width, more power output is capable of achieving, with advanced and practical
Property.
Description of the drawings
Fig. 1 is structural representation of the present invention based on the ultra broadband random fiber laser of multi wavelength pumping,
Fig. 2 is the structural representation of one of the producing method in multi wavelength pumping source of the present invention,
Fig. 3 is the structural representation of the two of the producing method in multi wavelength pumping source of the present invention.
Specific embodiment
The present invention is further described with reference to diagram：
Ultra broadband random fiber laser shown in Fig. 1 includes multi wavelength pumping source (1), ultra broadband coupler (2) and passive light
3 parts such as fine (3).Wherein one end of the output end of pumping source (1) and ultra broadband coupler (2) by the way of welding in addition
Connection, fusion point is (4), and the common port of ultra broadband coupler (2) is connected with passive optical fiber (3) by the way of welding,
Fusion point is (5)；The other end sharping (7) of passive optical fiber (3) is to suppress facet feedback and defeated as the forward direction of Random Laser
Go out end.Another free end sharping (6) of ultra broadband coupler (2), as the backward output end of random fiber laser.
Fig. 2 show the one of which in multi wavelength pumping source (1) and produces structure.Single wavelength optical fiber laser (81),
(82) ..., each input arm connection that (8N) passes through wavelength division multiplexer (9), is connected by the mode of welding, and fusing point is respectively
(41), (42) ..., (4N), finally export from the common port of wavelength division multiplexer (9).Single wavelength optical fiber laser (81),
(82) ..., between 5nm to 15nm, each laser bandwidth is between 1nm to 5nm for the wavelength interval of (8N).
Fig. 3 show the another kind of of multi wavelength pumping source (1) and produces structure.Single wavelength optical fiber laser (81),
(82) ..., (8N) cascade welding by way of connect, fusing point be respectively (51), (52) ..., (5N), the order of connection
It is long wavelength laser front, short wavelength laser is rear.Single wavelength optical fiber laser (81), between (82) ..., the wavelength of (8N)
It is interposed between 5nm to 15nm, each laser bandwidth is between 1nm to 5nm.
The corresponding specific embodiment of schematic structural view of the invention is given below：
For the ultra-wide spectrum random fiber laser shown in Fig. 1, multi wavelength pumping source (1) be wavelength be respectively 1070nm,
The ytterbium-doping optical fiber laser of 1080nm, 1090nm, 1100nm, is exported all the way using the structure synthesis shown in Fig. 2, and single laser is defeated
Go out power and be 10 watts, 3dB live widths are 3nm.Multi wavelength pumping source (1) synthesized using mode shown in Fig. 2 after with ultra broadband coupling
Clutch (2) welding.Ultra broadband coupler common port and core diameter are 10 μm, numerical aperture is quilt that 0.06, length is 800m
One end welding of dynamic optical fiber (3), the other end sharping (7) of passive optical fiber (3) is used as output end.It is faint in passive optical fiber
The accidental distributed feedback that provides of Rayleigh scattering and the gain that provides of stimulated Raman scattering, be capable of achieving 1120nm to 1160nm
Ultra broadband single order Raman light output；Due to spectrum widening effect caused by nonlinear effect in multi wavelength pumping source (1) and optical fiber,
There can be Random Laser to produce in the wide spectral range of 1120nm to 1160nm, this is the most wide spectrum that at present wave band is produced
The Random Laser of scope.
Claims (3)
1. a kind of ultra broadband random fiber laser based on multi wavelength pumping, including multi wavelength pumping source（1）, ultra broadband coupling
Device（2）With passive optical fiber（3）, the multi wavelength pumping source（1）Can be conventional optical fiber laser, or fiber coupling
Semiconductor laser or solid state laser, using pumping source spectral characteristic combine Random Laser itself spectrum widening,
Produce the Random Laser output of continuous ultra broadband, it is characterised in that：
Multi wavelength pumping source（1）Output end and ultra broadband coupler（2）One end connected by the way of welding, ultra-wide
Band coupler（2）Common port and passive optical fiber（3）Connected by the way of welding；Passive optical fiber（3）The other end cut
Oblique angle to suppress this facet feedback, and as the forward direction output end of Random Laser；Ultra broadband coupler（2）The other end cut tiltedly
Angle, as the backward output end of random fiber laser；
The laser instrument is single wavelength laser instrument, and live width is between 1nm to 5nm, and the quantity of laser instrument is true according to the actual requirements
Fixed, laser wavelength is spaced between 5nm to 15nm,
The laser instrument is produced by the way of wavelength division multiplexer or directly cascade, according to the mode of directly cascade, cascade
Order is long wavelength laser front, and short wavelength laser is rear.
2. a kind of ultra broadband random fiber laser based on multi wavelength pumping according to claim 1, the ultra broadband
Coupler（2）The signal pumping of guarantee pumping wavelength and generation is all low-loss to be passed through.
3. a kind of ultra broadband random fiber laser based on multi wavelength pumping according to claim 1, the passive light
It is fine（3）For traditional quartz glass optical fiber or photonic crystal fiber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043919.2A CN106602395A (en) | 2017-01-19 | 2017-01-19 | Ultra-wideband random fiber laser based on multi-wavelength pumping |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043919.2A CN106602395A (en) | 2017-01-19 | 2017-01-19 | Ultra-wideband random fiber laser based on multi-wavelength pumping |
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| Publication Number | Publication Date |
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| CN106602395A true CN106602395A (en) | 2017-04-26 |
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| CN201710043919.2A Pending CN106602395A (en) | 2017-01-19 | 2017-01-19 | Ultra-wideband random fiber laser based on multi-wavelength pumping |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681423A (en) * | 2017-09-28 | 2018-02-09 | 深圳市杰普特光电股份有限公司 | Optical fiber laser |
| CN111900603A (en) * | 2020-07-15 | 2020-11-06 | 太原理工大学 | Chaotic laser light source device capable of realizing hectowatt chaotic laser output |
| CN111900604A (en) * | 2020-07-15 | 2020-11-06 | 太原理工大学 | Hectowatt chaotic laser source device based on random fiber laser |
| CN111900601A (en) * | 2020-07-15 | 2020-11-06 | 太原理工大学 | High-power tunable chaotic laser light source device |
| CN112213813A (en) * | 2019-07-10 | 2021-01-12 | 桂林电子科技大学 | Ultra-wideband high-gain multi-core optical fiber light source |
| CN113054520A (en) * | 2021-03-12 | 2021-06-29 | 中国人民解放军国防科技大学 | Pure visible light super-continuum spectrum light source based on semiconductor laser diode pumping |
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| CN104617470A (en) * | 2015-01-12 | 2015-05-13 | 中国人民解放军国防科学技术大学 | Thulium-doped optical fiber laser pump method utilizing erbium-doped random optical fiber laser |
| CN106299988A (en) * | 2016-10-28 | 2017-01-04 | 电子科技大学 | A kind of cascaded-output fiber Raman accidental laser |
| CN206558873U (en) * | 2017-01-19 | 2017-10-13 | 中国人民解放军国防科学技术大学 | A kind of ultra wide band random fiber laser based on multi wavelength pumping |
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| WO2000005622A1 (en) * | 1998-07-23 | 2000-02-03 | The Furukawa Electric Co., Ltd. | Raman amplifier, optical repeater, and raman amplification method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681423A (en) * | 2017-09-28 | 2018-02-09 | 深圳市杰普特光电股份有限公司 | Optical fiber laser |
| CN112213813A (en) * | 2019-07-10 | 2021-01-12 | 桂林电子科技大学 | Ultra-wideband high-gain multi-core optical fiber light source |
| CN111900603A (en) * | 2020-07-15 | 2020-11-06 | 太原理工大学 | Chaotic laser light source device capable of realizing hectowatt chaotic laser output |
| CN111900604A (en) * | 2020-07-15 | 2020-11-06 | 太原理工大学 | Hectowatt chaotic laser source device based on random fiber laser |
| CN111900601A (en) * | 2020-07-15 | 2020-11-06 | 太原理工大学 | High-power tunable chaotic laser light source device |
| CN111900604B (en) * | 2020-07-15 | 2021-07-27 | 太原理工大学 | Hectowatt chaotic laser source device based on random fiber laser |
| CN111900603B (en) * | 2020-07-15 | 2021-07-27 | 太原理工大学 | Chaotic laser light source device capable of realizing hectowatt chaotic laser output |
| CN111900601B (en) * | 2020-07-15 | 2021-07-27 | 太原理工大学 | High-power tunable chaotic laser light source device |
| CN113054520A (en) * | 2021-03-12 | 2021-06-29 | 中国人民解放军国防科技大学 | Pure visible light super-continuum spectrum light source based on semiconductor laser diode pumping |
| CN113054520B (en) * | 2021-03-12 | 2021-10-26 | 中国人民解放军国防科技大学 | Pure visible light super-continuum spectrum light source based on semiconductor laser diode pumping |
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