CN106253041A - A kind of all-fiber mid-infrared ultra-short pulse laser emitter - Google Patents
A kind of all-fiber mid-infrared ultra-short pulse laser emitter Download PDFInfo
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- CN106253041A CN106253041A CN201610913937.7A CN201610913937A CN106253041A CN 106253041 A CN106253041 A CN 106253041A CN 201610913937 A CN201610913937 A CN 201610913937A CN 106253041 A CN106253041 A CN 106253041A
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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
- H01S3/06716—Fibre compositions or doping with active elements
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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
- H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
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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
- H01S3/06754—Fibre amplifiers
- H01S3/06758—Tandem amplifiers
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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
- H01S3/06791—Fibre ring lasers
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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
- H01S3/09—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
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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
- H01S3/09—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
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Abstract
The present invention relates to mid-infrared laser technical field, particularly relate to a kind of all-fiber mid-infrared ultra-short pulse laser emitter, including the laser pumping source being sequentially connected with, optical fiber circulator, fluoride Raman fiber, fluoride micro-nano fiber, the 5th fiber grating, pump combiner, mix Dy3+Chalcogenide fiber；First port tail optical fiber of laser pumping source tail optical fiber welding optic fibre circulator, 3rd port tail optical fiber welding fluoride Raman fiber head end of optical fiber circulator, head end is inscribed the second fiber grating, the 3rd fiber grating, tail end is inscribed the 4th fiber grating, tail end welding fluoride micro-nano fiber, second port tail optical fiber of the pumping input tail optical fiber welding optic fibre circulator of pump combiner, flashlight input tail optical fiber welding the 5th fiber grating of pump combiner, 5th fiber grating welding fluoride micro-nano fiber, Dy is mixed in the exit end tail optical fiber welding of pump combiner3+Chalcogenide fiber, mixes Dy3+Chalcogenide fiber outfan is 8 degree of cutting angles, exports 4.58 mum wavelength ultra-short pulse lasers.
Description
Technical field
The present invention relates to mid-infrared laser technical field, particularly relate to a kind of all-fiber mid-infrared ultra-short pulse laser and launch
Device.
Background technology
2～20 μm middle-infrared bands not only contain two important propagation in atmosphere windows (3～5 μm and 8～13 μm), with
Time also covers the absworption peak of numerous important molecule and atom, therefore, operation wavelength is positioned at the lasing light emitter in this region and leads at air
The numerous areas such as letter, spectrographic detection, materials processing, infrared counteraction all have important application prospect, and wherein, mid-infrared is super continuous
Lasing light emitter receives significant attention in recent years because of the bandwidth of operation with ultra-wide.Tufts Univ USA P.Domachuk in 2008 etc.
The super continuous laser that people utilizes 1550nm femtosecond laser pumping tellurate photonic crystal fiber to achieve 0.789～4.87 μm produces
Raw；2009, Japan Toyota Industries university tip photon technology research center G.S.Chen et al. utilized 1450nm femtosecond laser
Pumping fluoride fiber creates the super continuous laser covering 6.28 μm middle infrared wavelengths from ultraviolet.Compare tellurate optical fiber and
Fluoride fiber, chalcogenide fiber has higher nonlinear refractive index and longer infrared transmission border, therefore, particularly suitable
Continuous laser is surpassed in the mid-infrared producing wavelength longer.2014, Denmark University of Science and Technology C.R.Petersen et al. was utilized respectively
The chalcogenide fiber of the ultra-short pulse laser pumping ultra-high numerical aperture of 4.5 μm and 6.3 mum wavelengths, it is achieved that 1.5～11.7 μm
Surpassing continuous laser with the mid-infrared of 1.4～13.3 μm to produce, wherein the ultra-short pulse laser of 4.5 μm and 6.3 mum wavelengths is to pass through
The Solid State Laser difference frequency amplified of warbling optical parameter produces；2016, in the tip photon technology research of Toyota Industries university of Japan
Heart T.L.Cheng et al. is by using the zero dispersion plateau cure thing of 9.8 μm ultra-short pulse laser pump optimizations of longer wavelength
Optical fiber achieves the mid-infrared of 2.0～15.1 μm and surpasses continuous laser output, and wherein 9.8 μm ultra-short pulse laser sources still use beche-de-mer without spike
The amount Solid State Laser difference frequency amplified of warbling produces, and this is also that the widest mid-infrared of current spectrum surpasses continuous laser source.It will be seen that
In the ultra broadband mid-infrared chalcogenide fiber Supercontinuum source reported, all use conventional solid to swash device as pumping, compare
Solid state laser, optical fiber laser has that transformation efficiency is high, heat radiation is good, good beam quality, a series of advantages such as be easily integrated,
Therefore the super continuous laser source for realizing all optical fibre structure as pumping it is more suitable for.But, owing to lacking effective technology
Scheme, current optical fiber laser is difficult to produce the ultrashort pulse optical-fiber laser of high intensity at wavelength more than the middle-infrared band of 4 μm
Output.
Summary of the invention
Embodiments provide a kind of all-fiber mid-infrared ultra-short pulse laser emitter, solve in prior art
Use optical fiber laser be difficult to wavelength more than 4 μm middle-infrared band produce high intensity ultrashort pulse optical-fiber laser output
Technical problem.
In order to solve above-mentioned technical problem, embodiments provide a kind of all-fiber mid-infrared ultra-short pulse laser and send out
Emitter, including the laser pumping source being sequentially connected with, optical fiber circulator, fluoride Raman fiber, the fluoride of deposition two-dimensional material
Micro-nano fiber, the 5th fiber grating, pump combiner and mix Dy3+Chalcogenide fiber；
Wherein, optical fiber circulator includes the first port tail optical fiber, the second port tail optical fiber and the 3rd port tail optical fiber, laser pump (ing)
Laser pumping source tail optical fiber welding the first port tail optical fiber in source, the 3rd port tail optical fiber welding fluoride Raman fiber head end, in fluorination
Thing Raman fiber head end has inscribed the second fiber grating, the 3rd fiber grating successively, and fluoride Raman fiber tail end is inscribed the
Four fiber gratings, the fluoride micro-nano fiber of fluoride Raman fiber tail end laserwelding deposition two-dimensional material, pump combiner includes
Pumping input tail optical fiber, flashlight input tail optical fiber and exit end tail optical fiber, pumping input tail optical fiber welding the second port tail optical fiber,
Described second port tail optical fiber is inscribed the first fiber grating, flashlight input tail optical fiber and the 5th fiber grating welding, and described the
Five fiber gratings with deposition two-dimensional material fluoride micro-nano fiber welding, described exit end tail optical fiber with mix Dy3+Chalcogenide fiber
Welding, mixes Dy3+Chalcogenide fiber outfan is 8 degree of cutting angles；
Further, the laser of the first preset wavelength is specially the laser of 3 mum wavelengths, and the laser of the second preset wavelength is concrete
It is the laser of 2 mum wavelengths.
Further, described laser pumping source tail optical fiber is specially the fluoride fiber of undoped.
Further, the second port tail end of optical fiber circulator is specially fluoride fiber, and the 3rd port tail end is specially
Fluoride fiber.
Further, described first fiber grating is specially fluoride uniform fiber grating, for high to 3 mum wavelength laser
Instead, high thoroughly to 2 mum wavelength laser.
Further, the second fiber grating is specially fluoride chirped fiber grating, for high to 4.58 mum wavelength laser
Instead, and to the second order Raman ultrashort pulse optical-fiber laser of 4.58 mum wavelengths that the second resonator cavity produces dispersion compensation is carried out thus narrow
Change pulse；3rd fiber grating is specially fluoride uniform fiber grating, for the single order Raman continuous light to 3.62 mum wavelengths
Fine laser is high anti-.
Further, described fluoride Raman fiber is specially the fluoride fiber of undoped, corresponding 572cm-1Raman
Frequency displacement, for providing Raman gain for the first resonator cavity and the second resonator cavity.
Further, described 4th fiber grating is specially fluoride uniform fiber grating, for 3.62 mum wavelengths
Single order Raman jointed fiber laser is high anti-.
Further, described 5th fiber grating is specially fluoride chirped fiber grating, is scribed at the fluorine of a undoped
On compound optical fiber, it is used for the second order Raman ultrashort pulse optical-fiber laser to 4.58 mum wavelengths semi-transparent semi-reflecting, simultaneously to the second resonance
The second order Raman ultrashort pulse optical-fiber laser of 4.58 mum wavelengths that chamber produces carries out dispersion compensation thus the pulse that narrows.
Further, Dy is mixed described in3+Chalcogenide fiber is for surpassing the second order Raman of 4.58 mum wavelengths as gain media
Short light pulse fibre laser amplifier, 8 degree of cutting angles mix Dy for reduction3+The residual feedback of chalcogenide fiber end face.
The embodiment of the present invention at least has the following technical effect that or advantage:
1, the present invention by fluoride Raman fiber laser passive mode-locking with mix Pr3+Chalcogenide fiber pulse amplifying combines,
The wavelength high intensity ultrashort pulse optical-fiber laser output more than 4 μm can be realized under all optical fibre structure；
2, the present invention mixes Ho only with a dual wavelength cascade3+Fluoride fiber laser instrument, as pumping source, just may utilize
Dual wavelength is respectively used to realize wavelength and produces more than the ultrashort pulse optical-fiber laser of 4 μm and amplify, and greatly simplified system knot
Structure；
3, the dual wavelength cascaded optical fiber laser pumping that the present invention proposes produces high intensity mid-infrared ultra-short pulse laser
Method has good portability and expansibility, can be according to actual wavelength demands, flexible design output ultrashort pulse light
The wavelength of fine laser；
Accompanying drawing explanation
Fig. 1 is the structural representation of all-fiber mid-infrared ultra-short pulse laser emitter in the embodiment of the present invention.
Detailed description of the invention
The embodiment of the present invention, by providing a kind of all-fiber mid-infrared ultra-short pulse laser emitter, solves prior art
Middle employing optical fiber laser is difficult to produce the ultrashort pulse optical-fiber laser output of high intensity at wavelength more than the middle-infrared band of 4 μm
Technical problem.
In order to solve above-mentioned technical problem, below in conjunction with Figure of description and specific embodiment to above-mentioned technology
Scheme is described in detail.
A kind of all-fiber mid-infrared ultra-short pulse laser emitter that the present invention provides, as it is shown in figure 1, include being sequentially connected with
Laser pumping source 1, optical fiber circulator 4, fluoride Raman fiber 14, the fluoride micro-nano fiber the 17, the 5th of deposition two-dimensional material
Fiber grating 19 and mix Dy3+Chalcogenide fiber；
Concrete annexation is as follows, and this optical fiber circulator 4 includes first port tail optical fiber the 5, second port tail optical fiber 6 and
Three port tail optical fibers 7, this first port tail optical fiber 5 of laser pumping source tail optical fiber 2 welding of laser pumping source 1, form the first fused fiber splice
Point 3, the 3rd port tail optical fiber 7 welding fluoride Raman fiber 14 head end, form the 3rd optical fiber fusion welding point 11.
This fluoride Raman fiber 14 head end has inscribed the second fiber grating the 12, the 3rd fiber grating 13 successively, at this fluorine
Compound Raman fiber 14 tail end is inscribed the 4th fiber grating 15.
The fluoride micro-nano fiber 17 of fluoride Raman fiber 14 tail end laserwelding deposition two-dimensional material, forms the 4th optical fiber welding
Contact 16.
Pump combiner 22 includes pumping input tail optical fiber 10, flashlight input tail end 21 and exit end tail optical fiber 23, its
In, pumping input tail optical fiber 10 welding the second port tail optical fiber 6, form the second optical fiber fusion welding point 9, the second port tail optical fiber 6 is inscribed to be had
First fiber grating 8；This flashlight input tail end 21 welding the 5th fiber grating 19, forms six fibers fusion point 20.5th
Fiber grating 19 and fluoride micro-nano fiber 17 welding of deposition two-dimensional material, form the 5th optical fiber fusion welding point 18.
This exit end tail optical fiber 23 with mix Dy3+Chalcogenide fiber 25 welding, forms the 7th optical fiber fusion welding point 24, mixes Dy at this3+
Chalcogenide fiber 25 outfan is 8 degree of cutting angles 26.
Concrete implementation principle:
The laser of the first preset wavelength that laser pumping source 1 produces and the laser of the second preset wavelength, through optical fiber circulator
4, being all-trans of the laser of the first preset wavelength the first fiber grating 8 at the second port tail optical fiber 6, defeated by the 3rd port tail optical fiber 7
Go out, then through the second fiber grating 12, at the 3rd fiber grating 13, fluoride Raman fiber 14 and the 4th fiber grating 15 structure
The first resonator cavity become produces the single order Raman jointed fiber laser of 3.62 mum wavelengths, along with the increasing of laser pump (ing) source power
Adding, the single order Raman jointed fiber laser of 3.62 mum wavelengths that this first resonator cavity produces is as pumping source, through the second optical fiber light
Grid the 12, the 3rd fiber grating 13, fluoride Raman fiber the 14, the 4th fiber grating 15, the fluoride micro-nano of deposition two-dimensional material
The second resonator cavity that optical fiber the 17, the 5th fiber grating 19 is constituted produces and exports the second order Raman ultrashort pulse of 4.58 mum wavelengths
Optical-fiber laser, above-mentioned, the laser that laser pumping source 1 produces is when optical fiber circulator 4 beam splitting, and the laser of the second preset wavelength is through the
During the first fiber grating 8 of Two-port netwerk tail optical fiber 6, by the laser full impregnated of this second preset wavelength, then through pumping input tail optical fiber
10 enter pump combiner 22, close with the second order Raman ultrashort pulse optical-fiber laser of 4.58 mum wavelengths of this second resonator cavity output
Bundle, is exported by the exit end tail optical fiber 23 of pump combiner 22, enters and mixes Dy3+In chalcogenide fiber, at the second preset wavelength laser
Effect under, the second order Raman ultrashort pulse optical-fiber laser of 4.58 mum wavelengths be exaggerated and exported 4.58 μm ripples by 8 degree of cutting angles
Long ultra-short pulse laser.
In a particular embodiment, the laser of this first preset wavelength is specially the laser of 3 mum wavelengths, and second presets ripple
Long laser is specially the laser of 2 mum wavelengths.
Laser pumping source tail optical fiber 2 is that the fluoride fiber of undoped is used for 3 μm and 2 μm that Output of laser pumping source 1 produces
Wavelength continuous laser.This optical fiber circulator 4 is used for controlling laser propagation direction, and laser propagation direction is only deferred to, this fiber annular
The laser of device 4 second port tail optical fiber 6 input exports from optical fiber circulator 4 the 3rd port tail optical fiber 7, this optical fiber circulator 4 first end
Mouth tail optical fiber 5 host material is fluoride, and for as laser input, this second port tail optical fiber 6 host material is fluoride, uses
In as the double input of laser output, the 3rd port tail optical fiber 7 host material is fluoride, for as laser output.
First fiber grating 8 is fluoride uniform fiber grating, is directly scribed on the second port tail optical fiber 6, reflection kernel
Wavelength is 3 μm, high anti-to 3 mum wavelength laser, high thoroughly to 2 mum wavelength laser, for 3 μm being separated with 2 mum wavelength continuous lasers.
Second fiber grating 12 is fluoride chirped fiber grating, is directly scribed at fluoride Raman fiber 14 head end, instead
Hit a length of 4.58 μm of cardiac wave (corresponding second order Raman fiber optical maser wavelength), high anti-to 4.58 mum wavelength laser, this second optical fiber
The second order Raman ultrashort pulse optical-fiber laser of 4.58 mum wavelengths is also entered by grating 12 as while second resonator cavity one end feedback
Row dispersion compensation thus the pulse that narrows.
3rd fiber grating 13 is fluoride uniform fiber grating, is directly scribed at fluoride Raman fiber 14 head end, and
After being positioned at the second fiber grating 12, reflection kernel wavelength is 3.62 μm (corresponding single order Raman fiber optical maser wavelengths), to 3.62 μm
Wavelength laser is high anti-, and the 3rd fiber grating 13 is as the first resonator cavity feedback end.
This fluoride Raman fiber 14 is specially the fluoride fiber of undoped, corresponding 572cm-1Raman frequency shift, be used for
Raman gain is provided, thus the second order Raman fiber of the single order Raman fiber laser and 4.58 mum wavelengths producing 3.62 mum wavelengths swashs
Light.
4th fiber grating 15 is fluoride uniform fiber grating, is directly scribed at fluoride Raman fiber 14 tail end, instead
Hit a length of 3.62 μm of cardiac wave (corresponding single order Raman fiber optical maser wavelength), high anti-to 3.62 mum wavelength laser, the 4th optical fiber
Grating 15 is as another feedback end of the first resonator cavity.
This fluoride Raman fiber 14 tail end and fluoride micro-nano fiber 17 welding depositing two-dimensional material, this deposition two dimension
The fluoride micro-nano fiber 17 of material is for producing ultrashort pulse optical fiber to the second order Raman fiber laser mode locking of 4.58 mum wavelengths
Laser.
The fluoride micro-nano fiber 17 of deposition two-dimensional material and the 5th fiber grating 19 welding, the 5th fiber grating 19 is
Fluoride chirped fiber grating, and the 5th fiber grating 19 is directly scribed on the fluoride fiber of one section of undoped, reflection
Centre wavelength is 4.58 μm (corresponding second order Raman fiber optical maser wavelengths), semi-transparent semi-reflecting to 4.58 mum wavelength laser, the 5th light
Fine grating 19, as another feedback end of the second resonator cavity, couples output simultaneously, also surpasses the second order Raman of this 4.58 mum wavelength
Short light pulse fibre laser carries out dispersion compensation thus the pulse that narrows.
Pumping entry port tail optical fiber 10 host material of pump combiner 22 is fluoride, continuous for incident 2 mum wavelengths
Laser.
By flashlight incidence end tail optical fiber 21 welding of the 5th fiber grating 19 with pump combiner 22, this flashlight incidence tail
Fine 21 host materials are fluoride, and for 4.58 mum wavelength laser are imported pump combiner 22, this pump combiner 22 is used for
2 mum wavelength laser and 4.58 mum wavelengths are swashed combiner, and exit end tail optical fiber 23 host material of this pump combiner 22 is fluorination
Thing, 2 mum wavelength laser and 4.58 mum wavelength laser after closing bundle export.
Then, the exit end tail optical fiber 23 of this pump combiner 22 with mix Dy3+Chalcogenide fiber 25 welding, the conjunction of above-mentioned output
The laser of bundle is injected this and is mixed Dy3+Chalcogenide fiber 25, this mixes Dy3+Chalcogenide fiber 25 is as gain media, simultaneously at 2 μm ripples
Under long laser action, the laser amplifier of 4.58 mum wavelengths, 4.58 μm ultrashort pulses of high intensity are finally exported by 8 degree of cutting angles 26
Laser, this laser can be used for mid-infrared and surpasses continuous laser generation.These 8 degree of cutting angles 26 mix Dy for reduction3+Chalcogenide fiber end
The residual feedback in face.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and amendment to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the present invention to the present invention
God and scope.So, if these amendments of the present invention and modification belong to the scope of the claims in the present invention and equivalent technologies thereof
Within, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. an all-fiber mid-infrared ultra-short pulse laser emitter, it is characterised in that the laser pumping source that includes being sequentially connected with,
Bundle is closed in optical fiber circulator, fluoride Raman fiber, the deposition fluoride micro-nano fiber of two-dimensional material, the 5th fiber grating, pumping
Device and mix Dy3+Chalcogenide fiber；
Wherein, optical fiber circulator includes the first port tail optical fiber, the second port tail optical fiber and the 3rd port tail optical fiber, laser pumping source
Laser pumping source tail optical fiber welding the first port tail optical fiber, the 3rd port tail optical fiber welding fluoride Raman fiber head end, draws at fluoride
Graceful optical fiber head end has inscribed the second fiber grating, the 3rd fiber grating successively, and fluoride Raman fiber tail end is inscribed the 4th light
Fine grating, the fluoride micro-nano fiber of fluoride Raman fiber tail end laserwelding deposition two-dimensional material, pump combiner includes pumping
Incidence end tail optical fiber, flashlight input tail optical fiber and exit end tail optical fiber, pumping input tail optical fiber connects the second port tail optical fiber, described
Second port tail optical fiber is inscribed the first fiber grating, flashlight input tail optical fiber and the 5th fiber grating welding, described 5th light
The fluoride micro-nano fiber welding of fine grating and deposition two-dimensional material, described exit end tail optical fiber with mix Dy3+Chalcogenide fiber welding,
Mix Dy3+Chalcogenide fiber outfan is 8 degree of cutting angles；
The laser of the first preset wavelength that laser pumping source produces and the laser of the second preset wavelength, through optical fiber circulator beam splitting
After, the laser of the first preset wavelength is through the 3rd port tail optical fiber, the second fiber grating, at the 3rd fiber grating, fluoride Raman light
The first resonator cavity that fine and the 4th fiber grating is constituted produces the single order Raman jointed fiber laser of 3.62 mum wavelengths, along with
The increase of laser pump (ing) source power, the single order Raman jointed fiber laser of 3.62 mum wavelengths that the first resonator cavity produces is as pumping
Source, through the second fiber grating, the 3rd fiber grating, fluoride Raman fiber, the 4th fiber grating, the fluorination of deposition two-dimensional material
The second resonator cavity that thing micro-nano fiber, the 5th fiber grating are constituted exports the second order Raman ultrashort pulse optical fiber of 4.58 mum wavelengths
Laser, laser pumping source produce laser after optical fiber circulator beam splitting, the laser of the second preset wavelength through the second port tail optical fiber,
First fiber grating, pumping input tail optical fiber enter pump combiner, with the second order of 4.58 mum wavelengths of the second resonator cavity output
Raman ultrashort pulse optical-fiber laser closes bundle, the exit end tail optical fiber of pump combiner export, and enters and mixes Dy3+In chalcogenide fiber,
Under the effect of the second preset wavelength laser, the second order Raman ultrashort pulse optical-fiber laser of 4.58 mum wavelengths is exaggerated and by 8 degree
Cutting angle exports the ultra-short pulse laser of 4.58 mum wavelengths.
All-fiber mid-infrared ultra-short pulse laser emitter the most according to claim 1, it is characterised in that first presets ripple
Long laser is specially the laser of 3 mum wavelengths, and the laser of the second preset wavelength is specially the laser of 2 mum wavelengths.
All-fiber mid-infrared ultra-short pulse laser emitter the most according to claim 1, it is characterised in that described laser pump
Source, Pu tail optical fiber is specially the fluoride fiber of undoped.
All-fiber mid-infrared ultra-short pulse laser emitter the most according to claim 1, it is characterised in that optical fiber circulator
The second port tail end be specially fluoride fiber, the 3rd port tail end is specially fluoride fiber.
All-fiber mid-infrared ultra-short pulse laser emitter the most according to claim 1, it is characterised in that described first light
Fine grating is specially fluoride uniform fiber grating, for high anti-to 3 mum wavelength laser, high thoroughly to 2 mum wavelength laser.
All-fiber mid-infrared ultra-short pulse laser emitter the most according to claim 1, it is characterised in that the second optical fiber light
Grid are specially fluoride chirped fiber grating, for high anti-to 4.58 mum wavelength laser, and 4.58 μ that the second resonator cavity is produced
The second order Raman ultrashort pulse optical-fiber laser of m wavelength carries out dispersion compensation thus the pulse that narrows；3rd fiber grating is specially fluorine
Compound uniform fiber grating, is used for the single order Raman jointed fiber laser to 3.62 mum wavelengths high anti-.
All-fiber mid-infrared ultra-short pulse laser emitter the most according to claim 1, it is characterised in that described fluoride
Raman fiber is specially the fluoride fiber of undoped, corresponding 572cm-1Raman frequency shift, being used for is the first resonator cavity and second
Resonator cavity provides Raman gain.
All-fiber mid-infrared ultra-short pulse laser emitter the most according to claim 1, it is characterised in that described 4th light
Fine grating is specially fluoride uniform fiber grating, is used for the single order Raman jointed fiber laser to 3.62 mum wavelengths high anti-.
All-fiber mid-infrared ultra-short pulse laser emitter the most according to claim 1, it is characterised in that described 5th light
Fine grating is specially fluoride chirped fiber grating, is scribed on the fluoride fiber of a undoped, for 4.58 mum wavelengths
Second order Raman ultrashort pulse optical-fiber laser semi-transparent semi-reflecting, the second order Raman of 4.58 mum wavelengths that simultaneously the second resonator cavity produced
Ultrashort pulse optical-fiber laser carries out dispersion compensation thus the pulse that narrows.
All-fiber mid-infrared ultra-short pulse laser emitter the most according to claim 1, it is characterised in that described in mix Dy3+
Chalcogenide fiber is used for amplifying the second order Raman ultrashort pulse optical-fiber laser of 4.58 mum wavelengths as gain media, 8 degree of cuttings
Dy is mixed for reduction in angle3+The residual feedback of chalcogenide fiber end face.
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| CN (1) | CN106253041A (en) |
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| CN107359497A (en) * | 2017-07-07 | 2017-11-17 | 清华大学 | A kind of method of dispersion management and chirp compensation based on micro-nano fiber |
| CN109904716A (en) * | 2019-04-25 | 2019-06-18 | 电子科技大学 | A kind of dual wavelength is the same as ultrashort pulse full optical fiber laser source infrared in repetition |
| US20210359483A1 (en) * | 2020-05-13 | 2021-11-18 | National University Of Singapore | Visible and tunable ring cavity laser source |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359497A (en) * | 2017-07-07 | 2017-11-17 | 清华大学 | A kind of method of dispersion management and chirp compensation based on micro-nano fiber |
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| CN109904716A (en) * | 2019-04-25 | 2019-06-18 | 电子科技大学 | A kind of dual wavelength is the same as ultrashort pulse full optical fiber laser source infrared in repetition |
| US20210359483A1 (en) * | 2020-05-13 | 2021-11-18 | National University Of Singapore | Visible and tunable ring cavity laser source |
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Application publication date: 20161221 |