CN109980495A - Saturable absorption preparation, saturable absorber and optical fiber laser - Google Patents
Saturable absorption preparation, saturable absorber and optical fiber laser Download PDFInfo
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- CN109980495A CN109980495A CN201711462693.6A CN201711462693A CN109980495A CN 109980495 A CN109980495 A CN 109980495A CN 201711462693 A CN201711462693 A CN 201711462693A CN 109980495 A CN109980495 A CN 109980495A
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- optical fiber
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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
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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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1106—Mode locking
- H01S3/1112—Passive mode locking
- H01S3/1115—Passive mode locking using intracavity saturable absorbers
- H01S3/1118—Semiconductor saturable absorbers, e.g. semiconductor saturable absorber mirrors [SESAMs]; Solid-state saturable absorbers, e.g. carbon nanotube [CNT] based
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- Optics & Photonics (AREA)
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- Materials Engineering (AREA)
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Abstract
The application discloses a kind of saturable absorption preparation, saturable absorber and optical fiber laser.Wherein, saturable absorption preparation includes: that three selenizings, two indium of block is placed in organic solvent；Organic solvent containing three selenizings, two indium is placed in ultrasonic machine to obtain suspension；The suspension is subjected to centrifugal treating, the supernatant liquid after extracting centrifugal treating；Supernatant liquid drop is dried on quartz plate, obtains three selenizings, two indium two-dimensional nano quartz plate；And three selenizings, the two indium two-dimensional nano quartz plate is polished to obtain saturable absorber.Saturable absorption preparation disclosed in the present application can prepare saturable absorber by the way of cheap, also, be appropriate for large scale preparation saturable absorber.
Description
Technical field
The present invention relates to the saturable absorption device fields of laser, in particular to a kind of saturable absorption system
Preparation Method, saturable absorber and optical fiber laser.
Background technique
Ultra-short pulse laser, which has, to be extremely widely applied, as superfast light switch, fiber optic communication, Fibre Optical Sensor, industrial processes,
The fields such as laser guidance, laser medicine, generating ultra-short pulse laser common method at present is passive mode-locking, and saturable absorber is
Core component for passive mode-locking.Currently, passive mode-locking fiber laser is since its structure is simple, it is easy to maintain the advantages that
Scientific research, medical treatment and manufacturing field have wide practical use, and become research hotspot.
Currently, people use core component of the semiconductor saturable absorbing mirror (SESAM) as mode locking, SESAM is due to life
Grow III-V race's semiconductor list quantum hydrazine or multiple quantum the hydrazine composition on Bragg mirror surface.However SESAM light injury threshold
Be worth low, application band is narrow (about 800-1600nm), and recovery time is longer (about a few nanoseconds), and structure is complicated, and manufacture need it is noble and unsullied
Net environment and expensive molecular number extension, Metal Organic Chemical Vapor Deposition (MOCVD), manufacturing cost is high, in performance
The problems such as there is also modulation depths to be difficult to, light injury threshold is low, and SESAM can only be specific as reflection unit
Linear topology chamber in apply, thus largely limit the cavity body structure of optical fiber laser.
In recent years, with the development of nanotechnology, a series of carbon nanomaterials such as graphene, graphene oxide, carbon nanometer
Pipe etc. by extensive is confirmed that saturated absorbing body can be used as, for generating ultra-short pulse laser.It is based especially on single
Manage the saturable absorber device of (SWNT).But SWNT itself is used as a kind of anisotropic material, direction of growth when preparation,
Diameter, length, chirality etc. are difficult to select and control.On the other hand, the optical absorption characteristics of SWNT and carbon pipe diameter, chirality etc.
Factor is related, will directly affect the performance of device, further brings problem to the accuracy of mode locking.In addition, SWNT is easy to tangle
Bunchy brings higher linear impairments, these disadvantages limit the output power based on SWNT passive mode-locking fiber laser, weight
Complex frequency, pulsewidth and beam quality.The unique dirac of monatomic graphene is based primarily upon as graphene saturable absorber
Band structure, with the increase of the atom number of plies, carrier mobility sharply declines, and the properties such as band structure and optical absorption characteristics become
Change it is larger so that the graphene of polyatom layer application be very restricted.And obtain cheap monoatomic layer graphene
Preparation method is that still have project to be solved at present.CVD method needs monocrystalline copper substrate and complicated apparatus and process, cost compared with
It is high；Mechanical stripping method yield is too low, and chemical stripping method can introduce metal ion and be not easy to thoroughly remove, to influence the electricity of graphene
Minor structure and performance.So the device based on graphene is also not effectively cheap solution.
Therefore, it is necessary to a kind of new saturable absorption preparation, saturable absorber and optical fiber lasers.
Above- mentioned information are only used for reinforcing the understanding to background of the invention, therefore it disclosed in the background technology part
It may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
In view of this, the present invention provides a kind of saturable absorption preparation, saturable absorber and optical fiber laser,
Wherein, saturable absorption preparation provided by the invention can prepare saturable absorber by the way of cheap, also,
The preparation method is suitble to large scale preparation；Saturable absorber provided by the invention, has the advantages that small in size, constitutes a variety of
The mode-locking device of type；Optical fiber laser provided by the invention, in scientific research, medical treatment and manufacturing field have wide practical use.
Other characteristics and advantages of the invention will be apparent from by the following detailed description, or partially by the present invention
Practice and acquistion.
According to an aspect of the invention, it is proposed that a kind of saturable absorption preparation, this method comprises: by the three of block
Two indium of selenizing is placed in organic solvent；Organic solvent containing three selenizings, two indium is placed in ultrasonic machine to obtain and suspend
Liquid；The suspension is subjected to centrifugal treating, the supernatant liquid after extracting centrifugal treating；The supernatant liquid is dripped in quartz plate
Upper drying obtains three selenizings, two indium two-dimensional nano quartz plate；And three selenizings, the two indium two-dimensional nano quartz plate is thrown
Light is to obtain saturable absorber.
In a kind of exemplary embodiment of the disclosure, the organic solvent, comprising: N- cyclohexyl pyrrolidone solvent.
In a kind of exemplary embodiment of the disclosure, three selenizings, two indium is in the dense of N- cyclohexyl pyrrolidone solvent
Degree is 2mg/ml.
It is described to throw three selenizings, the two indium two-dimensional nano quartz plate in a kind of exemplary embodiment of the disclosure
Light is to obtain saturable absorber, comprising: by three selenizings, the two indium two-dimensional nano quartz plate in such a way that end face polishes
Reason, obtains the saturable absorber.
According to an aspect of the invention, it is proposed that a kind of saturable absorber, which includes: the saturable
Absorber is three selenizings, two indium two-dimensional nano piece；And the saturable absorber is the saturable absorption of method above preparation
Body.
According to an aspect of the invention, it is proposed that a kind of optical-fiber laser, the optical-fiber laser include: include: loop laser chamber；Institute
Stating loop laser chamber includes: saturable absorber, and the material of the saturable absorber is three selenizings, two indium two-dimensional nano piece, institute
Stating three selenizings, two indium two-dimensional nano piece size and thickness is respectively 200nm and 5nm；Wavelength pumps source laser；Wavelength division multiplexer；Light
It is fine；Isolator；Shake controller partially；Output coupler；Optical fiber filter.
In a kind of exemplary embodiment of the disclosure, the wavelength pumps source laser, comprising: turnable pulse width 976nm pump
Pu source laser；Source laser is pumped with continuous 976nm.
In a kind of exemplary embodiment of the disclosure, the wavelength division multiplexer, comprising: 1060nm wavelength wavelength-division multiplex
Device；With 1550nm wavelength wavelength division multiplexer.
In a kind of exemplary embodiment of the disclosure, the optical fiber, comprising: Yb dosed optical fiber；And erbium-doped fiber.
In a kind of exemplary embodiment of the disclosure, the isolator, the inclined shake controller, the output coupling
Device and the optical fiber filter are using single mode optical fiber as base main body.
Saturable absorption preparation according to the present invention, can prepare saturable absorber by the way of cheap,
Also, the preparation method is suitble to large scale preparation saturable absorber.
Saturable absorber according to the present invention, has the advantages that small in size, constitutes a plurality of types of mode-locking devices.
Optical fiber laser according to the present invention, in scientific research, medical treatment and manufacturing field have wide practical use.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Invention.
Detailed description of the invention
Its example embodiment is described in detail by referring to accompanying drawing, above and other target of the invention, feature and advantage will
It becomes more fully apparent.Drawings discussed below is only some embodiments of the present invention, for the ordinary skill of this field
For personnel, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of saturable absorption preparation shown according to an exemplary embodiment.
Fig. 2 is a kind of schematic diagram of the saturable absorption preparation shown according to another exemplary embodiment.
Fig. 3 is a kind of schematic diagram of optical fiber laser shown according to an exemplary embodiment.
Fig. 4 is a kind of effect diagram of optical fiber laser shown according to an exemplary embodiment.
Fig. 5 is a kind of effect diagram of the optical fiber laser shown according to another exemplary embodiment.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be real in a variety of forms
It applies, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will be comprehensively and complete
It is whole, and the design of example embodiment is comprehensively communicated to those skilled in the art.Identical appended drawing reference indicates in figure
Same or similar part, thus repetition thereof will be omitted.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In example.In the following description, many details are provided to provide and fully understand to the embodiment of the present invention.However,
It will be appreciated by persons skilled in the art that technical solution of the present invention can be practiced without one or more in specific detail,
Or it can be using other methods, constituent element, device, step etc..In other cases, it is not shown in detail or describes known side
Method, device, realization or operation are to avoid fuzzy each aspect of the present invention.
Block diagram shown in the drawings is only functional entity, not necessarily must be corresponding with physically separate entity.
I.e., it is possible to realize these functional entitys using software form, or realized in one or more hardware modules or integrated circuit
These functional entitys, or these functional entitys are realized in heterogeneous networks and/or processor device and/or microcontroller device.
Flow chart shown in the drawings is merely illustrative, it is not necessary to including all content and operation/step,
It is not required to execute by described sequence.For example, some operation/steps can also decompose, and some operation/steps can close
And or part merge, therefore the sequence actually executed is possible to change according to the actual situation.
It should be understood that although herein various assemblies may be described using term first, second, third, etc., these groups
Part should not be limited by these terms.These terms are to distinguish a component and another component.Therefore, first group be discussed herein below
Part can be described as the second component without departing from the teaching of disclosure concept.As used herein, term " and/or " include associated
All combinations for listing any of project and one or more.
It will be understood by those skilled in the art that attached drawing is the schematic diagram of example embodiment, module or process in attached drawing
Necessary to not necessarily implementing the present invention, therefore it cannot be used for limiting the scope of the invention.
Fig. 1 is a kind of flow chart of saturable absorption preparation.Fig. 2 is a kind of saturable absorption preparation
Schematic diagram.Fig. 1 and Fig. 2 illustratively illustrates the preparation method of the saturable absorber of the application.
As shown in Figure 1, in S102, by three selenizings, the two indium (In of block2Se3) be placed in organic solvent.It is described organic
Solvent includes: N- cyclohexyl pyrrolidone solvent.The In2Se3It is 2mg/ml in the concentration of N- cyclohexyl pyrrolidone solvent.
It can be for example, by block In2Se3Material is put in the beaker equipped with N- cyclohexyl pyrrolidone solvent (NMP).
In S104, the organic solvent containing three selenizings, two indium is placed in ultrasonic machine to obtain suspension.Can for example,
Described above is equipped with In2Se3Beaker is put in the ultrasonic machine that power is 400W with N- cyclohexyl pyrrolidone solvent (NMP)
In, thermostatic ultrasonic 8 hours.
In S106, the suspension is subjected to centrifugal treating, the supernatant liquid after extracting centrifugal treating.Constant temperature will be passed through
Processing in 8 hours obtains unit for uniform suspension and carries out rotary process with 5000rpm speed, after the completion of centrifugation, only extracts centrifugate upper layer
Liquid is to remove unstripped In2Se3Block.
In S108, supernatant liquid drop is dried on quartz plate, obtains three selenizings, two indium two-dimensional nano quartz plate.
By uniform In2Se3The nmp solution of two-dimensional nano piece drips on quartz plate, puts 60 DEG C of baker into and waits 4 hours.To all
After solvent evaporation, three selenizings, two indium two-dimensional nano quartz plate is obtained.
In S110, three selenizings, the two indium two-dimensional nano quartz plate is polished to obtain saturable absorber.It can
For example, the In after drying2Se3Two-dimensional nano piece quartz plate obtains saturable using the test method of the D-shape of end face polishing
Absorber, the saturable absorber can be used as the mode locking saturated absorbing body that stabilization can operate.
Saturable absorption preparation according to the present invention, can prepare saturable absorber by the way of cheap,
Also, saturable absorption preparation of the invention is suitble to large scale preparation saturable absorber.
It will be clearly understood that the present disclosure describe how being formed and using particular example, but the principle of the present invention is not limited to
These exemplary any details.On the contrary, the introduction based on present disclosure, these principles can be applied to many other
Embodiment.
It will be appreciated by those skilled in the art that realizing that all or part of the steps of above-described embodiment is implemented as being executed by CPU
Computer program.When the computer program is executed by CPU, above-mentioned function defined by the above method provided by the invention is executed
Energy.The program can store in a kind of computer readable storage medium, which can be read-only memory, magnetic
Disk or CD etc..
Further, it should be noted that above-mentioned attached drawing is only place included by method according to an exemplary embodiment of the present invention
Reason schematically illustrates, rather than limits purpose.It can be readily appreciated that above-mentioned processing shown in the drawings is not indicated or is limited at these
The time sequencing of reason.In addition, be also easy to understand, these processing, which can be, for example either synchronously or asynchronously to be executed in multiple modules.
The application provides a kind of saturable absorber, which is characterized in that the saturable absorber is three selenizings, two indium two
Tie up nanometer sheet.The saturable absorber is the saturable absorber prepared with method as discussed above.This method comprises: by block
Three selenizings, two indium of body is placed in organic solvent；Organic solvent containing three selenizings, two indium is placed in ultrasonic machine to obtain
Suspension；The suspension is subjected to centrifugal treating, the supernatant liquid after extracting centrifugal treating；The supernatant liquid is dripped in stone
The drying of English on piece, obtains three selenizings, two indium two-dimensional nano quartz plate；And by three selenizings, the two indium two-dimensional nano quartz plate into
Row polishing is to obtain saturable absorber.
Fig. 3 is a kind of schematic diagram of optical fiber laser shown according to an exemplary embodiment.Fig. 3 is to using in the application
The optical fiber laser that is prepared into of saturable absorption carry out exemplary description.
The application provides a kind of optical fiber laser, which includes: loop laser chamber；The loop laser chamber packet
Include: saturable absorber (1), saturable absorber (1) are In made of preparation method as described above2Se3Two-dimensional nano piece
The 976nm wavelength of the optical fiber saturable absorber of end face polishing, turnable pulse width pumps source laser (2), 1064nm or 1550nm
Wavelength with wavelength division multiplexer (3), adulterate ytterbium perhaps erbium-doped fiber (4) 1060nm 1550nm wavelength with isolator (5),
Shake controller (6) partially of 1060nm 1550nm wavelength, 10% output coupler (7), optical fiber filter (8).
Wherein, wavelength pumping source laser (2) can pass through adjusting pulsewidth and duty ratio, pulsewidth under impulse form running
Adjustable extent can be from continuously to 10ns.Wavelength is pumped source laser (2) and is provided with pulse or conitnuous forms to optical fiber cavity the inside
Energy, suitable pulse width time, the 1064nm or the intracavitary exciting light of 1550nm of pulse pump excitation, can successfully make In2Se3Two
Dimension nanometer sheet saturated absorbing body reaches saturation state, to export the ultrafast laser of repetition rates adjustable.
Wavelength division multiplexer (3) is 1064nm 1550nm wavelength single mode optical fiber kenel.Wavelength division multiplexer (3) is with optical fiber
Welding process connects optical fiber (4) and output coupler (7).
Optical fiber (4) is doping ytterbium or doping bait optical fiber.This optical fiber (4) is with optical fiber splicing method to connect wavelength-division multiplex
Device (3) and use isolator (5).
Isolator (5) is 1060nm 1550nm wavelength isolator, and isolator (5) is substantially main using single mode optical fiber
Body.This isolator is connect with optical fiber splicing method optical fiber (4), another party with inclined shake controller (6).
Shake controller (6) is 1064nm 1550nm wavelength shake controller partially partially, and the inclined shake controller (6) uses
Single mode optical fiber is base main body.Its basic function is used to control to be swashed by the 1064nm or 1550nm of saturable absorber (1)
Luminous polarization direction, to lower saturable absorber (1) to the greatest extent to the linear of 1064nm 1550nm exciting light
It absorbs to improve the stability and Injury Thresholds of saturable absorber (1).
Output coupler (7) is 10% output coupler, and the coupler (7) is base main body using single mode optical fiber.
Optical fiber filter (8) is that tail knits filter, and the optical fiber filter (8) is using single mode optical fiber as base main body.
Fig. 4, Fig. 5 are a kind of effect diagrams of optical fiber laser shown according to an exemplary embodiment.
According to the present invention2Se3In two-dimensional nano piece saturable absorber, used In2Se3Two-dimensional nano piece is big
Small and thickness is respectively 200nm and 5nm.It can refer to attached Figure 4 and 5, obtained In2Se3Two-dimensional nano piece in 1064nm and
Stable mode locking pulse sequence and pulse output signal under 1550nm wavelength, the time interval between two pulses are respectively
70.9ns or 136.8ns matches for a long time with the round-trip chamber of laser, it was demonstrated that is effective mode locking, exports the pulsewidth of pulse
Respectively 252ps and 1.543x215fs.
Optical fiber laser according to the present invention, the 976nm pumping source laser using the either continuous light of turnable pulse width is
In is installed2Se3The ytterbium of two-dimensional nano piece saturated absorbing body adulterates or bait doped fiber laser cavity provides the pulse energy of turnable pulse width
Amount is to excite 1064nm 1550nm laser and In2Se3Two-dimensional nano piece saturated absorbing body and reach repetition rates adjustable lock
Mould phenomenon.
It is particularly shown and described exemplary embodiment of the present invention above.It should be appreciated that the present invention is not limited to
Detailed construction, set-up mode or implementation method described herein；On the contrary, it is intended to cover included in appended claims
Various modifications and equivalence setting in spirit and scope.
In addition, structure shown by this specification Figure of description, ratio, size etc., only to cooperate specification institute
Disclosure, for skilled in the art realises that be not limited to the enforceable qualifications of the disclosure with reading, therefore
Do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influencing the disclosure
Under the technical effect and achieved purpose that can be generated, it should all still fall in technology contents disclosed in the disclosure and obtain and can cover
In the range of.Meanwhile cited such as "upper" in this specification, " first ", " second " and " one " term, be also only and be convenient for
Narration is illustrated, rather than to limit the enforceable range of the disclosure, relativeness is altered or modified, without substantive change
Under technology contents, when being also considered as the enforceable scope of the present invention.
Claims (10)
1. a kind of saturable absorption preparation characterized by comprising
Three selenizings, two indium of block is placed in organic solvent；
Organic solvent containing three selenizings, two indium is placed in ultrasonic machine to obtain suspension；
The suspension is subjected to centrifugal treating, the supernatant liquid after extracting centrifugal treating；
Supernatant liquid drop is dried on quartz plate, obtains three selenizings, two indium two-dimensional nano quartz plate；And
Three selenizings, the two indium two-dimensional nano quartz plate is polished to obtain saturable absorber.
2. the method as described in claim 1, which is characterized in that the organic solvent, comprising:
N- cyclohexyl pyrrolidone solvent.
3. method according to claim 2, which is characterized in that three selenizings, two indium is in N- cyclohexyl pyrrolidone solvent
Concentration is 2mg/ml.
4. the method as described in claim 1, which is characterized in that described to carry out three selenizings, the two indium two-dimensional nano quartz plate
Polishing is to obtain saturable absorber, comprising:
Three selenizings, the two indium two-dimensional nano quartz plate is handled in such a way that end face polishes, obtains the saturable absorption
Body.
5. a kind of saturable absorber, which is characterized in that
The saturable absorber is the saturable absorber such as the preparation of any one of claim 1-4 method.
6. a kind of optical fiber laser characterized by comprising
Loop laser chamber；
The loop laser chamber includes:
Saturable absorber, the saturable absorber are the saturable absorber such as the preparation of any one of claim 1-4 method,
Three selenizings, two indium two-dimensional nano piece size used by the saturable absorber and thickness are respectively 200nm and 5nm；
Wavelength pumps source laser；
Wavelength division multiplexer；
Optical fiber；
Isolator；
Shake controller partially；
Output coupler；
Optical fiber filter.
7. optical fiber laser as claimed in claim 6, which is characterized in that the wavelength pumps source laser, comprising:
Turnable pulse width 976nm pumps source laser；With
Continuous 976nm pumps source laser.
8. optical fiber laser as claimed in claim 6, which is characterized in that the wavelength division multiplexer, comprising:
1060nm wavelength wavelength division multiplexer；With
1550nm wavelength wavelength division multiplexer.
9. optical fiber laser as claimed in claim 6, which is characterized in that the optical fiber, comprising:
Yb dosed optical fiber；With
Erbium-doped fiber.
10. optical fiber laser as claimed in claim 6, which is characterized in that the isolator, the inclined shake controller, described
Output coupler and the optical fiber filter are using single mode optical fiber as base main body.
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Cited By (6)
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| CN111987582B (en) * | 2020-09-01 | 2021-11-26 | 深圳大学 | Preparation method of saturable absorber based on MXene |
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