CN104158079A - Saturable absorber device based on MoS2 or MoSe2 two-dimensional nanosheet - Google Patents
Saturable absorber device based on MoS2 or MoSe2 two-dimensional nanosheet Download PDFInfo
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- CN104158079A CN104158079A CN201310468689.6A CN201310468689A CN104158079A CN 104158079 A CN104158079 A CN 104158079A CN 201310468689 A CN201310468689 A CN 201310468689A CN 104158079 A CN104158079 A CN 104158079A
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- saturable absorber
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- nano sheet
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Abstract
Disclosed is a saturable absorber device based on an MoS2 or MoSe2 two-dimensional nanosheet. The saturable absorber device comprises nano material encapsulated in a transparent container as a saturable absorber and a substrate supporting the saturable absorber. The nano material of the saturable absorber is an MoS2 or MoSe2 two-dimensional nanosheet. According to the invention, the saturable absorber device based on the MoS2 or MoSe2 two-dimensional nanosheet has the advantages of being low in cost, suitable for large-scale preparation, small in size and capable of constituting mode-locked devices of different types, and is especially suitable for the application environment of a fiber laser.
Description
Technical field
The present invention relates to nonlinear optical material and device, particularly a kind of based on MoS
2, MoSe
2the saturated absorbing body device of two-dimensional nano sheet, can be used for fiber laser locked mode, adjust Q, laser beam shaping etc.
Background technology
Saturable absorber has the character that light transmission rate increases with light intensity, can be used for laser and adjusts Q, beam shaping etc.Meanwhile, saturable absorber is still for the core component of the passive mode locking of ultrashort pulse laser.At present, passive mode-locking fiber laser is gathered around in scientific research, medical treatment and manufacture field and is had wide practical use due to its advantage such as simple in structure, easy to maintenance, becomes the focus of the outer research of Present Domestic.
Traditionally, people use semiconductor saturable absorber mirror (SESAM) as the core component of locked mode.SESAM consists of the III-V family semiconductor single quantum well or the multiple quantum trap that are grown in Bragg mirror surface.When light beam irradiates, the reflectivity of device raises with the increase of light intensity.Development through many decades, the SESAM maturation that possesses skills, the feature of stable output, yet SESAM light injury threshold is low, application band narrow (about 800-1600nm), grow recovery time (approximately a few nanosecond), complex structure, its manufacture needs the environment of high cleaning and expensive equipment as molecular beam epitaxy (MBE)/metallo-organic compound chemical vapour deposition (CVD) (MOCVD).Meanwhile, for passive mode-locking fiber laser, SESAM can only apply as reflection unit in specific linear topology chamber, has so just limited greatly the optical cavity structure of fiber laser.
In recent years, along with the development of nanometer technology, people have proposed the saturable absorber device based on Single Walled Carbon Nanotube (SWNT).SWNT has good saturated absorption response near infrared band, in SCI periodical < < Journal of Lightwave Technology > >, document < < Laser Mode Locking Using a Saturable Absorber Incorporating Carbon Nanotubes > > (the 1st phase of 22 volumes in 2004) has reported the reflective and transmission-type saturable absorber device that utilizes SWNT to prepare.In literary composition, this device has the features such as ultrafast recovery time (<1ps), polarization insensitive, photodamage resistant and stable chemical nature.Yet SWNT itself is as a kind of anisotropic material, during preparation, the direction of growth, diameter, length, chirality etc. are difficult to select and control.And the factor analysis such as the optical absorption characteristics of SWNT and carbon pipe diameter, chirality will directly affect the performance of device, bring a difficult problem to the accurate control of locked mode.Meanwhile, the SWNT bunchy that easily tangles, brings higher linear impairments.Above drawbacks limit power output, repetition rate, pulsewidth and the beam quality of passive mode-locking fiber laser based on SWNT.
Chinese invention patent prospectus CN102439802 and document < < Atomic-Layer Graphene as a Saturable Absorber for Ultrafast Pulsed Lasers > > (SCI periodical < < Advanced Materials > >, within 2009,19 phases 3077 – is 3083 pages) a kind of saturable absorber Apparatus and method for based on Graphene is disclosed, comprise preparation and formation method for the Graphene element of fiber laser.Its basic ideas are that monatomic graphene film is wrapped in transparent polymer or directly transfers to optical fiber pigtail head section as saturable absorber.The method has realized the 1565nm of power output 2mW in single mode fiber laser, 756fs Laser output.But the dirac band structure of the characteristic of Graphene saturable absorber excellence based on monatomic Graphene uniqueness, increase along with the atom number of plies, the change of properties such as sharply decline of carrier mobility, band structure and optical absorption characteristics are larger, and the application of the Graphene of polyatom layer is restricted.And the cheapness of monoatomic layer Graphene, effectively preparation remains problem to be solved at present.For example, CVD method needs single crystal Cu substrate and complicated apparatus and process, and cost is higher; The standby Graphene quality of mechanical stripping legal system is good, but output is too low; Though chemical stripping method can be prepared in a large number, the metal ion of introducing is difficult for thoroughly removing, thereby affects electronic structure and the performance of Graphene.To sum up, the device based on Graphene is not still effective, cheap solution.
Summary of the invention
In order to overcome the manufacture of above-mentioned saturable absorber device and the defect of use, the technical problem that the present invention solves provides a kind of based on MoS
2, MoSe
2the saturable absorber device of two-dimensional nano sheet, this device has feature simple in structure, with low cost.
The present invention is achieved through the following technical solutions.
A kind of based on MoS
2, MoSe
2the saturable absorber device of two-dimensional nano sheet, comprises the matrix that is encapsulated in the interior nano material as saturable absorber of transparent vessel and this saturable absorber of carrying, it is characterized in that: the nano material of described saturable absorber is MoS
2, or MoSe
2two-dimensional nano sheet.
Described matrix is organic solvent or organic polymer.
Described organic polymer is polyvinyl alcohol (referred to as PVA) or polymethyl methacrylate (referred to as PMMA).
Described organic solvent is N-cyclohexyl pyrrolidones (referred to as CHP)
Compared with the prior art the present invention, has the following advantages:
(1) MoS used in the present invention
2, MoSe
2nanometer sheet can be used the preparation of ultrasonic liquid-phase stripping method on a large scale, at an easy rate, and the CVD preparation process of comparing Graphene complexity in correlation technique effectively reduces cost.
(2) in the present invention based on MoS
2, MoSe
2the saturated absorbing body device of nanometer sheet, under multi-wavelength's laser and pulsewidth condition, all shows than the better saturated absorption performance of Graphene, and result of calculation shows simultaneously, MoS in the present invention
2, MoSe
2the saturated absorbing body device of preparation has the quality factor higher than the similar device of Graphene (Figure of merit, FOM, is shown in Fig. 3).
Accompanying drawing explanation
Fig. 1 the present invention is based on MoS
2, MoSe
2normalized transmittance-Intensity response figure of the saturable absorber device of two-dimensional nano sheet, in this figure, experiment condition is 800nm, the laser that pulsewidth is 100fs, laboratory sample is pressed the preparation of method described in embodiment 2.Can see MoS
2, MoSe
2two-dimensional nano sheet saturable absorber utensil has obvious light saturated absorption character, and its effect is better than the similar device based on Graphene.
Fig. 2 the present invention is based on MoS
2, MoSe
2normalized transmittance-Intensity response figure of the saturable absorber device of two-dimensional nano sheet, in this figure, experiment condition is 532nm, the laser that pulsewidth is 100ps.Laboratory sample is pressed the preparation of method described in embodiment 1.Can see MoS
2, MoSe
2two-dimensional nano sheet saturable absorber utensil has obvious light saturated absorption character, and its effect is better than the similar device based on Graphene.
Fig. 3 is the result of calculation of data in Fig. 1, Fig. 2.Result shows, under two kinds of different conditions, based on MoS
2, MoSe
2two-dimensional nano sheet saturable absorber device all shows than the better quality factor of Graphene similar device (FOM).
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated; but these explanations can not be understood to limit scope of the present invention; protection scope of the present invention is limited by the claims of enclosing, and any change on the claims in the present invention basis is all protection scope of the present invention.
The present invention is based on MoS
2, MoSe
2the saturable absorber device of two-dimensional nano sheet, comprises the matrix that is encapsulated in the interior nano material as saturable absorber of transparent vessel and this saturable absorber of carrying, and the nano material of described saturable absorber is MoS
2, or MoSe
2two-dimensional nano sheet, described matrix is organic solvent or organic polymer.
Embodiment 1
How the present embodiment explanation is used N-cyclohexyl pyrrolidones (referred to as CHP) as dispersant, preparation MoS
2or MoSe
2two-dimensional nano sheet organic dispersions as the method for saturable absorber.
(1) take a certain amount of MoS
2or MoSe
2powder, then joins in CHP solvent, and controlled concentration is 7.5g/L, then uses the ultrasonic 90min of ultrasonic rod of 285W.In this process, material crystals structure starts to be stripped from and to be distributed in CHP solvent between layers.
(2), by the centrifugal 90min of 1500rmp rotating speed after the standing 24h of above-mentioned dispersion liquid, get upper strata 1/2 clear liquid and obtain stablizing MoS
2or MoSe
2the CHP dispersion liquid of two-dimensional nano sheet.
(3) MoS
2or MoSe
2the CHP dispersion liquid of two-dimensional nano sheet is loaded in the transparent sealing container with optics evenness, can be used as saturable absorber device.Experimental result is shown in Fig. 2 and Fig. 3.
Embodiment 2
How the present embodiment explanation prepares the MoS being carried in polymer P MMA
2or MoSe
2two-dimensional nano sheet saturable absorber.
(1) get MoS
2or MoSe
2powder joins in CHP, and concentration is 7.5g/L, then uses the ultrasonic 90min of ultrasonic rod of 285W.In this process, material crystals structure starts to be stripped from and to be distributed in CHP solvent between layers.
(2), by the centrifugal 90min of 1500rmp rotating speed after the standing 24h of above-mentioned dispersion liquid, get upper strata 1/2 clear liquid and obtain stablizing MoS
2or MoSe
2the CHP dispersion liquid of two-dimensional nano sheet.
(3) get prepared two-dimensional nano sheet CHP dispersion liquid 20ml, put into the dry 2h of 100 ℃ of 0.2MPa of vacuum drying chamber, with remove portion organic solvent CHP, obtain the higher two-dimensional nano sheet CHP dispersion liquid of 10ml left and right concentration.
(4) 1g PMMA powder is joined in 20ml CHP solution, after heating stirring and dissolving, mix with the two-dimensional nano sheet CHP dispersion liquid of gained in step (4).
(5) rotating speed with 1000rmp is spin-coated on the dispersion liquid containing PMMA of gained in (5) on the K9 optical glass of well cutting several times.
(6) the careful good K9 sheet glass of spin coating being transferred in vacuum drying chamber on pre-prepd horizontal plane, the dry 24h of 0.5MPa at 100 ℃, volatilizees solvent completely.Horizontal plane is used optical adjusting frame, and through level meter, adjustment obtains.Bone dry obtains being carried on the MoS in PMMA
2two-dimensional nano sheet saturable absorber device.
Experimental result is shown in Fig. 1 and Fig. 3.
Embodiment 3
How the present embodiment explanation prepares MoS
2two-dimensional nano sheet and the MoS that is carried on polymer P VA
2two-dimensional nano sheet saturable absorber.
(1) measure 50ml deionized water, add 0.5g sodium taurocholate powder, obtain the sodium taurocholate solution of 10mg/ml.
(2) take 0.375g MoS
2powder is blended in above-mentioned sodium taurocholate solution, the rear ultrasonic 120min of ultrasonic rod that uses 285W after uniform stirring.
(3), by the centrifugal 90min of 1500rpm rotating speed after the standing 24h of above-mentioned dispersion liquid, get upper strata 1/2 clear liquid and obtain stablizing MoS
2the aqueous dispersions of two-dimensional nano sheet.
(4) 1g PVA powder is joined in 20ml water, in magnetic stirring apparatus, be heated to 80 ℃ and stir 2h, make powder dissolution.
(5) by the 20ml PVA aqueous solution and 25ml MoS
2two-dimensional nano sheet dispersion liquid mixes, then pours in inner wall smooth even curface ware.
(6) whole surface plate is put on the preprepared horizontal plane of drying box and is dried 2 days, obtains smooth dry PVA film.Horizontal plane.Horizontal plane is used optical adjusting frame, and through level meter, adjustment obtains.
(7) remove the part of irregularity, obtain containing MoS
2two-dimensional nano sheet PVA film, can be used as saturable absorber device and uses.
Claims (4)
1. one kind based on MoS
2, MoSe
2the saturable absorber device of two-dimensional nano sheet, comprises the matrix that is encapsulated in the interior nano material as saturable absorber of transparent vessel and this saturable absorber of carrying, it is characterized in that: the nano material of described saturable absorber is MoS
2, or MoSe
2two-dimensional nano sheet.
According to claimed in claim 1 based on MoS
2, MoSe
2the saturable absorber device of two-dimensional nano sheet, is characterized in that: described matrix is organic solvent or organic polymer.
According to claimed in claim 2 based on MoS
2, MoSe
2the saturable absorber device of two-dimensional nano sheet, is characterized in that: described organic polymer is polyvinyl alcohol or polymethyl methacrylate.
According to claimed in claim 2 based on MoS
2, MoSe
2the saturable absorber device of two-dimensional nano sheet, is characterized in that: described organic solvent is N-cyclohexyl pyrrolidones.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071215A (en) * | 2015-08-27 | 2015-11-18 | 浙江大学 | Purpose of CaCuSi4O10 two-dimensional crystal, and saturation absorber device composed of the crystal |
| CN105098585A (en) * | 2015-08-27 | 2015-11-25 | 浙江大学 | Use of SrCuSi4O10 two-dimensional crystal and saturated absorber device formed by the same |
| CN105098586A (en) * | 2015-08-27 | 2015-11-25 | 浙江大学 | Application of BaCuSi4O10 two-dimensional crystals and saturable absorber device constituted by BaCuSi4O10 two-dimensional crystals |
| CN106865616A (en) * | 2017-03-30 | 2017-06-20 | 华南师范大学 | The method for preparing the porous two-dimentional molybdenum disulfide nano sheet of high density |
| WO2018076522A1 (en) * | 2016-10-31 | 2018-05-03 | 中国科学院苏州纳米技术与纳米仿生研究所 | Saturable absorption mirror of a composite structure |
| CN108054631A (en) * | 2017-12-11 | 2018-05-18 | 深圳大学 | Saturable absorber device based on perovskite material and preparation method thereof |
| CN105098576B (en) * | 2015-08-27 | 2018-05-29 | 浙江大学 | Cu2MoS4The purposes of two dimensional crystal and its saturated absorbing body device of composition |
| CN109167245A (en) * | 2018-09-07 | 2019-01-08 | 中国科学院西安光学精密机械研究所 | Saturable absorption preparation and reflective, transmission-type saturable absorber |
| CN109361142A (en) * | 2018-09-06 | 2019-02-19 | 浙江大学 | It is a kind of based on the saturable absorber device of TiN nano material and application |
| CN109361141A (en) * | 2018-09-06 | 2019-02-19 | 浙江大学 | It is a kind of based on the saturable absorber device of boron nanometer sheet and application |
| WO2019134111A1 (en) * | 2018-01-05 | 2019-07-11 | 深圳大学 | Mid-infrared optical fiber laser |
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2013
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105098585B (en) * | 2015-08-27 | 2018-05-29 | 浙江大学 | SrCuSi4O10The purposes of two dimensional crystal and its saturated absorbing body device of composition |
| CN105098585A (en) * | 2015-08-27 | 2015-11-25 | 浙江大学 | Use of SrCuSi4O10 two-dimensional crystal and saturated absorber device formed by the same |
| CN105098586A (en) * | 2015-08-27 | 2015-11-25 | 浙江大学 | Application of BaCuSi4O10 two-dimensional crystals and saturable absorber device constituted by BaCuSi4O10 two-dimensional crystals |
| CN105071215A (en) * | 2015-08-27 | 2015-11-18 | 浙江大学 | Purpose of CaCuSi4O10 two-dimensional crystal, and saturation absorber device composed of the crystal |
| CN105071215B (en) * | 2015-08-27 | 2018-08-07 | 浙江大学 | CaCuSi4O10The purposes of two dimensional crystal and its saturated absorbing body device of composition |
| CN105098576B (en) * | 2015-08-27 | 2018-05-29 | 浙江大学 | Cu2MoS4The purposes of two dimensional crystal and its saturated absorbing body device of composition |
| CN105098586B (en) * | 2015-08-27 | 2018-05-29 | 浙江大学 | BaCuSi4O10The purposes of two dimensional crystal and its saturated absorbing body device of composition |
| US11888284B2 (en) | 2016-10-31 | 2024-01-30 | Qingdao Yichenleishuo Technology Co., Ltd | Saturable absorber mirror of composite structure |
| WO2018076522A1 (en) * | 2016-10-31 | 2018-05-03 | 中国科学院苏州纳米技术与纳米仿生研究所 | Saturable absorption mirror of a composite structure |
| CN106865616B (en) * | 2017-03-30 | 2018-03-27 | 华南师范大学 | The method for preparing the porous two-dimentional molybdenum disulfide nano sheet of high density |
| CN106865616A (en) * | 2017-03-30 | 2017-06-20 | 华南师范大学 | The method for preparing the porous two-dimentional molybdenum disulfide nano sheet of high density |
| CN108054631A (en) * | 2017-12-11 | 2018-05-18 | 深圳大学 | Saturable absorber device based on perovskite material and preparation method thereof |
| WO2019134111A1 (en) * | 2018-01-05 | 2019-07-11 | 深圳大学 | Mid-infrared optical fiber laser |
| CN109361142A (en) * | 2018-09-06 | 2019-02-19 | 浙江大学 | It is a kind of based on the saturable absorber device of TiN nano material and application |
| CN109361141A (en) * | 2018-09-06 | 2019-02-19 | 浙江大学 | It is a kind of based on the saturable absorber device of boron nanometer sheet and application |
| CN109167245A (en) * | 2018-09-07 | 2019-01-08 | 中国科学院西安光学精密机械研究所 | Saturable absorption preparation and reflective, transmission-type saturable absorber |
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Application publication date: 20141119 |