CN106129799A - Mixed mode-locking laser instrument based on Graphene - Google Patents
Mixed mode-locking laser instrument based on Graphene Download PDFInfo
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- CN106129799A CN106129799A CN201610767995.3A CN201610767995A CN106129799A CN 106129799 A CN106129799 A CN 106129799A CN 201610767995 A CN201610767995 A CN 201610767995A CN 106129799 A CN106129799 A CN 106129799A
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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
- H01S3/1109—Active mode locking
-
- 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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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
Present invention is disclosed a kind of mixed mode-locking laser instrument based on Graphene, described mixed mode-locking laser instrument includes laser instrument annular chamber and is positioned at some optical fiber of laser instrument annular chamber, it is pasted with graphene film on described optical fiber, utilizing saturated absorption characteristic that Graphene is good to the pulse width of the laser instrument that narrows, the active mode locking in conjunction with laser instrument amplitude or phase-modulation realizes mixed mode-locking.In the present invention, Graphene is as saturated absorbing body during laser mode locking, has the advantage such as low absorption intensity, supper-fast recovery time, modulation depth is adjustable, wide band adjustability, such that it is able to realize the ultrashort pulse laser of more high repetition frequency.
Description
Technical field
The invention belongs to technical field of optical fiber communication, be specifically related to a kind of mixed mode-locking laser instrument based on Graphene.
Background technology
Optical fiber laser operates on a large amount of longitudinal modes being positioned at gain bandwidth simultaneously.The operating of many longitudinal modes is to be swashed by with optical fiber
The longitudinal mode spacing of light device compares what the widest gain spectral determined.If all patterns all independent operation, its phasetophase does not determine
Relation, then the interference term average effect in total distribution of light intensity is zero.Each longitudinal mode Phase synchronization is made, arbitrarily by certain technology
The PGC demodulation of adjacent longitudinal mode at a constant value, then can produce ultrashort laser pulse i.e. mode locking pulse, and such laser instrument claims
As mode-locked laser.Mode-locked laser can be widely applied to the fields such as fiber optic communication, laser measurement and materials processing.
Current locked mode mode-locking technique is broadly divided into active mode locking, passive mode-locking and mixed mode-locking three class.
Active mode locking is to carry out periodic modulation resonator cavity parameter by outer signals, it is achieved phase place lock between each cavity longitudinal mode
Fixed a kind of mode-locking technique.It is noteworthy characterized by: inserts modulation device in laser cavity or is injected light pulse by outside,
Carry out intracavity light wave actively modulating realizing locked mode.Active mode locking can be divided into the most again mode-locking technique based on manipulator, have
Reason number harmonic mode locking technology and injecting lock mould technology.Wherein feature based on manipulator mode-locking technique be from chamber additional enter radio frequency letter
Number on the manipulator of intracavity, by this signal, the vibration light wave of intracavity is produced periodic amplitude or phase-modulation, from
And produce mode locking pulse.The major advantage of active mode locking is exactly to produce the locked mode arteries and veins of high repetition frequency and frequency-tunable
Punching, and be prone to synchronize.Optical fiber cavity length and refractive index are easily subject to the impact of external environment and the intracavity off resonance that causes, and super model
The application that instability limit active mode locking laser instrument that the pulse jitter that competition and relaxation oscillation cause produces.
Passive mode-locking is to realize ultrashort arteries and veins in the case of any active device not using manipulator etc in laser cavity
Punching output.Its ultimate principle is the dependence utilizing the nonlinear optical effect in optical fiber or other elements to input pulse intensity
Property, it is achieved each longitudinal mode PGC demodulation, and then produce ultrashort light pulse.The method being presently used for realizing passive mode-locking mainly includes
Saturable absorber, nonlinear polarization rotation and properties in nonlinear optical loop mirror mode-locking technique.Wherein saturated absorbing body locked mode be
Intracavity attachment saturated absorbing body, when light pulse is by saturated absorbing body, owing to the partition losses at edge is more than middle body
Loss so that light pulse is narrowed during by absorber.The major advantage of saturated absorbing body passive mode-locking weighs exactly
Complex frequency is more stable, and mode locking pulse pulsewidth is narrower.But mode locking pulse repetition rate and laser instrument produced by passive mode-locking
Chamber length is inversely proportional to, and repetition rate to be realized is the passive mode-locking of GHz magnitude, needs laser cavity to be as short as cm magnitude, it is achieved the most tired
Difficult.
Passive mode-locking technology is produced mixed mode-locking ultrashort pulse and active mode locking technique produces high repetition frequency
Feature combines, to obtain narrow spaces, and high-repetition-rate and stable soliton pulse sequence.
Therefore, it is necessary in view of the above problems to provide a kind of mixed mode-locking laser instrument based on Graphene.
Summary of the invention
It is an object of the invention to provide a kind of mixed mode-locking laser instrument based on Graphene, utilize the saturated suction of Graphene
The property received combines active mode locking that amplitude (phase place) modulates to realize mixed mode-locking.
To achieve these goals, the technical scheme that the embodiment of the present invention provides is as follows:
A kind of mixed mode-locking laser instrument based on Graphene, described mixed mode-locking laser instrument include laser instrument annular chamber and
It is positioned at some optical fiber of laser instrument annular chamber, described optical fiber is pasted with graphene film, utilize good saturated of Graphene
Absorption characteristic narrows the pulse width of laser instrument, and the active mode locking in conjunction with laser instrument amplitude or phase-modulation realizes mixing lock
Mould.
As a further improvement on the present invention, described graphene film is attached at fiber end face or the throwing of side rubbing down optical fiber
Bright finish.
As a further improvement on the present invention, described graphene film is single-layer graphene, multi-layer graphene or oxidized
The graphene polymer of reduction.
The technical scheme that another embodiment of the present invention provides is as follows:
A kind of mixed mode-locking laser instrument based on Graphene, includes in the annular chamber of described mixed mode-locking laser instrument adjusting successively
Device processed, the first Polarization Controller, erbium-doped fiber amplifier, bonder, the optical fiber being pasted with graphene film and the second polarization control
Device processed, manipulator applies, by microwave signal, come with multiple patterns that modulation is produced in annular chamber by erbium-doped fiber amplifier
Realizing active mode locking, utilize saturated absorption characteristic that Graphene is good to the pulse width of the laser instrument that narrows, bonder is for defeated
Go out to observe spectrum and impulse waveform and compare.
As a further improvement on the present invention, described graphene film is attached at fiber end face or the throwing of side rubbing down optical fiber
Bright finish.
As a further improvement on the present invention, described graphene film is single-layer graphene, multi-layer graphene or oxidized
The graphene polymer of reduction.
As a further improvement on the present invention, described manipulator uses rf modulations or laser to inject the mode of locking modulation
Realize active mode locking.
As a further improvement on the present invention, described manipulator is intensity modulator or phase-modulator.
As a further improvement on the present invention, described mixed mode-locking laser instrument based on Graphene is solid state laser or sky
Between laser instrument.
The invention has the beneficial effects as follows:
Graphene film is attached on optical fiber access in annular laser cavity as saturated absorbing body by laser instrument, utilizes stone
The ink good saturated absorption characteristic of alkene narrows the pulse width of laser instrument, and the active in conjunction with laser instrument amplitude or phase-modulation is locked
Mould realizes mixed mode-locking；
Graphene, as saturated absorbing body during laser mode locking, has low absorption intensity, supper-fast recovery time, modulation
The advantage such as depth adjustable, wide band adjustability, such that it is able to realize the ultrashort pulse laser of more high repetition frequency.
Accompanying drawing explanation
Fig. 1 is the structural representation that in first embodiment of the invention, Graphene adds laser instrument annular chamber；
Fig. 2 is the module diagram of mixed mode-locking laser instrument based on Graphene in second embodiment of the invention；
Fig. 3 a is the signal waveform of the pulse laser of the active mode locking laser instrument output being not added with Graphene；
Fig. 3 b is the signal waveform of the burst pulse of the mixed mode-locking laser instrument output at fiber end face attachment Graphene；
Fig. 3 c is the spectrogram of the pulse laser of the mode-locked laser output being not added with Graphene；
Fig. 3 d is the spectrogram of the burst pulse of the mixed mode-locking laser instrument output at fiber end face attachment Graphene.
Detailed description of the invention
Describe the present invention below with reference to detailed description of the invention shown in the drawings.But these embodiments are also
It is not intended to the present invention, structure that those of ordinary skill in the art is made, method or functionally according to these embodiments
Conversion is all contained in protection scope of the present invention.
A kind of based on Graphene mixed mode-locking laser instrument in first embodiment of the invention is to active mode locking laser
The improvement of device, is attached directly to Graphene fiber end face and adds in active mode locking laser instrument annular chamber, utilizes its good satisfying
And absorbability, realize narrowing of active mode locking pulse.
Specifically, shown in ginseng Fig. 1, mixed mode-locking laser instrument includes laser instrument annular chamber 11 and is positioned at laser instrument annular chamber
Interior some optical fiber 12, optical fiber is pasted with graphene film 13, and the saturated absorption characteristic utilizing Graphene good is sharp to narrow
The pulse width of light device, the active mode locking in conjunction with laser instrument amplitude or phase-modulation realizes mixed mode-locking.
In present embodiment, graphene film 13 is attached at fiber end face, and optical fiber can also use in other embodiments
Side rubbing down optical fiber, graphene film is attached at the burnishing surface of side rubbing down optical fiber.
Preferably, graphene film is single-layer graphene, multi-layer graphene or the graphene polymer of oxidized reduction
Deng.
The saturated absorption that mainly make use of Graphene combines the active mode locking that amplitude (phase place) modulates and realizes mixing lock
Mould.Graphene (graphene) is a kind of material of the cellular hexagonal lattice being become two dimension by the carbon atom close-packed arrays of monolayer,
It has a lot of unique photoelectric characteristic.Graphene has low absorption intensity, supper-fast recovery time, tune when Mode-locking For Lasers
The advantages such as depth adjustable processed, wide band adjustability.
Utilize the mixed mode-locking laser instrument that phase-modulation and deflection nonlinearity effect combine to produce high repetition frequency narrow arteries and veins
Rush sequence, but due to deflection nonlinearity rotary tuning difficulty, it is impossible to support that in any wavelength, and actual application, environmental effect is relatively
Greatly, intracavity needs relatively long optical fiber, and to produce sufficiently large nonlinear phase shift, the birefringence that temperature stress change causes rises
Volt also can affect locked mode process.The present invention for these shortcomings, have employed the saturated absorption that this characteristic of Graphene is good just
Body narrows pulsewidth, overcomes these above-mentioned shortcomings simultaneously, optimizes the performance of mixed mode-locking.
Shown in ginseng Fig. 2, a kind of mixed mode-locking laser instrument based on Graphene, the annular chamber of this mixed mode-locking laser instrument depends on
Secondary include manipulator the 10, first Polarization Controller 20, erbium-doped fiber amplifier 30, bonder 40, be pasted with graphene film
Optical fiber 50 and the second Polarization Controller 60, manipulator 10 applies by microwave signal 70, with modulation by erbium-doped fiber amplifier 30
The multiple patterns produced in annular chamber realize active mode locking, utilize the saturated absorption characteristic that Graphene is good to the laser that narrows
The pulse width of device, bonder 40 is used for exporting observation spectrum and impulse waveform and comparing, wherein, is pasted with Graphene thin
The optical fiber 50 of film is the structure of Fig. 1 in the first embodiment, is the most no longer described in detail.
Wherein, the mode that manipulator uses rf modulations or laser to inject locking modulation realizes active mode locking, this manipulator
For intensity modulator or phase-modulator, present embodiment illustrates as a example by intensity modulator, utilizes modulators modulate
The amplitude of light field in annular chamber.
Specifically, manipulator is with frequency f equal to (or integer times) mode spacingmIn modulation ring-cavity, light field shakes
Width, cavity loss is equally by with frequency fmModulation because loss the least, the number of photons of generation is the most, thus intracavity light field also with
Same frequency is modulated, and the fine difference in this light intensity is constantly strengthened after repeatedly the coming and going of intracavity, and laser instrument just can be steady
Surely a mode locking pulse sequence is exported.Simultaneously when light pulse is by this absorber of Graphene, when being strong enough that graphite
Alkene is saturated, and its limit alar part loss is more than the loss of middle body, and result light pulse is the narrowest during by Graphene
Change.The ultrashort pulse of high repetition frequency is thus achieved by combining both technology.
In the present invention one specific embodiment, input microwave signal 70 frequency is 10GHz, and the bias voltage of manipulator 10 is
0V, erbium-doped fiber amplifier 30 output 200mW.Output signal arteries and veins is observed by bonder 40 output 500GHz oscillograph
Rush waveform, use spectroanalysis instrument to observe output signal spectrum by bonder 40 output simultaneously.Second Polarization Controller 60 is used
In polarization state will be inputted, it is that the modulation efficiency of manipulator 10 maximizes.First Polarization Controller 20 is for optimizing laser cavity
Polarization state is to obtain maximum pulse output power and best locked mode effect.
Can be measured by above-mentioned experiment and do not add Graphene and add the signal of the mode locking pulse that Graphene laser instrument produces
Waveform and spectrogram, shown in concrete ginseng Fig. 3 a～3d.
Compared it is apparent that adding stone by the output mode locking pulse oscillogram that is embodied as in effect of the present embodiment
After ink alkene carries out saturated absorption, due to the saturated absorption characteristic of Graphene, mode locking pulse substantially narrows.Same by locked mode arteries and veins
Washing spectrum off and compare it can be seen that pulse spectrum broadening after adding Graphene, side light mode locking pulse narrows.By above-mentioned knot
Fruit can show that Graphene has narrowed mode locking pulse, it is achieved that the burst pulse mixed mode-locking laser instrument of high repetition frequency.
It should be appreciated that in above-mentioned embodiment mixed mode-locking laser instrument based on Graphene can with solid state laser or
Space laser devices etc., citing illustrates the most one by one.
As can be seen from the above technical solutions, the method have the advantages that
Graphene film is attached on optical fiber access in annular laser cavity as saturated absorbing body by laser instrument, utilizes stone
The ink good saturated absorption characteristic of alkene narrows the pulse width of laser instrument, and the active in conjunction with laser instrument amplitude or phase-modulation is locked
Mould realizes mixed mode-locking；
Graphene, as saturated absorbing body during laser mode locking, has low absorption intensity, supper-fast recovery time, modulation
The advantage such as depth adjustable, wide band adjustability, such that it is able to realize the ultrashort pulse laser of more high repetition frequency.
It is to be understood that, although this specification is been described by according to embodiment, but the most each embodiment only comprises one
Individual independent technical scheme, this narrating mode of description is only that for clarity sake those skilled in the art should will say
Bright book is as an entirety, and the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can
With other embodiments understood.
The a series of detailed description of those listed above is only for the feasibility embodiment of the present invention specifically
Bright, they also are not used to limit the scope of the invention, all equivalent implementations made without departing from skill of the present invention spirit
Or change should be included within the scope of the present invention.
Claims (9)
1. a mixed mode-locking laser instrument based on Graphene, described mixed mode-locking laser instrument includes laser instrument annular chamber and position
Some optical fiber in laser instrument annular chamber, it is characterised in that be pasted with graphene film on described optical fiber, utilize Graphene good
Good saturated absorption characteristic narrows the pulse width of laser instrument, and the active mode locking in conjunction with laser instrument amplitude or phase-modulation comes real
Existing mixed mode-locking.
Mixed mode-locking laser instrument based on Graphene the most according to claim 1, it is characterised in that described graphene film
It is attached at fiber end face or the burnishing surface of side rubbing down optical fiber.
Mixed mode-locking laser instrument based on Graphene the most according to claim 1, it is characterised in that described graphene film
For single-layer graphene, multi-layer graphene or the graphene polymer of oxidized reduction.
4. a mixed mode-locking laser instrument based on Graphene, it is characterised in that in the annular chamber of described mixed mode-locking laser instrument
Include successively manipulator, the first Polarization Controller, erbium-doped fiber amplifier, bonder, be pasted with graphene film optical fiber and
Second Polarization Controller, manipulator applies, by microwave signal, produce by erbium-doped fiber amplifier with modulation in annular chamber
Multiple patterns realize active mode locking, utilize saturated absorption characteristic that Graphene is good to the pulse width of the laser instrument that narrows, coupling
Clutch is used for exporting observation spectrum and impulse waveform and comparing.
Mixed mode-locking laser instrument based on Graphene the most according to claim 4, it is characterised in that described graphene film
It is attached at fiber end face or the burnishing surface of side rubbing down optical fiber.
Mixed mode-locking laser instrument based on Graphene the most according to claim 4, it is characterised in that described graphene film
For single-layer graphene, multi-layer graphene or the graphene polymer of oxidized reduction.
Mixed mode-locking laser instrument based on Graphene the most according to claim 4, it is characterised in that described manipulator uses
Rf modulations or laser inject the mode of locking modulation and realize active mode locking.
Mixed mode-locking laser instrument based on Graphene the most according to claim 4, it is characterised in that described manipulator is strong
Degree manipulator or phase-modulator.
Mixed mode-locking laser instrument based on Graphene the most according to claim 4, it is characterised in that described based on Graphene
Mixed mode-locking laser instrument be solid state laser or space laser device.
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| CN201610767995.3A CN106129799A (en) | 2016-08-30 | 2016-08-30 | Mixed mode-locking laser instrument based on Graphene |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039880A (en) * | 2017-06-26 | 2017-08-11 | 吉林大学 | Main passive mixed mode-locking optical fiber laser pulse generating system |
| CN107039877A (en) * | 2017-06-26 | 2017-08-11 | 吉林大学 | A kind of high stability optical pulse generator |
| CN107069415A (en) * | 2017-06-26 | 2017-08-18 | 吉林大学 | The passive mixed mode-locking optical pulse generator of master based on graphene saturable absorber |
| CN107093838A (en) * | 2017-06-26 | 2017-08-25 | 吉林大学 | Utilize the digitlization optical pulse generation device of piezoelectric ceramics feedback control |
| CN107134711A (en) * | 2017-06-26 | 2017-09-05 | 吉林大学 | Optical pulse generator based on piezoelectric ceramics feedback control |
| CN107134712A (en) * | 2017-06-26 | 2017-09-05 | 吉林大学 | A kind of passive mixed mode-locking optical fiber laser of master with temperature-compensating |
| CN107302176A (en) * | 2017-06-26 | 2017-10-27 | 吉林大学 | A kind of passive mixed mode-locking soliton generation system of high stability master |
| CN107302177A (en) * | 2017-06-26 | 2017-10-27 | 吉林大学 | The passive mixed mode-locking pulse generating system of master based on black phosphorus saturable absorber |
| CN107800031A (en) * | 2017-11-20 | 2018-03-13 | 张家港初恒激光科技有限公司 | A kind of new laser fiber head position control |
| CN108631144A (en) * | 2017-03-21 | 2018-10-09 | 中国移动通信有限公司研究院 | A kind of Semiconductor laser device and method |
| CN108631143A (en) * | 2017-03-21 | 2018-10-09 | 中国移动通信有限公司研究院 | A kind of Semiconductor laser device and method |
| WO2019047507A1 (en) * | 2017-09-05 | 2019-03-14 | 深圳市太赫兹科技创新研究院有限公司 | Optical fiber laser |
| CN112909716A (en) * | 2021-01-20 | 2021-06-04 | 华中科技大学 | Full polarization-maintaining femtosecond fiber laser based on hybrid modulation mode locking |
| CN113725704A (en) * | 2020-05-25 | 2021-11-30 | 北京石墨烯研究院 | Saturable absorber and all-fiber mode-locked laser |
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| CN108631144A (en) * | 2017-03-21 | 2018-10-09 | 中国移动通信有限公司研究院 | A kind of Semiconductor laser device and method |
| CN108631143B (en) * | 2017-03-21 | 2019-10-08 | 中国移动通信有限公司研究院 | A kind of Semiconductor laser device and method |
| CN108631144B (en) * | 2017-03-21 | 2019-09-13 | 中国移动通信有限公司研究院 | A kind of Semiconductor laser device and method |
| CN108631143A (en) * | 2017-03-21 | 2018-10-09 | 中国移动通信有限公司研究院 | A kind of Semiconductor laser device and method |
| CN107039877B (en) * | 2017-06-26 | 2019-06-18 | 吉林大学 | A kind of high stability optical pulse generator |
| CN107134712A (en) * | 2017-06-26 | 2017-09-05 | 吉林大学 | A kind of passive mixed mode-locking optical fiber laser of master with temperature-compensating |
| CN107302176A (en) * | 2017-06-26 | 2017-10-27 | 吉林大学 | A kind of passive mixed mode-locking soliton generation system of high stability master |
| CN107302177A (en) * | 2017-06-26 | 2017-10-27 | 吉林大学 | The passive mixed mode-locking pulse generating system of master based on black phosphorus saturable absorber |
| CN107134711A (en) * | 2017-06-26 | 2017-09-05 | 吉林大学 | Optical pulse generator based on piezoelectric ceramics feedback control |
| CN107093838A (en) * | 2017-06-26 | 2017-08-25 | 吉林大学 | Utilize the digitlization optical pulse generation device of piezoelectric ceramics feedback control |
| CN107039880A (en) * | 2017-06-26 | 2017-08-11 | 吉林大学 | Main passive mixed mode-locking optical fiber laser pulse generating system |
| CN107069415A (en) * | 2017-06-26 | 2017-08-18 | 吉林大学 | The passive mixed mode-locking optical pulse generator of master based on graphene saturable absorber |
| CN107039877A (en) * | 2017-06-26 | 2017-08-11 | 吉林大学 | A kind of high stability optical pulse generator |
| WO2019047507A1 (en) * | 2017-09-05 | 2019-03-14 | 深圳市太赫兹科技创新研究院有限公司 | Optical fiber laser |
| CN107800031A (en) * | 2017-11-20 | 2018-03-13 | 张家港初恒激光科技有限公司 | A kind of new laser fiber head position control |
| CN113725704A (en) * | 2020-05-25 | 2021-11-30 | 北京石墨烯研究院 | Saturable absorber and all-fiber mode-locked laser |
| CN112909716A (en) * | 2021-01-20 | 2021-06-04 | 华中科技大学 | Full polarization-maintaining femtosecond fiber laser based on hybrid modulation mode locking |
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Application publication date: 20161116 |