CN108321671A - A kind of passive mode-locking fiber laser based on graded index multimode fiber saturable absorber - Google Patents
A kind of passive mode-locking fiber laser based on graded index multimode fiber saturable absorber Download PDFInfo
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- CN108321671A CN108321671A CN201810176960.1A CN201810176960A CN108321671A CN 108321671 A CN108321671 A CN 108321671A CN 201810176960 A CN201810176960 A CN 201810176960A CN 108321671 A CN108321671 A CN 108321671A
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- fiber
- graded index
- laser
- saturable absorber
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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
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses a kind of passive mode-locking fiber lasers based on graded index multimode fiber saturable absorber, are related to optical fiber laser field.The passive mode-locking fiber laser uses ring cavity structure, including semiconductor pumping sources and the wavelength division multiplexer, Er-doped fiber, the unrelated isolator of polarization, graded index fiber saturable absorber device, the output coupler that sequentially form light circuit.Wherein, graded index fiber saturable absorber device plays the role of saturable absorber based on the non-linear multimode interference effect in graded index fiber, it is made of one section of graded index multimode fiber of welding among two section single-mould fibers, saturable absorber device both ends are fixed on moveable fiber clamp, to change fiber lengths.The optical fiber laser is truly realized the all-fiber of mode-locked laser, has many advantages, such as that simple in structure, damage threshold is high, greatly improves the stability and practicability of mode-locked laser.
Description
Technical field
The invention patent relates to optical fiber laser fields, and in particular to one kind is based on " graded index multimode fiber can satisfy
And absorber " mode locked fiber laser more particularly to it is a kind of for mode locking, Q adjusting optical fiber laser saturable absorber.
Background technology
Pulse width is the ultra-short pulse laser of hundred femtosecond magnitudes due to narrow pulse width, high-peak power, wideband
The advantages that spectral width, basic research, material retrofit, national defence, biotechnology, medical treatment, etc. fields have a wide range of applications,
Its development allows us to be directly observed many ultrafast responses in the researchs such as chemistry, biology, becomes national war
Omit one of the core technology with high-end industry.Currently, generally use passive mode-locking technology obtains ultra-short pulse laser.Relative to master
Dynamic mode locked fiber laser, passive mode-locking fiber laser have the advantage become apparent, such as：Without spatial light modulator,
It is simple in structure；Saturable absorber recovery time is short, and the pulse width of generation is narrower.
Realize that the most key device of passive mode-locking fiber laser is saturable absorber, performance is for ultrashort pulse
Output characteristics have vital influence.The used saturable absorber of passive mode-locking fiber laser includes mainly partly leading
Body saturable absorbing mirror, carbon nanotube and using graphene as New Two Dimensional material of representative etc..Wherein, semiconductor saturable is inhaled
Mirror is received as the saturable absorber material being most widely used at present, however it remains some disadvantages, when its characteristic is by making
Design parameter determine, expensive, controllability is poor, is limited by material, it is difficult to generate than a picosecond shorter pulse.In addition to
Graphene, other two-dimensional materials include that graphene oxide, topological insulator such as bismuth telluride and transient metal sulfide etc. are also seen
It observes with good non-linear saturable absorption effect, although being widely applied in mode locked fiber laser at present,
But absorbing material is more sensitive to extraneous pollution and causes to be easier to go bad；And the damage threshold of absorbing material is also very big
The output power for limiting laser.
In recent years, researcher in multimode fibre non-linear multimode interference effect and self-focusing effect be theory
Basis, it is proposed that based on generated in graded index multimode fiber include four-wave mixing effect, Self-phase modulation and intersection
Numerical model of the nonlinear effect as saturable absorber including phase-modulation etc..When graded index fiber is specific
When length, saturable absorber can be played the role of.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of simple in structure, lower-cost based on Graded-index multimode
The all -fiber femtosecond mode locked fiber laser of optical fiber saturable absorber device；
Primary Component-graded index saturable absorber device of the present invention is based primarily upon non-in graded index fiber
Linear multimode interference effect.Its principle can be explained as follows：Due in graded index multimode fiber Self-phase modulation and
The nonlinear effects such as Cross-phase Modulation can cause the change of equivalent refractive index, finally so that high in graded index multimode fiber
Self-focusing length under peak power pulses and the difference under low peak power pulse.For the graded index light of specific length
Fibre, the pulse of high-peak power can self-focusing be to the fibre core of single mode optical fiber at just, and the optical signal of low peak power entrance
It is only to be lost and decay in the covering of single mode optical fiber, at this point, graded index fiber has saturable absorption bulk properties.
Mode locked fiber laser provided by the invention is ring cavity structure comprising semiconductor pumping sources and is sequentially formed
The wavelength division multiplexer of light circuit, the Er-doped fiber for generating the inverted population needed for laser, for ensuring that laser unidirectionally passes
It is the unrelated isolator of defeated polarization, defeated as the graded index fiber saturable absorber device of mode locking element and for laser
The output coupler gone out.Wherein, the both ends of graded index multimode fiber saturable absorber device be separately fixed at two can
Between mobile fibre clip, it is used for stretching optical fiber, changes the length of graded index fiber.
The pumping source and wavelength division multiplexer, Er-doped fiber, the unrelated isolator of polarization, above-mentioned graded index saturable
Absorber devices, output coupler use the automatic welding of optical fiber splicer.
The direct output end of the output coupler and the splitting ratio of coupled output are more than 70:30, for the defeated of laser
Go out.
The output wavelength of the further semiconductor pumping sources is 976nm or 1480nm.
Further the operation wavelength of the wavelength division multiplexer reflector port, isolator, coupler is in 1520nm ~ 1620nm
Wave band.
The further graded index fiber saturable absorber device is by one section of graded index multimode fiber two
Welding general single mode fiber is constituted respectively at end, is used for the maintenance and startup of mode locking, laser is in the mistake by graded index fiber
It is narrowed in journey.
Preferably, the core size of the graded index fiber is 50 μm or 62.5 μm.
Preferably, the graded index multimode fiber, length range are arranged between 7cm ~ 30cm.
Preferably, the mobile accuracy of the fiber clamp<10µm.
Preferably, the mobile range of the fiber clamp>1mm.
Compared with prior art, the modelocked fiber of the invention based on " graded index multimode fiber saturable absorber "
Laser, the advantageous effect brought are：
（1）The saturable absorber provides a kind of new method for the realization of mode locked fiber laser.
（2）The saturable absorber is simple in structure, and mechanical performance is outstanding, it is only necessary to it can be realized by fused fiber splice,
Damage threshold is high, and service life is long, can be easy to actually promote the use of suitable for high-power mode locked fiber laser.
（3）All elements or optical fiber used in the mode locked fiber laser include the saturable as mode locking element
Absorber devices, manufacture craft is highly developed, is all made of ripe commercial component or Commercial fibers, greatly reduces cost, letter
Change laser structure, improves the Stability and dependability of mode locked fiber laser.
Description of the drawings
Above description is only the general introduction of technical solution of the present invention, for the effect of concrete structure and generation to the present invention
It is further understood from, below in conjunction with the description of the drawings purpose of the present invention, feature and effect.
Mode locked fiber laser structural schematic diagram in Fig. 1 present examples.
In figure：1, semiconductor pumping sources, 2, wavelength division multiplexer, 3, Er-doped fiber, 4, the unrelated isolator of polarization, 5, saturable
Absorber devices, 6, output coupler, 7, moveable fiber clamp,
Fig. 2 is the modulation depth curve graph of graded index fiber saturable absorber device in present example.
Fig. 3 is the spectrum of Mode-locking For Lasers operating output in present example.
Fig. 4 is the pulse sequence diagram of Mode-locking For Lasers operating output in present example.
Fig. 5 is the autocorrelator trace figure of laser output pulse in present example.
Specific embodiment
Specific embodiments of the present invention are given below, it should be noted that the invention is not limited in following specific examples
In, all equivalent transformations made on the basis of the technical solutions of the present application each falls within protection scope of the present invention.Below with reference to the accompanying drawings simultaneously
In conjunction with implementing, to coming, patent of the present invention is detailed to carry out detailed, complete description.
Embodiment 1
This example provides a kind of passive mode-locking optical-fiber laser being based on " graded index fiber saturable absorber " optical fibre device
Device.Shown in referring to Fig.1, mode locked fiber laser structural schematic diagram of the invention.Pumping source 1 will be pumped by wavelength division multiplexer 2
Laser is introduced into Er-doped fiber 3, after Er-doped fiber 3 will pump light amplification, is formed oscillation in annular chamber, is swashed to generate
Light.The tail optical fiber of all elements of intracavitary all uses operating central wavelength in the general single mode fiber of 1550nm.Cardiac wave in pumping source
A length of 976nm, gain fibre core diameter are 9 μm, and the absorption coefficient of pump light is 55dB/m@1532nm, the length of gain fibre
Degree is 2.5m.The operating central wavelength for polarizing uncorrelated isolator 4 is 1550nm, its effect is to ensure that laser is unidirectional
Transmission, isolation are more than 24dB.For the operating central wavelength of output coupler 6 in 1550nm, output coupling ratio is 80:20.Wherein,
One end of 20% output is exported as laser, and 80% one end is connected with wavelength division multiplexer, constitutes ring resonator.Graded index
Optical fiber saturable absorber device 5 is placed between the unrelated isolator 4 of polarization and output coupler 6, wherein graded index fiber
Core size is 62.5 μm, and length is ~ 23.5cm.The both ends of graded index fiber saturable absorber device are separately fixed at
On moveable fiber clamp 7, by 7 stretching optical fiber of moving fiber fixture, change fiber lengths.The mobile essence of fiber clamp 7
Degree is 10 μm, and the mobile range of maximum is 1cm.
This example using 1560nm femto-second lasers as testing light source, by adjust the output power of optical fiber laser come
Measure the modulation depth of saturable absorber.It is illustrated in figure 2 the modulation depth that graded index fiber length stretches ~ 400 μm
Curve, with the increase of incident optical power, the transmitance of device gradually increases, and finally tends to be saturated.Measurement result simplification
Saturated absorption model is fitted：
；
Wherein, Δ T, IsatAnd TnsModulation depth, saturation power and unsaturation absorption coefficient are indicated respectively, are measured in experiment
The modulation depth of the saturable absorber device is 22.27%.
As shown in figure 3, when pump power is 65mW, it is based on " graded index fiber saturable absorber " optical fibre device
Passive mode-locking fiber laser mode locking pulse output light spectrogram, the wherein a length of 1572.5nm of cardiac wave, three dB bandwidth 4.8nm.It can
To see that output spectrum carries apparent Kelly sidebands, illustrate that pulse has the spy of traditional orphan under apparent negative dispersion mode locking
Property.
As shown in figure 4, it can be seen from the figure that the mode locking pulse of intracavitary is operated in a relatively steady state, pulse
Repetition rate is 19.06MHz.
Fig. 5 is shown when mode locked fiber laser is in the autocorrelator trace that stable mode-locking pulse exports pulse, and value is
506fs。
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. it is ring cavity structure a kind of passive mode-locking fiber laser comprising semiconductor pumping sources and sequentially form light and return
The wavelength division multiplexer on road, the Er-doped fiber for generating the inverted population needed for laser, for ensuring laser one-way transmission
It polarizes unrelated isolator, exported as the graded index fiber saturable absorber device of mode locking element and for laser
Output coupler, wherein the both ends of graded index multimode fiber saturable absorber device are separately fixed at two and move
Fibre clip between, be used for stretching optical fiber, change the length of graded index fiber.
2. mode locked fiber laser as described in claim 1, it is characterised in that：The pumping source and wavelength division multiplexer are mixed
Erbium optical fiber, the unrelated isolator of polarization, above-mentioned graded index saturable absorber device, output coupler use optical fiber splicer
Automatic welding.
3. mode locked fiber laser as described in claim 1, it is characterised in that：The direct output end of the output coupler with
The splitting ratio of coupled output is more than 70:30, it is used for the output of laser.
4. mode locked fiber laser as described in claim 1, it is characterised in that：The output wavelength of the semiconductor pumping sources is
976nm or 1480nm.
5. mode locked fiber laser as described in claim 1, it is characterised in that：The wavelength division multiplexer reflector port, isolation
Device, coupler operation wavelength in 1520nm ~ 1620nm wave bands.
6. mode locked fiber laser as described in claim 1, it is characterised in that：The graded index fiber saturable absorption
By one section of graded index multimode fiber both ends, welding general single mode fiber is constituted body device respectively, the maintenance for mode locking with open
Dynamic, laser is narrowed during by graded index fiber, to start and stablize femtosecond pulse.
7. graded index multimode fiber as claimed in claim 6, it is characterised in that：The fibre core of the graded index fiber
Size is 50 μm or 62.5 μm.
8. graded index multimode fiber as claimed in claim 6, it is characterised in that：The graded index multimode fiber,
Its length range is arranged between 7cm ~ 30cm.
9. mode locked fiber laser as described in claim 1, it is characterised in that：The mobile accuracy of the fiber clamp<10µ
m。
10. mode locked fiber laser as described in claim 1, it is characterised in that：The mobile range of the fiber clamp>
1mm。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810176960.1A CN108321671A (en) | 2018-03-04 | 2018-03-04 | A kind of passive mode-locking fiber laser based on graded index multimode fiber saturable absorber |
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| CN201810176960.1A CN108321671A (en) | 2018-03-04 | 2018-03-04 | A kind of passive mode-locking fiber laser based on graded index multimode fiber saturable absorber |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616862A (en) * | 2019-02-01 | 2019-04-12 | 长春理工大学 | A kind of mode locking pulse optical fiber laser of based on SMS structure |
| CN110165537A (en) * | 2019-05-22 | 2019-08-23 | 中国计量大学 | A kind of tunable wave length passive mode-locking fiber laser based on loss control |
| CN110768094A (en) * | 2019-11-27 | 2020-02-07 | 中国计量大学 | Mode locking fiber laser based on tapered multimode fiber saturable absorber |
| CN112611478A (en) * | 2020-12-08 | 2021-04-06 | 中国人民解放军军事科学院国防科技创新研究院 | Absorber temperature characteristic transient measurement device based on metalized optical fiber sensing |
| CN113131318A (en) * | 2021-03-05 | 2021-07-16 | 长春理工大学 | Tunable mode-locked fiber laser based on spiral mechanism, preparation method and output method |
| CN113161864A (en) * | 2021-04-21 | 2021-07-23 | 中国计量大学 | Coherent multi-color noise soliton mode-locked fiber laser based on SMS structure |
| CN114122893A (en) * | 2021-10-29 | 2022-03-01 | 河北工业大学 | 1-micrometer mode-locked fiber laser based on YDF-GIMF (Yttrium-lead-in-fiber-guided multi-fiber) optical fiber structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647210A (en) * | 2013-12-13 | 2014-03-19 | 复旦大学 | Gradual change waveguide based graphene saturable absorber and preparation method thereof |
| CN104409951A (en) * | 2014-11-21 | 2015-03-11 | 天津大学 | All-optical-fibre mode-locked laser based on Kerr effect of multi-mode interference device |
| CN106253040A (en) * | 2015-10-14 | 2016-12-21 | 北京信息科技大学 | A kind of mode locked fiber laser system by Graphene reflecting mirror wavelength switching |
| JP2017167405A (en) * | 2016-03-17 | 2017-09-21 | 小池 康博 | Graded-index type multimode plastic optical fiber for short distance optical signal transmission |
| CN107230927A (en) * | 2017-06-29 | 2017-10-03 | 中国计量大学 | 2 μm of mode locked fiber lasers based on SMF SIMF GIMF SMF optical fiber structures |
-
2018
- 2018-03-04 CN CN201810176960.1A patent/CN108321671A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647210A (en) * | 2013-12-13 | 2014-03-19 | 复旦大学 | Gradual change waveguide based graphene saturable absorber and preparation method thereof |
| CN104409951A (en) * | 2014-11-21 | 2015-03-11 | 天津大学 | All-optical-fibre mode-locked laser based on Kerr effect of multi-mode interference device |
| CN106253040A (en) * | 2015-10-14 | 2016-12-21 | 北京信息科技大学 | A kind of mode locked fiber laser system by Graphene reflecting mirror wavelength switching |
| JP2017167405A (en) * | 2016-03-17 | 2017-09-21 | 小池 康博 | Graded-index type multimode plastic optical fiber for short distance optical signal transmission |
| CN107230927A (en) * | 2017-06-29 | 2017-10-03 | 中国计量大学 | 2 μm of mode locked fiber lasers based on SMF SIMF GIMF SMF optical fiber structures |
Non-Patent Citations (2)
| Title |
|---|
| ELHAM NAZEMOSADAT ET AL.: "Nonlinear multimodal interference and saturable absorption using a short graded-index multimode optical fiber", 《JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS》 * |
| SHIJIE FU ET AL.: "Passive Q-switching of an all-fiber laser induced by the Kerr effect of multimode interference", 《OPTICS EXPRESS》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616862A (en) * | 2019-02-01 | 2019-04-12 | 长春理工大学 | A kind of mode locking pulse optical fiber laser of based on SMS structure |
| CN110165537A (en) * | 2019-05-22 | 2019-08-23 | 中国计量大学 | A kind of tunable wave length passive mode-locking fiber laser based on loss control |
| CN110768094A (en) * | 2019-11-27 | 2020-02-07 | 中国计量大学 | Mode locking fiber laser based on tapered multimode fiber saturable absorber |
| CN112611478A (en) * | 2020-12-08 | 2021-04-06 | 中国人民解放军军事科学院国防科技创新研究院 | Absorber temperature characteristic transient measurement device based on metalized optical fiber sensing |
| CN113131318A (en) * | 2021-03-05 | 2021-07-16 | 长春理工大学 | Tunable mode-locked fiber laser based on spiral mechanism, preparation method and output method |
| CN113161864A (en) * | 2021-04-21 | 2021-07-23 | 中国计量大学 | Coherent multi-color noise soliton mode-locked fiber laser based on SMS structure |
| CN114122893A (en) * | 2021-10-29 | 2022-03-01 | 河北工业大学 | 1-micrometer mode-locked fiber laser based on YDF-GIMF (Yttrium-lead-in-fiber-guided multi-fiber) optical fiber structure |
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