CN109361143A - The continuously adjustable passive Q regulation pulse optical fiber laser of pulsewidth based on two selenizing platinum - Google Patents
The continuously adjustable passive Q regulation pulse optical fiber laser of pulsewidth based on two selenizing platinum Download PDFInfo
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- CN109361143A CN109361143A CN201811501725.3A CN201811501725A CN109361143A CN 109361143 A CN109361143 A CN 109361143A CN 201811501725 A CN201811501725 A CN 201811501725A CN 109361143 A CN109361143 A CN 109361143A
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- optical fiber
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- light
- continuously adjustable
- platinum
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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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
-
- 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
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Lasers (AREA)
Abstract
The present invention relates to the pulse optical fibers that pulse width is continuously adjusted.It forms a full-optical-fiber laser by semiconductor laser and Active Optical Fiber, wavelength division multiplexer, Polarization Controller, fibre optic isolater and saturable absorber based on two selenizing platinum.Its innovation is using a kind of New Two Dimensional material as saturable absorber, pass through additional a branch of modulation light realize Q impulse pulsewidth and repetition rate it is continuously adjustable.Energy loss of the invention is small, compact-sized, easy to operate, stable working state.There is very strong application advantage in fiber optic communication, sensing, material processing.
Description
Technical field
The present invention relates to a kind of pulse optical fibers, more particularly to a kind of tune Q based on two selenizing platinum of two-dimensional material
Pulse optical fiber, as far as we know, this is two selenizing alloy platinum materials to be used in optical fiber laser to realize stable arteries and veins for the first time
Punching output, while the optical fiber laser that we construct is that pulse width is continuously adjustable.
Background technique
Optical fiber laser is with the incomparable high conversion efficiency of other traditional lasers, high-output power, bloom
Beam quality, high stability, broadband adjustability and easily miniaturization, without freezing, safeguarding the features such as simple.
Adjusting Q pulse laser source in fields such as wavelength-division multiplex system, photon microwave signal process, terahertz generation sources because having
Huge potential application causes the broad interest of domestic and international laser science man.Breadth of spectrum line and pulse width are to measure one
Two important parameters of laser quality.The present invention devises a kind of experimental provision, and it is continuous to can be achieved on pulse width
Adjustable pulsed optical fibre laser.
As a kind of novel two-dimensional material, two selenizing platinum have narrower forbidden bandwidth and higher carrier mobility speed
Rate, carrier mobility rate can want to compare two selenizing platinum since its band gap is adjustable with black phosphorus, it can be made to do near infrared light
Efficient reaction out.The band gap width of two selenizing platinum of single layer is 1.2eV, and the band gap width of the double-deck two selenizing platinum is reduced to
0.21eV, and three layers or more of two selenizing band gap are zero, and optical fiber laser generally operates in middle infrared band (1064-
2000nm), corresponding photon energy is 0.5-1eV, and therefore, the spatia zonularis of two selenizing platinum allows all light in optical fiber laser
Son is directly transitted to from valence band to conduction band, to generate stable saturable absorption and pulse.It is found by researches that two selenizing platinum exist
Room temperature condition stability inferior is fine, hence it is evident that is better than other two-dimensional materials.
Summary of the invention
The purpose of the present invention is to provide the tune Q arteries and veins that a kind of pulsewidth based on two selenizing platinum saturable absorbers is continuously adjusted
Wash fibre laser off.
The present invention is equipped with wavelength division multiplexer, gain fibre, optoisolator, output optical coupler, pumping source, Polarization Control
Device, the saturable absorber based on two selenizing platinum.
It is described to be by an annular chamber structure forming cavity based on the continuously adjustable Q impulse optical fiber laser of two selenizing platinum
The resonant cavity of 1550nm wavelength laser.The pump light of pumping source output infuses annular chamber by the pumping input terminal of wavelength division multiplexer,
The output end of photo-coupler is for the Q impulse that concussion generates in output cavity.
The Q-switch is used and is constructed by the way that two selenizing alloy platinum materials are attached on the evanscent field of micro-nano fiber.Two selenizings
Platinum is shifted by the way that PDMS is substrate, and passive Q-adjusted switch is collectively formed with magnesium fluoride crystal.
While the present invention utilizes the strong saturable absorption characteristic of two selenizing alloy platinum materials, two selenizing platinum are also used to two beams
The cross-absorpti on modulation characteristic of light makes Q impulse light realize the continuously adjustable output of pulsewidth, frequency.
The step of production method of Q impulse optical fiber laser based on two selenizing platinum includes the following:
1) the monofilm optical fiber that diameter is about 125 μm is carried out first drawing cone processing, cone diameter is drawn to be made as about 6 μm；
2) micro-nano fiber of cone processing will be drawn to be laid on the flat plate substrate of magnesium fluoride crystal, is fixed with glue；
3) it is shifted by two selenizing platinum of the substrate to CVD growth of PDMS, two selenizing platinum of single layer is fitted in micro-nano light
At fine drawing cone；
4) reference path figure welds each optical element.
Compared with prior art, the present invention having the advantage that as follows: the present invention can using two the strong of selenizing alloy platinum material
Saturated absorption realizes adjustable Q laser pulse output.In the present invention, we have manufactured one and can have been satisfied by same two selenizings platinum
The passive Q regulation pulse optical fiber laser that the pulsewidth to work in 1550nm is continuously adjusted is realized with absorber.It is ground in synchronizing process
The formation of pulse is studied carefully and in two selenizing platinum saturable absorption characteristics, has had studied 980nm modulation light and spy is exported to 1550nm pulse
The influence of property.Result of study is it can be shown that two selenizing platinum can control the pulsed laser output of 1550nm, the high-intensitive short arteries and veins of realization
Punching output.
Detailed description of the invention
Fig. 1 is the light path schematic diagram of the present invention two selenizing platinum cross-absorpti on modulation characteristics of measurement.
Fig. 2 is variation relation figure of the two selenizing platinum saturable absorption characteristics with modulation optical power.
The structural schematic diagram of the pulse optical fiber of adjustable pulse width of the Fig. 3 based on two selenizing platinum saturable absorbers.
Fig. 4 is to keep pump power constant, is gradually increased 980nm modulation optical power, the repetition of 1550nm laser pulse
The variation diagram of frequency and pulse width.
Specific embodiment
As shown in Figure 1, the optical path that two selenizing platinum cross-absorpti on modulation characteristics are measured in the present invention is first built, including 1,
It is 980nm pumping source 2,1550nm light-pulse generator 3,980nm/1550nm wavelength division multiplexer 4, two selenizing platinum saturable absorbers 5, attached
There are the PDMS 6, two selenizing platinum samples 7, magnesium fluoride 8, the micro-nano fiber 9,980nm/ for supporting tapered fiber of two selenizing platinum samples
1550nm wavelength division multiplexer.The cross-absorpti on modulation characteristics exhibit for the two selenizing platinum surveyed by Fig. 1 device is in Fig. 2, it can be seen that
With the increase of modulation optical power, the percent of pass of 1550nm pulsed light is being gradually increased, and corresponding modulation depth is being gradually reduced,
Illustrate that two selenizing platinum have cross-absorpti on modulation characteristic.Based on the cross-absorpti on modulation characteristic of two selenizing platinum, as shown in figure 3, taking
Build based on two selenizing platinum Q impulse optical fiber lasers comprising 1,980nm pumping source 2,980nm/1550nm wavelength division multiplexer 3,
1: 9 coupling follower 5,1550nm isolator 6, Polarization Controller 7,980nm pumping source of high-gain Er-doped fiber 4,1550nm.
8,980nm/1550nm wavelength division multiplexer 9, two selenizing platinum saturable absorbers 10,980nm/1550nm wavelength division multiplexer.It will be attached
There is the PDMS of two selenizing platinum samples to be attached to about 6 μm of diameter of optical fiber side, and supported with magnesium fluoride, ring-type is er-doped pulse fiber
Laser, 1550nm pulsed light are added a 1550nm's in 1550nm loop by the coupler 4 of an output 10%
Isolator 10 (ISO) makes laser one way propagation, after Polarization Controller 5, with wavelength division multiplexer 6 make the light of 980nm with
The pulsed light of 1550nm converges, after two selenizing platinum of saturable absorber, then with a wavelength division multiplexer the light guide of 980nm
Out.
The step of production method of Q impulse optical fiber laser based on two selenizing platinum, is as follows:
1) the monofilm optical fiber that diameter is about 125 μm is carried out first drawing cone processing, cone diameter is drawn to be made as about 8 μm；
2) micro-nano fiber of cone processing will be drawn to be laid on the flat plate substrate of magnesium fluoride crystal, is fixed with glue；
3) it is shifted by two selenizing platinum of the substrate to CVD growth of PDMS, two selenizing platinum of single layer is fitted in micro-nano light
At fine drawing cone；
4) reference path figure welds each optical element.
The principle of the present invention is as follows:
Optical path is connected referring to light path schematic diagram as shown in Figure 3.When the pump light that 980nm semiconductor laser issues passes through
When one 980/1550WDM is entered in annular chamber, 980nm understands the erbium ion in excitation fiber, generates centered on 1550nm
The spontaneous radiation of wavelength, 1550nm laser is after output coupler, polarization are without optoisolator, Polarization Controller again through 1550/
980WDM is combined again together with 980nm modulation light, common to enter the saturable absorber based on two selenizing platinum.In two selenium
Change in platinum saturable absorber, spontaneous emission light generates two selenizing platinum phases of evanescent wave and optical taper area surface by tapered fiber
Interaction forms multiple light pulses under the action of two selenizing platinum saturable absorption characteristics.Simultaneously as 1550nm and 980nm
Light can excite the electronics in two selenizing platinum jointly, and lead to stronger saturable absorption effect.Therefore, 1550nm is spontaneous
When radiant light is strongest, light pulse will obtain highest transmissivity in the effect with graphene, thus can be by outer
The continuous light of a branch of 980nm is added to realize that the pulsewidth of 1550nm pulsed light is continuously adjustable as modulation light.Therefore, it is proposed in this patent
In structure, the light pulse of 1550nm will realize the generation of pulse due to the saturable absorption effect of graphene, and in 980nm tune
The cross-absorpti on modulation characteristic of two selenizing platinum is utilized under the action of light processed, the final pulsewidth for realizing Q impulse light is continuously adjustable.
Fig. 4 gives laser when pump power is 310 milliwatt, and the pulsewidth and repetition rate for exporting pulse are with modulation light
The variation relation of power.It can be seen that with the increase of modulation optical power, the pulsewidth of Q impulse can increase to from 2.0 μ s
4.9 μ s, corresponding repetition rate also increase to 68.6kHz from 39.7kHz, illustrate that pulse width and again may be implemented in the device
Complex frequency is continuously adjusted, and has biggish working range, will be had broad application prospects.
Claims (5)
1. a kind of continuously adjustable passive Q regulation pulse optical fiber laser of pulse width based on two selenizing platinum saturable absorbers,
By semiconductor laser and Active Optical Fiber, wavelength division multiplexer, Polarization Controller, optical isolator and satisfying based on two selenizing platinum
The pulse optical fiber being continuously adjusted with the pulse width that absorber is constituted.It is characterized in that the pulsewidth of 1550nm pulsed light and
Repetition rate can be regulated and controled by the modulation light of a branch of additional 980nm, and then realize that pulsewidth is continuously adjustable.1550nm annular chamber
It is made of 1: 9 coupling follower, 1550nm isolator, the Polarization Controller of high one meter of Er-doped fiber, 1550nm, additional modulation light
It is exported by a 980nm pumping source.Converge the light of 980nm and the pulsed light of 1550nm with wavelength division multiplexer, through can two selenizings
After platinum saturated absorbing body, then with a wavelength division multiplexer the light-output of 980nm, and then realize the light of 980nm to 1550nm arteries and veins
The regulation washed off realizes the pulsewidth of 1550nm pulsed light and repetition rate continuously adjustable.
2. the continuously adjustable passive Q regulation pulse optical fiber laser of pulse width according to claim 1, it is characterised in that institute
The saturable absorption that the two selenizing platinum saturable absorbers stated are two selenizing platinum, micro-nano fiber and magnesium fluoride crystal collectively form
Body.
3. the continuously adjustable passive Q regulation pulse optical fiber laser of pulse width according to claim 1, it is characterised in that institute
The pumping source stated is semiconductor pumping sources.
4. the continuously adjustable passive Q regulation pulse optical fiber laser of pulse width according to claim 1, it is characterised in that institute
The 1550nm laser and 980nm laser that the 1550nm annular chamber stated is formed pass through 980nm/1550nm wavelength division multiplexer symport
It is interacted jointly with saturable absorber.
5. the continuously adjustable passive Q regulation pulse optical fiber laser of pulse width according to claim 1, it is characterised in that institute
By 980nm/1550nm wavelength division multiplexer after 1550nm laser and 980nm laser and the saturable absorber interaction stated
It is separated from each other, it is ensured that do not influence transmission of the 1550nm pulsed light in annular chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811501725.3A CN109361143A (en) | 2018-12-10 | 2018-12-10 | The continuously adjustable passive Q regulation pulse optical fiber laser of pulsewidth based on two selenizing platinum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811501725.3A CN109361143A (en) | 2018-12-10 | 2018-12-10 | The continuously adjustable passive Q regulation pulse optical fiber laser of pulsewidth based on two selenizing platinum |
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| Publication Number | Publication Date |
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| CN109361143A true CN109361143A (en) | 2019-02-19 |
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| CN201811501725.3A Withdrawn CN109361143A (en) | 2018-12-10 | 2018-12-10 | The continuously adjustable passive Q regulation pulse optical fiber laser of pulsewidth based on two selenizing platinum |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653930A (en) * | 2020-04-26 | 2020-09-11 | 深圳瀚光科技有限公司 | Saturable absorber based on boron-alkene two-dimensional material, preparation method thereof and mode-locked pulse laser |
| CN111697421A (en) * | 2020-05-27 | 2020-09-22 | 陕西师范大学 | Pulse fiber laser and system of saturable absorber |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203871646U (en) * | 2014-01-23 | 2014-10-08 | 中国电子科技集团公司第十一研究所 | Pulse width tunable passive mode locking laser |
-
2018
- 2018-12-10 CN CN201811501725.3A patent/CN109361143A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203871646U (en) * | 2014-01-23 | 2014-10-08 | 中国电子科技集团公司第十一研究所 | Pulse width tunable passive mode locking laser |
Non-Patent Citations (2)
| Title |
|---|
| KANG ZHANG ET AL.: "Pulse Width Tunable Passively Q-Switched Fiber Laser with PtSe2 Saturable Absorber", 《ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE AND EXHIBITION》 * |
| KANG ZHANG ET AL.: "Q-switched and mode-locked Er-doped fiber laser using PtSe2 as a saturable absorber", 《PHOTONICS RESEARCH》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111653930A (en) * | 2020-04-26 | 2020-09-11 | 深圳瀚光科技有限公司 | Saturable absorber based on boron-alkene two-dimensional material, preparation method thereof and mode-locked pulse laser |
| CN111697421A (en) * | 2020-05-27 | 2020-09-22 | 陕西师范大学 | Pulse fiber laser and system of saturable absorber |
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Application publication date: 20190219 |
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