CN107104351A - A kind of black phosphorus saturable absorber and the laser based on black phosphorus saturable absorber - Google Patents
A kind of black phosphorus saturable absorber and the laser based on black phosphorus saturable absorber Download PDFInfo
- Publication number
- CN107104351A CN107104351A CN201710368197.8A CN201710368197A CN107104351A CN 107104351 A CN107104351 A CN 107104351A CN 201710368197 A CN201710368197 A CN 201710368197A CN 107104351 A CN107104351 A CN 107104351A
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- Prior art keywords
- black phosphorus
- saturable absorber
- laser
- optical fiber
- fiber
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- 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
- H01S3/05—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
- H01S3/06712—Polarising fibre; Polariser
-
- 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
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a kind of black phosphorus saturable absorber and the laser based on black phosphorus saturable absorber, belong to fiber laser technology field.The laser includes pumping source, wavelength division multiplexer, doped fiber, Polarization Controller, optoisolator, photo-coupler, black phosphorus saturable absorber, constitutes annular cavity laser.Optical fiber is used for guided wave medium, first by optical fiber fused tapering, then the black phosphorus that mechanical stripping is obtained is laid in tapered fiber surface and prepares saturable absorber, coupled by way of optical fiber incides the light of black phosphorus saturable absorber with evanscent field with the black phosphorus on surface, improve action length, it is advantageously implemented larger modulation depth, it is easy to accomplish adjust Q, the output of mode locking pulse optical-fiber laser.
Description
Technical field
The invention belongs to fiber laser technology field, and in particular to a kind of black phosphorus saturable absorber and can based on black phosphorus
Tune Q, the mode-locked all-fiber laser of saturated absorbing body.
Background technology
Black phosphorus is used as the New Two Dimensional material of direct band gap, laminated structure (waveform stratiform of its structure similar to graphene
Structure), the band gap of monoatomic layer black phosphorus is 1.8eV, and the band gap of polyatom layer black phosphorus is 0.3eV, can be by changing black phosphorus
The number of plies adjusts its band gap, has filled up blank of other two-dimensional material energy gaps near infrared band, as energy between different materials
The connection bridge of gap, the energy gap of black phosphorus means that it can absorb 0.6 μm of light to 4.1 μ m wavelength ranges, due to its uniqueness
Bandgap structure makes it have excellent material property, is now widely used for grinding for photoelectronics, photonic propulsion and nonlinear optics
In studying carefully, it is adaptable to the laser from visible ray to middle-infrared band.The narrow gap characteristic of multilayer black phosphorus causes it to be especially suitable for doing
Saturable absorber (saturable absorber, SA), for CNT, it can realize more broadband inhale
Receive；For zero band gap of graphene and the big energy band band gap of transient metal sulfide, it has bigger RESONANCE ABSORPTION
(20%-30%).Therefore, potential alternative semiconductors saturated absorption mirror (the semiconductor saturable of black phosphorus
Absorber mirror, SESAM) turn into the ultra wide band saturable absorption in ultrashort pulse fiber laser and solid state laser
Material.
At present, saturable absorber, this skill are prepared using the method that black phosphorus nanometer sheet is coated in into optical patchcord head
Art formation saturable absorber stability is poor, insertion loss big, while short with the light interaction time, do not reach saturable and inhale
Acceptor saturation flux value leads to not startup locked mode and realizes 1 mu m all-fiber pulse laser.
The content of the invention
For the defect and deficiency of existing technology of preparing, object of the present invention is to provide a kind of black phosphorus saturable absorption
Body and the laser based on black phosphorus saturable absorber, solving can not be realized entirely using black phosphorus as saturable absorber at present
1 μm of optical fiber structure adjusts the problem of Q, mode locking pulse are exported.
To achieve these goals, the present invention, which is adopted the following technical scheme that, is achieved：
A kind of black phosphorus saturable absorber, including optical fiber and black phosphorus, described optical fiber is provided with cone area, described black phosphorus tiling
In the cone area of optical fiber.
Tune Q, mode-locked all-fiber laser based on black phosphorus saturable absorber, including laser diode pumping source, wavelength-division
Multiplexer, gain fibre, Polarization Controller, optoisolator and output coupler, described output coupler include 10% output
Port and 90% output port；Also include the black phosphorus saturable absorber described in claim 1, described wavelength division multiplexer, increase
Beneficial optical fiber, Polarization Controller, black phosphorus saturable absorber, optoisolator, the 90% output port difference head and the tail of output coupler
It is sequentially connected with, described laser diode pumping source is connected to the input of wavelength division multiplexer.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention uses optical fiber for guided wave medium, by optical fiber fused tapering, then the black phosphorus nanometer sheet that mechanical stripping is obtained
Tapered fiber cone area is laid in, black phosphorus can be completely compatible with optical fiber laser, it is ensured that passive Q-adjusted, mode locking pulse optical-fiber laser
The all optical fibre structure of device has extremely low insertion loss, while action length and the modulation depth of saturable absorber are improved,
Realize good beam quality, power output height, compact conformation, 1 μm of tune Q, mode locking pulse full optical fiber laser stable and reliable for performance
Device.
Brief description of the drawings
Fig. 1 is the structural representation of the laser of the present invention.
Fig. 2 is the schematic enlarged-scale view of the black phosphorus saturable absorber of the present invention, and (a) is that black phosphorus is laid in cone area, and (b) is black
Phosphorus nanometer sheet is laid in micro optical fiber area.
Fig. 3 black phosphorus saturated absorbing body saturated absorption feature measurement figures.
Fig. 4 is based on the output of black phosphorus saturable absorber Q impulse optical fiber laser pulse train.
Fig. 5 is the change curve of pulse width and repetition rate with pump power.
Fig. 6 is the output spectrum figure of the Q-switched laser of the present invention.
The implication of each label in figure：1- laser diode pumping sources, 2- wavelength division multiplexers, 3- gain fibres, 4- polarization controls
Device processed, 5- black phosphorus saturable absorbers, (5-1)-tapered fiber, (5-2)-black phosphorus, 6- optoisolators, 7- output couplers, 8-
Quartz substrate.
Explanation is further explained in detail to the particular content of the present invention with reference to embodiments.
Embodiment
Main idea is that：When preparing black phosphorus saturable absorber for existing method, black phosphorus is coated in light
The saturable absorber stability of fine end face formation is poor, insertion loss is big, while short with the light interaction time, the present invention is mainly
Area surface is bored by the way that black phosphorus is laid in into tapered fiber, optical fiber is incided the light of black phosphorus saturable absorber with the side of evanscent field
Formula is coupled with the black phosphorus on surface, realizes the tune Q based on black phosphorus saturable absorber, the output of mode locking pulse optical-fiber laser.
The black phosphorus saturable absorber of the present invention, including optical fiber 5-1 and black phosphorus 5-2, optical fiber is provided with cone area, described cone area
For the conical region formed after optical fiber fused tapering, as shown in figure 1, black phosphorus is laid in whole cone area, the size of black phosphorus ensures to cover
Cover the cone area of whole fiber.
The present invention black phosphorus saturable absorber prepare detailed process be：Black phosphorus is obtained using the method for mechanical stripping to receive
Rice piece, then black phosphorus nanometer sheet be transferred to dimethyl silicone polymer (PDMS) film surface.Black phosphorus nanometer sheet is distributed by two panels
PDMS films clamp the cone area of tapered fiber, form the sandwich structure of PDMS films-black phosphorus-optical fiber-black phosphorus-PDMS films, i.e.,
Obtain black phosphorus saturated absorbing body；
Tune Q, the mode-locked all-fiber laser based on black phosphorus saturable absorber of the present invention, including it is laser diode-pumped
Source 1, wavelength division multiplexer 2, gain fibre 3, Polarization Controller 4, black phosphorus saturable absorber 5, optoisolator 6 and output coupler
7, output coupler 7 includes 10% output port and 90% output port；Wherein, black phosphorus saturable absorber 5 is located on substrate,
Wavelength division multiplexer 2, gain fibre 3, Polarization Controller 4, the quartz substrate 8 for being equipped with black phosphorus saturable absorber 5, optoisolator
6th, 90% output port of output coupler 7 is sequentially connected with from beginning to end respectively, forms loop laser resonance cavity, as shown in Figure 1.Laser
Diode pumping source 1 is connected to the input of wavelength division multiplexer 2.
The light that the optical fiber of the present invention incides black phosphorus saturable absorber is transmitted in the way of evanscent field, light pulse edge part
Point transmitance is small, and loss is big, and then transmitance is big for peak value of pulse part, is lost small, and its loss can putting by operation material
It is compensated greatly, optoisolator 6 ensures laser in intracavitary one-way transmission, and 90% end of photo-coupler 7 is connected with wavelength division multiplexer 2
Ensure that laser continues cycling through vibration in annular chamber, after intracavitary is repeatedly circulated, the difference meeting of the energy of at peak value of pulse and edge
Increasing, the forward position of pulse is constantly cut suddenly, and peak fractions can effectively pass through, and pulse is narrowed, last output coupler 7
10% output end will adjust Q, Mode-locked laser output.
Specific embodiment of the invention given below is, it is necessary to which explanation is that the invention is not limited in specific examples below
In, all equivalents done on the basis of technical scheme each fall within protection scope of the present invention.
Comparative example
This comparative example provides a kind of laser based on black phosphorus saturable absorber, and black phosphorus nanometer sheet is coated in into optical fiber jumps
The end of a thread formation black phosphorus saturable absorber.The black phosphorus saturable absorber stability of formation is poor, insertion loss is big, at the same with light phase
Interaction time is short, does not reach saturable absorber saturation flux value, it is impossible to starts locked mode and adjusts Q.
Embodiment 1
The present embodiment provides a kind of black phosphorus saturable absorber, including optical fiber 5-1 and black phosphorus 5-2, and optical fiber is black provided with cone area
Phosphorus 5-2 is laid in the cone area of optical fiber.As shown in Figure 2.
The present embodiment is measured using P-Scan technologies to the non-linear absorption properties of black phosphorus saturated absorbing body, with
1064nm picosecond pulse lasers are adjusted to the pulse energy of light source by adjustable attenuator, obtained as testing light source
The transmittance curve of black phosphorus saturated absorbing body is as shown in figure 3, with the increase of incident optical power, the transmitance of material tends to saturation.
Measurement result is fitted with simplified saturated absorption model：T (I)=1- Δ T*exp (- I/Isat)-Tns；
Wherein, Δ T, IsatAnd TnsModulation depth, saturation power and unsaturation absorption coefficient are represented respectively, pass through fitting
The modulation depth for obtaining material is 3.8%.
Embodiment 2
The present embodiment provides a kind of tune Q, mode-locked all-fiber laser based on black phosphorus saturable absorber, including laser two
Pole pipe pumping source 1, wavelength division multiplexer 2, gain fibre 3, Polarization Controller 4, black phosphorus saturable absorber 5, optoisolator 6 and defeated
Go out coupler 7, output coupler 7 includes 10% output port and 90% output port；Wherein, black phosphorus saturable absorber 5 is set
In on substrate 8, described black phosphorus saturable absorber 5 is same as Example 1.
Wavelength division multiplexer 2, gain fibre 3, Polarization Controller 4, the substrate 8 for being equipped with black phosphorus saturable absorber 5, light every
90% output port from device 6, output coupler 7 is sequentially connected with from beginning to end respectively, forms loop laser resonance cavity, as shown in Figure 1.
Laser diode pumping source 1 is connected to the input of wavelength division multiplexer 2.
As shown in figure 4, during black phosphorus realizes that passive Q-adjusted optical fiber laser is operated as saturable absorber, Q impulse pumping
Threshold value is 38mW, depends primarily on black phosphorus saturable absorber and is transmitted using evanscent field mode with less insertion loss；When
Q impulse when pump power is 50mW is exported as shown in figure 3, it can be seen that the Q impulse of intracavitary is operated in one
Relatively steady state, the pulse spacing is 27.9 μ s, and corresponding pulse recurrence rate is 35.8kHz.
Fig. 5 understands that pump power not only influences the output pulse width of Q-switched laser, also influences pulse recurrence rate, pulse
Width is gradually reduced with the increase of pump power, on the contrary, modulating frequency gradually increases with the increase of pump power, works as pumping
When power starts increase, pulsewidth is reduced rapidly, continues to increase pumping, pulse width gradually tends to the μ s of minimum value 2, works as pump power
100mW is risen to from 38mW, corresponding pulse recurrence rate rises to 76kHz from 26kHz.
Fig. 6 show the output spectrum figure of the Q-switched laser of the present invention, it can be seen that the repetition of Q impulse sequence
Frequency is 35.8kHz, and the signal to noise ratio of frequency signal is more than 53dB, shows that the stability of laser is high.
Claims (2)
1. a kind of black phosphorus saturable absorber, it is characterised in that：Including optical fiber (5-1) and black phosphorus (5-2), described optical fiber is provided with
Area is bored, described black phosphorus (5-2) is laid in the cone area of optical fiber.
2. tune Q, mode-locked all-fiber laser based on black phosphorus saturable absorber, including laser diode pumping source (1), wavelength-division
Multiplexer (2), gain fibre (3), Polarization Controller (4), optoisolator (6) and output coupler (7), described output coupling
Device (7) includes 10% output port and 90% output port；
It is characterized in that：Also include the black phosphorus saturable absorber (5) described in claim 1, described wavelength division multiplexer (2),
Gain fibre (3), Polarization Controller (4), black phosphorus saturable absorber (5), optoisolator (6), the 90% of output coupler (7)
Output port is sequentially connected with from beginning to end respectively, and described laser diode pumping source (1) is connected to the input of wavelength division multiplexer (2)
End.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591676A (en) * | 2017-09-30 | 2018-01-16 | 天津理工大学 | A kind of passive mode-locking fiber laser |
| CN107809053A (en) * | 2017-10-19 | 2018-03-16 | 浙江大学 | The saturable absorber device and method based on TCO for fiber pulse laser |
| CN108036925A (en) * | 2017-12-27 | 2018-05-15 | 北京信息科技大学 | Research on Automatic Measuring System of Temperature based on thick cone fiber interference structure optical fiber laser |
| CN108169919A (en) * | 2018-01-18 | 2018-06-15 | 重庆邮电大学 | A kind of micro-structure mode-locking device and its production technology using conical fiber evanscent field |
| CN108199252A (en) * | 2018-01-24 | 2018-06-22 | 深圳大学 | Saturable absorber and preparation method thereof and ultrafast laser with active-passive lock mould |
| CN109326946A (en) * | 2018-12-07 | 2019-02-12 | 中国人民解放军国防科技大学 | Dark pulse excitation assembly and dark pulse fiber laser based on black phosphorus |
| CN109787078A (en) * | 2017-11-13 | 2019-05-21 | 天津理工大学 | A kind of passive Q-adjusted optical fiber laser based on siloxanes |
| WO2019144609A1 (en) * | 2018-01-24 | 2019-08-01 | 深圳大学 | Saturable absorber and preparation method therefor, and ultrafast passively mode-locked laser |
| CN110224286A (en) * | 2019-06-03 | 2019-09-10 | 西安电子科技大学 | One kind being based on Ta2NiS5Mixed mode-locking all -fiber mix ytterbium laser |
| WO2019184203A1 (en) * | 2018-03-30 | 2019-10-03 | 张晗 | Black phosphorus material-based all-optical phase modulator and application thereof |
| CN110350389A (en) * | 2019-07-10 | 2019-10-18 | 浙江大学 | A kind of saturable absorber and preparation method thereof based on planar optical waveguide |
| CN110556701A (en) * | 2018-06-03 | 2019-12-10 | 中国科学院大连化学物理研究所 | all-solid-state mid-infrared mode-locked laser based on two-dimensional material |
| CN111478164A (en) * | 2020-04-17 | 2020-07-31 | 西北大学 | Self-frequency-sweeping fiber laser based on bidirectional ring cavity |
| CN113540941A (en) * | 2020-04-16 | 2021-10-22 | 北京大学 | All-fiber mode-locked laser based on two-dimensional material fiber saturable absorber and preparation method |
| CN115117724A (en) * | 2022-07-26 | 2022-09-27 | 广东工业大学 | Saturable absorber palladium diselenide composite material, preparation method thereof and passive mode-locked laser |
| CN115650234A (en) * | 2022-11-15 | 2023-01-31 | 广东工业大学 | Preparation method of heterojunction saturable absorber and application of heterojunction saturable absorber in pulse fiber laser |
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Cited By (19)
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| CN107591676A (en) * | 2017-09-30 | 2018-01-16 | 天津理工大学 | A kind of passive mode-locking fiber laser |
| CN107809053A (en) * | 2017-10-19 | 2018-03-16 | 浙江大学 | The saturable absorber device and method based on TCO for fiber pulse laser |
| CN109787078A (en) * | 2017-11-13 | 2019-05-21 | 天津理工大学 | A kind of passive Q-adjusted optical fiber laser based on siloxanes |
| CN108036925A (en) * | 2017-12-27 | 2018-05-15 | 北京信息科技大学 | Research on Automatic Measuring System of Temperature based on thick cone fiber interference structure optical fiber laser |
| CN108169919A (en) * | 2018-01-18 | 2018-06-15 | 重庆邮电大学 | A kind of micro-structure mode-locking device and its production technology using conical fiber evanscent field |
| CN108169919B (en) * | 2018-01-18 | 2020-03-17 | 重庆邮电大学 | Microstructure mode locking device using conical optical fiber evanescent field and production process thereof |
| CN108199252A (en) * | 2018-01-24 | 2018-06-22 | 深圳大学 | Saturable absorber and preparation method thereof and ultrafast laser with active-passive lock mould |
| WO2019144609A1 (en) * | 2018-01-24 | 2019-08-01 | 深圳大学 | Saturable absorber and preparation method therefor, and ultrafast passively mode-locked laser |
| WO2019184203A1 (en) * | 2018-03-30 | 2019-10-03 | 张晗 | Black phosphorus material-based all-optical phase modulator and application thereof |
| CN110556701A (en) * | 2018-06-03 | 2019-12-10 | 中国科学院大连化学物理研究所 | all-solid-state mid-infrared mode-locked laser based on two-dimensional material |
| CN109326946B (en) * | 2018-12-07 | 2019-11-15 | 中国人民解放军国防科技大学 | Dark pulse excitation assembly and dark pulse fiber laser based on black phosphorus |
| CN109326946A (en) * | 2018-12-07 | 2019-02-12 | 中国人民解放军国防科技大学 | Dark pulse excitation assembly and dark pulse fiber laser based on black phosphorus |
| CN110224286A (en) * | 2019-06-03 | 2019-09-10 | 西安电子科技大学 | One kind being based on Ta2NiS5Mixed mode-locking all -fiber mix ytterbium laser |
| CN110350389A (en) * | 2019-07-10 | 2019-10-18 | 浙江大学 | A kind of saturable absorber and preparation method thereof based on planar optical waveguide |
| CN113540941A (en) * | 2020-04-16 | 2021-10-22 | 北京大学 | All-fiber mode-locked laser based on two-dimensional material fiber saturable absorber and preparation method |
| CN111478164A (en) * | 2020-04-17 | 2020-07-31 | 西北大学 | Self-frequency-sweeping fiber laser based on bidirectional ring cavity |
| CN115117724A (en) * | 2022-07-26 | 2022-09-27 | 广东工业大学 | Saturable absorber palladium diselenide composite material, preparation method thereof and passive mode-locked laser |
| CN115650234A (en) * | 2022-11-15 | 2023-01-31 | 广东工业大学 | Preparation method of heterojunction saturable absorber and application of heterojunction saturable absorber in pulse fiber laser |
| CN115650234B (en) * | 2022-11-15 | 2024-03-26 | 广东工业大学 | Preparation method of heterojunction saturable absorber and application of heterojunction saturable absorber in pulse fiber laser |
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