CN110061408A - It mixes the preparation of chromium selenizing zinc nanoparticles saturable absorber and its constitutes full optical fiber Q-switched laser - Google Patents
It mixes the preparation of chromium selenizing zinc nanoparticles saturable absorber and its constitutes full optical fiber Q-switched laser Download PDFInfo
- Publication number
- CN110061408A CN110061408A CN201910481206.3A CN201910481206A CN110061408A CN 110061408 A CN110061408 A CN 110061408A CN 201910481206 A CN201910481206 A CN 201910481206A CN 110061408 A CN110061408 A CN 110061408A
- Authority
- CN
- China
- Prior art keywords
- chromium
- saturable absorber
- laser
- selenizing
- zinc nanoparticles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H01S3/1106—Mode locking
- H01S3/1112—Passive mode locking
- H01S3/1115—Passive mode locking using intracavity saturable absorbers
-
- 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
Abstract
The present invention relates to a kind of preparation for mixing chromium selenizing zinc nanoparticles saturable absorber and its constitute all -fiber tuneQLaser belongs to Fiber laser technology field.Mixing chromium zinc selenide has wide absorption band and biggish absorption cross-section in 1.5 ~ 2.1 mu m wavebands, and damage threshold with higher can be used as a kind of outstanding saturable absorber.Femtosecond laser ablation method preparation is mixed in chromium selenizing zinc nanoparticles incorporation polyvinyl alcohol or polymethyl methacrylate, film saturable absorber can be made.The present invention also provides the annular intonations using the saturable absorberQLaser, comprising: wavelength division multiplexer, gain fibre, optoisolator, Polarization Controller, saturable absorption device and fiber coupler.It is this to be based on nanometer particle film saturable absorber, have many advantages, such as preparation process it is simple, it is at low cost, be easily integrated, meanwhile, constructed all optical fibre structure laser has compact-sized, steady performance, suitable for practical application.
Description
Technical field
The invention belongs to Fiber laser technology fields, and in particular to one kind mixes chromium selenizing zinc nanoparticles saturable absorber
Preparation and its constitute all -fiber tuneQLaser.
Background technique
Optical fiber tuneQLaser has good beam quality, and peak power is high, the features such as being easily integrated, adds in optical communication, laser
There is very extremely important effect in the fields such as work, biologic medical, Fibre Optical Sensor and laser radar.Saturable is inserted into laser cavity
Absorber is passively adjustedQIt is a kind of technology being in daily use, utilizes the saturable absorption characteristic of material, when light intensity is lesser, material
The transmission very little of material, cavity loss is very big, cannot form lasing, and after light intensity increases to saturation light intensity, material transmission is very big,
Cavity loss reduces, it is established that pulse.It is adjusted relative to activeQIt is passive to adjust for technologyQWith simple and compact for structure, and it is not required to
Introduce the advantage of external electric control element.There are many materials can be used as saturable absorber use at present, such as partly leads
Body saturable absorbing mirror (SESAMs), single-walled carbon nanotube (SWCNTs) and graphene.SESAMs common satisfies as a kind of
And absorber, since its Absorber Bandwidth is relatively narrow, complex manufacturing technology, at high cost.SWCNTs has low cost and is easily integrated
Advantage, but need complicated operation to realize that it works at a particular wavelength.Graphene saturable absorber, which has, to be absorbed
With the advantage that wide, nonlinear effect are strong and recovery time is ultrafast, but absorption coefficient is small and zero band gap characteristic etc. limits it
Application in the opto-electronic device.Therefore, all the time, researcher is in constantly development of new high-performance saturable absorber
To meet different application demands.
Zinc selenide is a kind of direct band gap material, and structure is the zincblende lattce structure of four-coordination, in very wide spectral region
There is very high transmitance.Incorporation is with after chromium ion similar in zinc ion radius in zinc selenide matrix, and the energy level of chromium ion is in base
The lower division of matter crystal field effect, since there are very strong Electron-phonon coupling effects, so that mixing chromium selenizing Zinc material in middle infrared waves
Section has wide absorption and transmitted bandwidth.This allows for the material as saturable absorber, has very wide bandwidth of operation, fits
Passive modulation for a variety of band lasers.In addition, mixing chromium zinc selenide damage threshold with higher, swash suitable for high power
Photosystem.
It mixes chromium zinc selenide bulk crystal and has been demonstrated that can be used as saturable absorption device uses in the laser, but it is not
Suitable for constructing the full-optical-fiber laser of passive modulation.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of based on the saturable absorption for mixing chromium selenizing zinc nanoparticles
Body, and all -fiber tune based on this saturable absorberQLaser.
Saturable absorber provided by the invention is the Cr to be formed a film by polyvinyl alcohol (PVA)2+: ZnSe nano saturable
Absorber.The film has saturable absorption characteristic, i.e., transmitance is small when pump power is low, reaches in energy density
When to some very high value, film " will be saturated " or " transparent ", and incident light almost all penetrates, and intracavitary luminous flux can be anxious
Increase severely big, it is established that pulse.
The preparation method of saturable absorber provided by the invention, includes the following steps.
(1) preparation of chromium selenizing zinc nanoparticles is mixed.
(2) preparation of chromium selenizing zinc nanoparticles-PVA film is mixed.
In the above-mentioned preparation method for mixing chromium selenizing zinc nanoparticles saturable absorber, the purpose of step (1) is to incite somebody to action
The biggish block of volume is prepared as the particle of Nano grade, to realize full optical fiber laser system, it is easier to integrated.It can be using winged
Second laser ablation obtains Cr2+: ZnSe nano.Use mechanical milling method by Cr first2+: ZnSe crystal is ground into powder and micron
End is nearly all greater than 500 nm, and in irregular shape；Micron powder is placed in quartzy bottle, deionized water is put into；It is small by 2
When argon gas eliminate the oxygen that is dissolved in suspension；From central wavelength be 808 nm, frequency is 1 kHz, pulsewidth is 60 fs
Ultrashort laser pulse laser laser by focal length be 10 cm cylindrical lens focus in the suspension of quartzy bottle, act on
About 8 hours, while continuing agitating solution using magnetic stirring apparatus, ablation obtains nano particle；Suspend receiving in deionized water
Rice grain uses deionized water and ethanol washing for several times, and centrifugation collects precipitating, is dried to obtain and mixes chromium selenizing zinc nanoparticles.
In the preparation method of above-mentioned saturable absorber, the purpose of step (2) is to make nano particle together with PVA
At film, it is easier to integrated with optical fiber.By step (1) obtain to mix chromium selenizing zinc nanoparticles fully dispersed in ethanol, so
PVA solution is added in mixed liquor afterwards, uses ultrasound 1 hour.Then, take a small amount of mixing liquid, drop coating in planar substrates on piece,
It places at room temperature and obtains film.
For realization all -fiber tuneQLaser this purpose, the present invention demonstrate one kind by mixing chromium selenizing zinc nanoparticles
The all -fiber tune that saturable absorber is constitutedQLaser, using ring cavity structure, including diode-end-pumped source, wavelength-division
Multiplexer, optoisolator, mixes chromium selenizing zinc nanoparticles saturable absorber, Polarization Controller, fiber coupling at gain fibre
Device.The light in diode-end-pumped source is injected into gain fibre through wavelength division multiplexer by one end；The gain fibre other end
It is sequentially connected optoisolator；The optoisolator other end connects optical patchcord, and above-mentioned chromium selenizing zinc nanoparticles-PVA film of mixing is put
It sets on the end face of optical patchcord, then two optical patchcords is connected with ring flange；The optical patchcord other end is sequentially connected partially
Shake controller and fiber coupler, and one end is exported as laser, and one end connects wavelength division multiplexer and constitutes annular chamber.
Compared with prior art, the beneficial effects of the invention are as follows.
(1) mixing chromium zinc selenide has very wide transmitting and Absorber Bandwidth at 1.5~2.1 μm of middle infrared band, with doping
The optical fiber such as erbium, thulium is are easy to generate pulse output in the laser of gain media, and its damage threshold with higher can be used
In superpower laser.
(2) compared with block mixes chromium zinc selenide, the present invention relates to saturable absorber be reduced in size, it is only necessary to will
The end face that chromium selenizing zinc nanoparticles-PVA film is placed into fiber connector is mixed, it is easy to operate, it is compact to provide a kind of realization
The scheme of type full-optical-fiber laser.
Detailed description of the invention
Fig. 1 is that all -fiber of the present invention is passively adjustedQThe structure chart of laser.
In figure: 1- diode-end-pumped source, 2- wavelength division multiplexer, 3- gain fibre, 4- polarization independent optical isolator,
5- mixes chromium selenizing zinc nanoparticles-PVA film saturable absorber, 6- Polarization Controller, 7- fiber coupler.
Fig. 2 is to be based on mixing chromium selenizing zinc nanoparticles saturable absorber all -fiber tuneQThe pulse train of laser exports.
Fig. 3 is that all -fiber of the invention is passively adjustedQThe spectrogram of laser.
Specific embodiment
The embodiment of the present invention is described further below in conjunction with attached drawing.
The embodiment of the present invention demonstrates a kind of all -fiber and passively adjustsQLaser, device is as shown in Figure 1, semiconductor laser
Pumping source 1, gain fibre 3, the unrelated isolator 4 of polarization, mixes chromium selenizing zinc nanoparticles-PVA film and can satisfy wavelength division multiplexer 2
Loop laser resonance cavity is constituted with absorber 5, Polarization Controller 6, fiber coupler 7.Wherein, 1 central wavelength of pumping source is 980
The single mode semiconductor laser of nm.Wavelength division multiplexer 2 uses 980/1550 nm wavelength-division range.Gain fibre 3 uses er-doped light
Fibre is absorbed as 80 dB/m in 1530 nm, and the length is 30 cm.Polarizing unrelated isolator 4 is to guarantee that laser is operating
One-way transmission in the process.The nano particle mixed in chromium selenizing zinc nanoparticles-PVA film saturable absorber 5 is by femtosecond
What ablation obtained, it is fully dispersed in ethanol, PVA solution is then added in mixed liquor, using ultrasound 1 hour, uses capillary
Drop takes mixed liquor on glass slide, places obtain film at room temperature, and the film of the suitable size of clip is placed on fiber connector
On end face, two fiber connectors are fixed with ring flange.Polarization Controller 6 be for the polarization state in adjusting cavity so that
Laser output is optimal.Fiber coupler 7 uses the ratio of 80%:20%, wherein 20% exports for laser, 80% laser return cavity
Inside remain in operation.
It is illustrated in figure 2 tuneQPulse sequence diagram, it is as can be seen from the figure intracavitary to have built up stable tuneQPulse
Output.
Fig. 3 show all -fiber of the invention and passively adjustsQThe spectrogram of laser, therefrom in available output laser
A length of 1563.7 nm of cardiac wave, full width at half maximum are 0.3 nm.
Claims (6)
1. one kind mixes chromium selenizing zinc nanoparticles saturable absorber, which is characterized in that the saturable absorber is by mixing chromium
Selenizing zinc nanoparticles and host material form.
2. mixing chromium selenizing zinc nanoparticles saturable absorber as described in claim 1, which is characterized in that mix chromium zinc selenide
The diameter range of nano particle is the nm of 10 nm ~ 500.
3. mixing chromium selenizing zinc nanoparticles saturable absorber as described in claim 1, which is characterized in that host material can
To be any one in polyvinyl alcohol or polymethyl methacrylate.
4. a kind of preparation method for mixing chromium selenizing zinc nanoparticles saturable absorber, which comprises the following steps:
(1) block is mixed into chromium zinc selenide first and is ground into a micron powder, reused femtosecond laser ablation and obtain nano particle；
(2) by above-mentioned chromium zinc selenide nano-dispersed of mixing into ethanol solution；
(3) step (2) mix in chromium zinc selenide nanoparticles solution be added mass fraction be 10%-30% polyvinyl alcohol it is molten
Liquid, ultrasound are uniformly mixed it；
(4) the obtained mixing drop-coated of step (3) is made on planar substrates and mixes chromium selenizing zinc nanoparticles saturable absorption
Body.
5. based on all -fiber tune for mixing chromium selenizing zinc nanoparticlesQLaser, it is characterised in that: including the wavelength division multiplexer
(2), gain fibre (3), polarization independent optical isolator (4) mix chromium selenizing zinc nanoparticles-PVA according to claim 4
Film saturable absorber (5), Polarization Controller (6), fiber coupler (7) are successively sequentially connected with from beginning to end, the semiconductor
Laser pump source (1) connects the input terminal of wavelength division multiplexer (2).
6. as claimed in claim 5 based on all -fiber tune for mixing chromium selenizing zinc nanoparticlesQLaser, which is characterized in that institute
The gain fibre stated is erbium-doped fiber or thulium doped fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910481206.3A CN110061408A (en) | 2019-06-04 | 2019-06-04 | It mixes the preparation of chromium selenizing zinc nanoparticles saturable absorber and its constitutes full optical fiber Q-switched laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910481206.3A CN110061408A (en) | 2019-06-04 | 2019-06-04 | It mixes the preparation of chromium selenizing zinc nanoparticles saturable absorber and its constitutes full optical fiber Q-switched laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110061408A true CN110061408A (en) | 2019-07-26 |
Family
ID=67325548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910481206.3A Pending CN110061408A (en) | 2019-06-04 | 2019-06-04 | It mixes the preparation of chromium selenizing zinc nanoparticles saturable absorber and its constitutes full optical fiber Q-switched laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110061408A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927125A (en) * | 2020-02-20 | 2020-03-27 | 四川大学 | Method for setting damage threshold of femtosecond high-power laser to transparent material |
| CN113193470A (en) * | 2021-04-29 | 2021-07-30 | 吉林工程技术师范学院 | Preparation method of saturable absorber and fiber laser |
| CN113437632A (en) * | 2021-05-10 | 2021-09-24 | 深圳技术大学 | Carbon nanotube saturable absorber and laser device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006324613A (en) * | 2005-05-17 | 2006-11-30 | Alnair Labs:Kk | Passive mode-locking short pulsed light fiber laser and scanning pulsed laser |
| CN104836108A (en) * | 2015-05-15 | 2015-08-12 | 华南师范大学 | Broadband saturable absorber, preparation method thereof and laser pulse based on device |
| 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 |
-
2019
- 2019-06-04 CN CN201910481206.3A patent/CN110061408A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006324613A (en) * | 2005-05-17 | 2006-11-30 | Alnair Labs:Kk | Passive mode-locking short pulsed light fiber laser and scanning pulsed laser |
| CN104836108A (en) * | 2015-05-15 | 2015-08-12 | 华南师范大学 | Broadband saturable absorber, preparation method thereof and laser pulse based on device |
| 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 |
Non-Patent Citations (3)
| Title |
|---|
| F.Z. QAMAR, T.A. KING: "Passive Q-switching of the Tm-silica fibre laser near 2 lm by a Cr2+:ZnSe saturable absorber crystal", 《OPTICS COMMUNICATIONS》 * |
| HUSEYIN CANKAYA ET AL.: "Absorption saturation analysis of Cr2+:ZnSe and Fe2+:ZnSe", 《 OPTICAL SOCIETY OF AMERICA》 * |
| SHOUGUI NING ET AL.: "Fabrication of Fe2+: ZnSe nanocrystals and application for a passively Q-switched fiber laser", 《OPTICAL MATERIALS EXPRESS》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927125A (en) * | 2020-02-20 | 2020-03-27 | 四川大学 | Method for setting damage threshold of femtosecond high-power laser to transparent material |
| CN113193470A (en) * | 2021-04-29 | 2021-07-30 | 吉林工程技术师范学院 | Preparation method of saturable absorber and fiber laser |
| CN113193470B (en) * | 2021-04-29 | 2022-10-18 | 吉林工程技术师范学院 | Preparation method of saturable absorber and fiber laser |
| CN113437632A (en) * | 2021-05-10 | 2021-09-24 | 深圳技术大学 | Carbon nanotube saturable absorber and laser device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110061408A (en) | It mixes the preparation of chromium selenizing zinc nanoparticles saturable absorber and its constitutes full optical fiber Q-switched laser | |
| CN208093940U (en) | A kind of big energy optical fiber amplifier of the high power that repetition is tunable | |
| CN108767637A (en) | THz high repetition frequency high power femto second optical fiber lasers based on dispersive wave | |
| CN104852260A (en) | Dual-wavelength Q-switched pulse fiber laser | |
| CN104134927A (en) | Nonlinear effect Q-switched fiber laser | |
| CN109825021B (en) | Polymer film containing tellurium alkene, and preparation method and application thereof | |
| CN106785844A (en) | A kind of two-dimension nano materials mode-locked all-fiber laser of use mirror structure | |
| CN111404005A (en) | All-fiber mode-locked fiber laser | |
| CN110808528A (en) | All-fiber column vector pulse laser | |
| CN106877121A (en) | Pulse width tuning laser based on light-operated Graphene Chirp Bragg grating | |
| CN102244351B (en) | Manufacturing method of passive mode-locking device based on SCNTs (singlewalled carbon nano tubes) | |
| CN113314929B (en) | Saturable absorber with saturable absorption and reverse saturable absorption characteristics and application thereof | |
| He et al. | Passively Q-switched cylindrical vector laser based on a black phosphorus saturable absorber | |
| CN203103749U (en) | Two-micron wave length all-fiber laser based on nanotube mode locking | |
| CN113594842A (en) | Device and method for generating ultrashort pulse of erbium-doped laser | |
| CN111463651A (en) | Tuning method for working wavelength of ultrashort pulse fiber laser | |
| CN108628058B (en) | On-chip integrated mid-infrared super-continuum spectrum light source | |
| CN115632297A (en) | C-waveband passive Q-switched pulse fiber laser and preparation method of saturable absorber based on CsPbBr3 perovskite nanocrystalline | |
| CN102394466B (en) | All-fiber thulium-mixed laser with tunable wide brand | |
| CN202957448U (en) | Middle and far-infrared super-continuum spectrum fiber laser | |
| CN111193174B (en) | Saturable absorber based on bismuth telluride heterojunction and preparation method and application thereof | |
| CN105490139A (en) | High-power all-fiber near and middle infrared super-continuum spectrum laser light source | |
| CN109273973A (en) | A kind of dissipative solitons laser of 2 micron waveband | |
| Li et al. | Multiwavelength Q-switched pulse operation with gold nanoparticles as saturable absorber | |
| CN114597747A (en) | Passive Q-switched fiber laser based on indium tin oxide saturable absorber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190726 |