CN110255882A - 1.7 μm of optical fiber lasers of one kind are co-doped with silica fibre and preparation method thereof with Tm/Tb - Google Patents
1.7 μm of optical fiber lasers of one kind are co-doped with silica fibre and preparation method thereof with Tm/Tb Download PDFInfo
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- CN110255882A CN110255882A CN201910554495.5A CN201910554495A CN110255882A CN 110255882 A CN110255882 A CN 110255882A CN 201910554495 A CN201910554495 A CN 201910554495A CN 110255882 A CN110255882 A CN 110255882A
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000013307 optical fiber Substances 0.000 title claims abstract description 47
- 239000000835 fiber Substances 0.000 title claims abstract description 25
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000010410 layer Substances 0.000 claims abstract description 47
- 238000005253 cladding Methods 0.000 claims abstract description 34
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims abstract description 34
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 21
- 229910006113 GeCl4 Inorganic materials 0.000 claims abstract description 17
- 229910019213 POCl3 Inorganic materials 0.000 claims abstract description 17
- 229910003910 SiCl4 Inorganic materials 0.000 claims abstract description 17
- 229910004014 SiF4 Inorganic materials 0.000 claims abstract description 17
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 claims abstract description 17
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 claims abstract description 17
- IEXRMSFAVATTJX-UHFFFAOYSA-N tetrachlorogermane Chemical compound Cl[Ge](Cl)(Cl)Cl IEXRMSFAVATTJX-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000004615 ingredient Substances 0.000 claims abstract description 15
- 239000012792 core layer Substances 0.000 claims abstract description 13
- 239000013522 chelant Substances 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 238000009472 formulation Methods 0.000 claims abstract description 8
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 6
- 239000002243 precursor Substances 0.000 claims abstract description 6
- 238000000151 deposition Methods 0.000 claims description 14
- 238000005245 sintering Methods 0.000 claims description 10
- 239000003708 ampul Substances 0.000 claims description 9
- 230000008021 deposition Effects 0.000 claims description 9
- 239000010453 quartz Substances 0.000 claims description 9
- 239000011229 interlayer Substances 0.000 claims description 2
- 238000012946 outsourcing Methods 0.000 claims description 2
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 3
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000002189 fluorescence spectrum Methods 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000005491 wire drawing Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- -1 rare earth ion Chemical class 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 241000040710 Chela Species 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
-
- 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
- H01S3/05—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
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06733—Fibre having more than one cladding
Landscapes
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Glass Compositions (AREA)
- Lasers (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The present invention provides a kind of 1.7 μm of optical fiber lasers and is co-doped with silica fibre and preparation method thereof with Tm/Tb, the optical fiber have the characteristics that it is rare earth ion doped it is uniform, fluorescence centre wavelength is suitable, signal gain is high.The optical fiber is made of sandwich layer, inner cladding and surrounding layer, is prepared using chemical vapour deposition technique (MCVD) and in conjunction with chelate precursor doping techniques (CPDT), wherein core layer formulation component are as follows: Tm (thd)3: 0.5~2%, SiCl4: 30~50%, GeCl4: 5~20%, SiF4: 10~20%, POCl3: 10~20%, AlCl3: 5~10%, inner cladding recipe ingredient are as follows: Tb (thd)3: 0.5~2%, SiCl4: 30~50%, GeCl4: 5~20%, SiF4: 10~20%, POCl3: 10~20%, AlCl3: 5~10%.
Description
Technical field
The invention belongs to technical field of optical fiber, are related to 1.7 μm of optical fiber laser silica fibres of one kind and preparation method thereof.
Background technique
1.7 mu m wavebands are exactly between two strong absorption bands (1400~1600nm and 1900~2200nm) of water
Wave trough position, therefore hydrone is to the absorption very little of the wave band.In addition to this, 1.7 mu m wavebands are just at polymer molecule
The strongest absorption bands of middle c h bond.These exclusive characteristics of 1.7 mu m wavebands make the wave band ultrafast laser in optics phase
Dry tomography (OCT), laser medicine, femtosecond photon micro-imaging, laser processing, femtosecond optical frequency comb, multi-photon are micro- (MPM)
There is fabulous application prospect in equal fields.
Currently, thulium-doped silica fib is main gain matrix in 1.7 mu m waveband optical fiber lasers.But since the optical fiber is deposited
In shortcomings, 1.7 μm of optical-fiber lasers operation based on thulium-doped silica fib such as fluorescence centre wavelength is too long, signal gain is small
Easily occurs signal light gain saturatiuon in the process and phenomena such as signal light is gradually resorbed.The missing of the wave band actual gain optical fiber
Significantly limit the promotion of laser power and lasing efficiency.Therefore, seek a kind of novel gain optical fiber for being suitble to the wave band
At key point to solve this problem.
Due to Tb3+There is stronger absorption in 1.75~2.0 mu m wavebands, pass through Tm3+/Tb3+Being co-doped with may be real
Tm in existing silica fibre3+The quantitatively regulating and controlling of fluorescence centre wavelength and gain spectra has both appropriate gain spectrum and matching optical fiber
Characteristic in terms of device is the optimal candidate gain material of 1.7 μm of optical fiber lasers research.
The co-dopant ions of silica fibre have different selections according to different requirements, but usually all (total only for sandwich layer
With in incorporation sandwich layer)；Due to the limitation of the factors such as preparation process, doping techniques, how to realize controllable Uniform Doped at
For a difficult point.Perhaps therefore, currently, both at home and abroad not yet about Tm3+/Tb3+It is co-doped with silica fibre structure and preparation aspect
Relevant report.
Summary of the invention
In order to solve the problems, such as that 1.7 μm of optical fiber laser appropriate gain optical fiber missings, the present invention provide a kind of 1.7 μm of optical fiber
Laser is co-doped with silica fibre and preparation method thereof with Tm/Tb, which has rare earth ion doped uniform, fluorescence centre wavelength
Properly, the features such as signal gain is high, be especially suitable for 1.7 mu m waveband gain fibres.
The technical solution adopted by the invention is as follows:
1.7 μm of optical fiber lasers are co-doped with silica fibre with Tm/Tb, are made of sandwich layer, inner cladding and surrounding layer, by quality
Percentages, the core layer formulation component are as follows: Tm (thd)3: 0.5~2%, SiCl4: 30~50%, GeCl4: 5~20%,
SiF4: 10~20%, POCl3: 10~20%, AlCl3: 5~10%, the inner cladding recipe ingredient are as follows: Tb (thd)3: 0.5~
2%, SiCl4: 30~50%, GeCl4: 5~20%, SiF4: 10~20%, POCl3: 10~20%, AlCl3: 5~10%, outside
Covering recipe ingredient includes: SiCl4: 40~50%, GeCl4: 5~15%, SiF4: 20~30%, POCl3: 10~15%.
Preferably, the sandwich layer, inner cladding, the cross sectional shape of surrounding layer are (whole for three concentric circles/annulus from the inside to the outside
Body constitutes cylindrical structure with one heart), wherein sandwich layer diameter is 6~10 μm, and inner cladding diameter is 10~30 μm, and outer cladding diameter is
125~130 μm.
The present invention also proposes that a kind of above-mentioned 1.7 μm of optical fiber lasers are co-doped with the preparation method of silica fibre with Tm/Tb, including
Following steps:
1) using chemical vapour deposition technique (MCVD) and in conjunction with chelate precursor doping techniques (CPDT), by Tm3+With chela
It closes object Tm (thd)3Form doping constitute the core layer formulation component, be uniformly passed through deposition in quartz ampoule and form preform core
Layer；Then by Tb3+With chelate Tb (thd)3Form doping constitute the inner cladding recipe ingredient, be uniformly passed through quartz ampoule
It is interior, it deposits to form prefabricated rods inner cladding in preform core layer surface；The surrounding layer recipe ingredient is uniformly passed through quartz ampoule again
It is interior, it deposits to form prefabricated rods surrounding layer on prefabricated rods inner cladding surface；Wherein by adjust number of deposition cycles come control sandwich layer,
Inner cladding, outsourcing interlayer size ratio；Finally preform is formed by high temperature sintering, contracting stick technique；
2) preform that will be prepared is drawn into required size using hot-drawn preparation method in silica fibre draw tower
Optical fiber.
Preferably, in step 1), depositing temperature is 1300~1450 DEG C, and deposition intraductal pressure difference is maintained at 50~120Pa；
Sintering temperature is 1850~1950 DEG C；Contracting stick temperature is 2050~2150 DEG C, and pressure difference is reduced to 20~40Pa.
Preferably, in step 2), fibre-optical drawing temperature be 1950~2100 DEG C, prefabricated rods delivery speed be 0.2~
0.5mm/min, drawing optical fiber is having a size of 125~130 μm.
Advantages of the present invention:
1, the silica fibre is made of sandwich layer, inner cladding and surrounding layer, and Tm is adulterated in center core layer3+, adulterate in inner cladding
Tb3+, pass through Tb3+It is co-doped with and realizes Tm3+Fluorescence spectrum quantitatively regulating and controlling；Lasing gain spectral region is 1650~1750nm, in fluorescence
A length of 1700~the 1730nm of cardiac wave.Compared to traditional thulium-doped silica fib, fluorescence centre wavelength of the invention is closer to 1.7 μm
Wave band, signal gain are high, are 1.7 μm of ideal gain fibres of optical fiber laser.
2, the silica fibre is prepared using mature MCVD+CPDT technology, optical fiber structure and doping concentration are controllable, can have
Effect guarantees Tm3+And Tb3+Equal doping concentration of rare earth ion size and its uniformity, and this method has success rate height, repeats
The good, simple operation and other advantages of property.
3, the silica fibre is compared to the soft glass gain fibre material such as rear-earth-doped fluoride fiber, antibody Monoclonal threshold
It is low to be worth power height, 1.7 mu m waveband transmission loss, and there is matched mature optical fibre device, is more suitable as 1.7 μm of light
Fibre laser gain fibre material.
Detailed description of the invention:
Fig. 1 is fiber end face schematic diagram；In figure, 1- sandwich layer, 2- inner cladding, 3- surrounding layer.
Fig. 2 is the optical fiber fluorescence spectrogram that embodiment 1 obtains.
Specific embodiment
Below with reference to embodiment and attached drawing, the invention will be further described.
Embodiment 1
1) using chemical vapour deposition technique and in conjunction with chelate precursor doping techniques, by Tm3+And Tb3+With chelate Tm
(thd)3Sedimentary in quartz ampoule, which is successively uniformly mixed, with the form of Tb (thd) is respectively formed prefabricated rods sandwich layer and inner cladding, then
Formula composition by adjusting adjacent deposited layers forms surrounding layer structure, finally forms optical fiber by high temperature sintering, contracting stick technique
Prefabricated rods.Wherein core layer formulation component are as follows: Tm (thd)3: 0.5%, SiCl4: 35%, GeCl4: 20%, SiF4: 18%, POCl3:
20%, AlCl3: 6.5%, the inner cladding recipe ingredient are as follows: Tb (thd)3: 2%, SiCl4: 35%, GeCl4: 20%, SiF4:
18%, POCl3: 20%, AlCl3: 5%, surrounding layer recipe ingredient includes: SiCl4: 40%, GeCl4: 15%, SiF4: 30%,
POCl3: 15%.Wherein depositing temperature is 1300 DEG C, and deposition intraductal pressure difference is maintained at 50Pa；Sintering temperature is 1850 DEG C；Contracting
Stick temperature is 2050 DEG C, and pressure difference is reduced to 20Pa.
2) by the above-mentioned preform prepared, using hot-drawn preparation method, in silica fibre draw tower, in wire-drawing temperature
Under the conditions of being 0.2mm/m for 1950 DEG C, delivery speed, it is drawn into the optical fiber having a size of 125 μm.The optical fiber is characterized in it
Sandwich layer 1, inner cladding 2, surrounding layer 3 diameter be respectively 6,10,125 μm (as shown in Figure 1), refringence between sandwich layer and inner cladding
It is 0.2%.
Use output wavelength for the above-mentioned optical fiber of the optical fiber laser pump of 1550nm, test obtains optical fiber fluorescence spectrum (such as
Shown in Fig. 2), gain spectral range is about 1650~1750nm, and fluorescence centre wavelength is 1707nm.
Embodiment 2
1) using chemical vapour deposition technique and in conjunction with chelate precursor doping techniques, by Tm3+And Tb3+With chelate Tm
(thd)3Sedimentary in quartz ampoule, which is successively uniformly mixed, with the form of Tb (thd) is respectively formed prefabricated rods sandwich layer and inner cladding, then
Formula composition by adjusting adjacent deposited layers forms surrounding layer structure, finally forms optical fiber by high temperature sintering, contracting stick technique
Prefabricated rods.Wherein core layer formulation component are as follows: Tm (thd)3: 1%, SiCl4: 40%, GeCl4: 18%, SiF4: 17%, POCl3:
18%, AlCl3: 6%, the inner cladding recipe ingredient are as follows: Tb (thd)3: 1%, SiCl4: 40%, GeCl4: 18%, SiF4:
17%, POCl3: 18%, AlCl3: 6%, surrounding layer recipe ingredient includes: SiCl4: 45%, GeCl4: 13%, SiF4: 27%,
POCl3: 15%.Wherein depositing temperature is 1350 DEG C, and deposition intraductal pressure difference is maintained at 85Pa；Sintering temperature is 1900 DEG C；Contracting
Stick temperature is 2100 DEG C, and pressure difference is reduced to 30Pa.
2) by the above-mentioned preform prepared, using hot-drawn preparation method, in silica fibre draw tower, in wire-drawing temperature
Under the conditions of being 0.35mm/m for 2000 DEG C, delivery speed, it is drawn into the optical fiber having a size of 128 μm.The optical fiber is characterized in
Its sandwich layer 1, inner cladding 2, surrounding layer 3 diameter be respectively 8,15,128 μm, between sandwich layer and inner cladding refringence be 0.4%.
Use output wavelength for the above-mentioned optical fiber of the optical fiber laser pump of 1550nm, test obtains optical fiber fluorescence spectrum,
Gain spectral range is about 1660~1760nm, and fluorescence centre wavelength is 1715nm.
Embodiment 3
1) using chemical vapour deposition technique and in conjunction with chelate precursor doping techniques, by Tm3+And Tb3+With chelate Tm
(thd)3Sedimentary in quartz ampoule, which is successively uniformly mixed, with the form of Tb (thd) is respectively formed prefabricated rods sandwich layer and inner cladding, then
Formula composition by adjusting adjacent deposited layers forms surrounding layer structure, finally forms optical fiber by high temperature sintering, contracting stick technique
Prefabricated rods.Wherein core layer formulation component are as follows: Tm (thd)3: 2%, SiCl4: 50%, GeCl4: 15%, SiF4: 15%, POCl3:
13%, AlCl3: 5%, the inner cladding recipe ingredient are as follows: Tb (thd)3: 0.5%, SiCl4: 50%, GeCl4: 15%, SiF4:
15%, POCl3: 13%, AlCl3: 6.5%, surrounding layer recipe ingredient includes: SiCl4: 50%, GeCl4: 10%, SiF4: 25%,
POCl3: 15%.Wherein depositing temperature is 1450 DEG C, and deposition intraductal pressure difference is maintained at 120Pa；Sintering temperature is 1950 DEG C；Contracting
Stick temperature is 2150 DEG C, and pressure difference is reduced to 40Pa.
2) by the above-mentioned preform prepared, using hot-drawn preparation method, in silica fibre draw tower, in wire-drawing temperature
Under the conditions of being 0.5mm/m for 2100 DEG C, delivery speed, it is drawn into the optical fiber having a size of 130 μm.The optical fiber is characterized in it
Sandwich layer 1, inner cladding 2, surrounding layer 3 diameter be respectively 10,30,130 μm, between sandwich layer and inner cladding refringence be 0.6%.
Use output wavelength for the above-mentioned optical fiber of the optical fiber laser pump of 1550nm, test obtains optical fiber fluorescence spectrum,
Gain spectral range is about 1675~1770nm, and fluorescence centre wavelength is 1724nm.
Claims (5)
1. a kind of 1.7 μm of optical fiber lasers are co-doped with silica fibre with Tm/Tb, it is characterised in that: by sandwich layer, inner cladding and surrounding layer
Composition, by mass percentage, the core layer formulation component are as follows: Tm (thd)3: 0.5~2%, SiCl4: 30~50%, GeCl4:
5~20%, SiF4: 10~20%, POCl3: 10~20%, AlCl3: 5~10%, the inner cladding recipe ingredient are as follows: Tb
(thd)3: 0.5~2%, SiCl4: 30~50%, GeCl4: 5~20%, SiF4: 10~20%, POCl3: 10~20%,
AlCl3: 5~10%, surrounding layer recipe ingredient includes: SiCl4: 40~50%, GeCl4: 5~15%, SiF4: 20~30%,
POCl3: 10~15%.
2. 1.7 μm of optical fiber lasers according to claim 1 are co-doped with silica fibre with Tm/Tb, it is characterised in that: the core
Layer, inner cladding, surrounding layer are successively whole from the inside to the outside to constitute cylindrical structure with one heart, wherein sandwich layer diameter is 6~10 μm, interior packet
Layer diameter is 10~30 μm, and outer cladding diameter is 125~130 μm.
3. 1.7 μm of optical fiber lasers described in claim 1 are co-doped with the preparation method of silica fibre with Tm/Tb, which is characterized in that packet
Include following steps:
1) using chemical vapour deposition technique (MCVD) and in conjunction with chelate precursor doping techniques (CPDT), by Tm3+With chelate
Tm(thd)3Form doping constitute the core layer formulation component, be uniformly passed through deposition in quartz ampoule and form prefabricated rods sandwich layer；So
Afterwards by Tb3+With chelate Tb (thd)3Form doping constitute the inner cladding recipe ingredient, be uniformly passed through in quartz ampoule, pre-
Stick core layer surface processed deposits to form prefabricated rods inner cladding；The surrounding layer recipe ingredient is uniformly passed through in quartz ampoule again, pre-
Stick inner cladding processed surface deposits to form prefabricated rods surrounding layer；Wherein by adjust number of deposition cycles come control sandwich layer, inner cladding,
Outsourcing interlayer size ratio；Finally preform is formed by high temperature sintering, contracting stick technique；
2) preform that will be prepared is drawn into the light of required size using hot-drawn preparation method in silica fibre draw tower
It is fine.
4. preparation method according to claim 3, which is characterized in that in step 1), depositing temperature is 1300~1450 DEG C,
Deposition intraductal pressure difference is maintained at 50~120Pa；Sintering temperature is 1850~1950 DEG C；Contracting stick temperature is 2050~2150 DEG C,
Pressure difference is reduced to 20~40Pa.
5. preparation method according to claim 3, which is characterized in that in step 2), fibre-optical drawing temperature be 1950~
2100 DEG C, prefabricated rods delivery speed is 0.2~0.5mm/min, and drawing optical fiber is having a size of 125~130 μm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111129924A (en) * | 2019-12-23 | 2020-05-08 | 中国科学院西安光学精密机械研究所 | High-power 1.7-micron all-fiber laser |
| CN112851127A (en) * | 2021-01-16 | 2021-05-28 | 威海长和光导科技有限公司 | High-gain Ho3+/Tm3+/Yb3+Co-doped quartz optical fiber and preparation method thereof |
| CN114349355A (en) * | 2022-01-21 | 2022-04-15 | 广东工业大学 | Rare earth doped multi-component oxide glass optical fiber for 1.7 mu m waveband laser generation and application thereof |
Citations (4)
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| CN114349355A (en) * | 2022-01-21 | 2022-04-15 | 广东工业大学 | Rare earth doped multi-component oxide glass optical fiber for 1.7 mu m waveband laser generation and application thereof |
| CN114349355B (en) * | 2022-01-21 | 2022-11-25 | 广东工业大学 | Rare earth doped multi-component oxide glass optical fiber for 1.7 mu m waveband laser generation and application thereof |
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