CN104505700B - In infrared super continuous spectrums production method - Google Patents
In infrared super continuous spectrums production method Download PDFInfo
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- CN104505700B CN104505700B CN201410779010.XA CN201410779010A CN104505700B CN 104505700 B CN104505700 B CN 104505700B CN 201410779010 A CN201410779010 A CN 201410779010A CN 104505700 B CN104505700 B CN 104505700B
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- continuous spectrums
- infrared super
- super continuous
- capillary
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Abstract
The production method of infrared super continuous spectrums in a kind of, infrared super continuous spectrums in being obtained with ultrashort pulse by lens to quartzy photonic crystal fiber pumping, using the inventive method can be produced in silica fibre 20dB with a width of 1940nm covering 1630 into 3570nm infrared super continuum source.
Description
Technical field
The infrared super continuous spectrums the present invention relates in, it is particularly a kind of in infrared super continuous spectrums production method.
Background technology
In infrared super continuum source because it is in various fields, such as:Spectroscopy, microscope, medical diagnosis and biological doctor
Etc. has important application and turns into widely studied problem.Quartzy photonic crystal fiber (photonic crystal fiber, letter
Be designated as PCF) appearance the generation of high power super continuum source is realized important breakthrough.Utilize continuous light and ultrashort pulse pump
The research that Pu quartz PCF produces super continuum source has been widely reported.Producing super continuum source using quartz glass has
Following advantage：First, quartz glass has very high transition temperature, and temperature in use is up to more than 1000 DEG C, and typical fluorine zirconium
Glass only has spends more 200.Second, the output tail optical fiber of most of optical fiber laser is all silica fibre, therefore is drawn by quartz glass
The optical fiber being made easily with pumped optical fibre laser welding.3rd, quartz glass can easily be drawn into microstructured optical fibers.The
Four, the optical fiber being drawn into by quartz glass has very high intensity, at least more order of magnitude greater than soft glass optical fiber.5th, stone
The raw material of English glass are easily obtained and price is relatively low.
The report produced on super continuum source in silica fibre is more, but is due to quartz glass dispersion and accumulative damage
The limitation of consumption all can not be by spectrum widening to more than 3 μm.
The content of the invention
To overcome above-mentioned the deficiencies in the prior art, the production method of infrared super continuous spectrums during present invention offer is a kind of.Utilize
This method can be produced in silica fibre 20dB with a width of 1940nm covering 1630 into 3570nm infrared super continuous spectrums light
Source.
The technical solution of the present invention is as follows：
The production method of infrared super continuous spectrums in a kind of, its feature is that this method is to stone with ultrashort pulse by lens
Infrared super continuous spectrums during English photonic crystal fiber pumping is obtained, described quartzy photonic crystal fiber is arranged for interior surrounding layer airport
It is classified as hexagonal double-clad photon crystal optical fibre, inner air bore dia φ1, outer air bore dia φ2Divide with pitch of holes Λ
It is not：φ1=0~3 μm, φ2=1~3 μm, Λ=1~4 μm, fiber lengths：L=5~15cm；Described ultrashort pulse is
1.95 μm of ultrashort pulses, pulse peak power is：30~60kW, pulsewidth is：1~10ps, mean power is：20W~50W.
The preparation method of described photonic crystal fiber comprises the following steps：
1) it is φ to prepare inner and outer diameter ratio1/ Λ quartz ampoule, interior surrounding layer ratio is φ2/ Λ quartz ampoule, and it is interior
Footpath is 13mm quartz socket tube；
2) wire-drawing temperature be 1800 DEG C under conditions of, on wire drawing machine by inner and outer diameter ratio be φ1/ Λ quartz ampoule
The inner cladding capillary that external diameter is 1mm is drawn into, is φ by inner and outer diameter ratio2It is 1mm's that/Λ quartz ampoule, which is drawn into external diameter,
Surrounding layer capillary；
3) after above-mentioned capillary two ends are sealed, the capillary of a blow-by is stayed to be used as fibre core, using method of piling by institute
The sealed surrounding layer capillary in two ends stated is dense arrangement in 14mm hexagonal moulds in the length of side, and interior three layers of capillary is replaced with
Inner cladding capillary, one of center replace with both ends open capillary, form bundle of capillary tubes；
4) outer tube one end is closed, in the tubule of the pumping of closing termination one of the outer tube, then by described capillary
Restrain in the outer tube described in being fitted into, form prefabricated rods；
5) described prefabricated rods are drawn into described quartzy photonic crystal fiber on the wire drawing machine for have air-extractor；
6) it is L=5~15cm described quartzy photonic crystal fiber to be cut out into length with fiber cutter, is described
Quartzy photonic crystal fiber.
The beneficial effects of the invention are as follows：
20dB can be produced in silica fibre with a width of 1940nm coverings using the inventive method and 1630 arrive 3570nm's
In infrared super continuum source.
Brief description of the drawings
Fig. 1 is the silica fibre sectional view for producing high power super continuous spectrums；
Fig. 2 is the fibre-optical dispersion and limitation loss curve map of the embodiment of the present invention 1；
Fig. 3 is the fibre-optical dispersion and limitation loss curve map of the embodiment of the present invention 2；
Fig. 4 is the super continuous spectrums of the embodiment of the present invention 1,2.
Embodiment
In order to be better understood from the present invention, present disclosure, but this is expanded on further with reference to embodiment and accompanying drawing
The content of invention is not limited to the following examples.
Embodiment 1
The production method of infrared super continuous spectrums in a kind of, with ultrashort pulse by lens to quartzy photonic crystal fiber pumping
Infrared super continuous spectrums in obtaining, the structural parameters of described photonic crystal fiber are：φ1=1 μm, φ2=1.5 μm, Λ=2 μm,
L=10cm.The pumping pulse parameter of selection is as follows：Pulsewidth is 5ps, and wavelength is 1.95 μm, and peak power is 40kW.Described light
The preparation method of photonic crystal fiber comprises the following steps：
1) quartz ampoule that inner and outer diameter ratio is 0.5 is prepared, interior surrounding layer ratio is 0.75 quartz ampoule, and internal diameter is
13mm quartz socket tube；
2) wire-drawing temperature be 1800 DEG C under conditions of, on wire drawing machine by inner and outer diameter ratio be φ1/ Λ quartz ampoule
The inner cladding capillary that external diameter is 1mm is drawn into, inner and outer diameter ratio is φ2It is the outer of 1mm that/Λ quartz ampoule, which is drawn into external diameter,
Cladding capillaries；
3) will above-mentioned capillary two ends seal after (stay the capillary of a blow-by to be used as fibre core), using method of piling by institute
The sealed surrounding layer capillary in two ends stated is dense arrangement in 14mm hexagonal moulds in the length of side, and interior three layers of capillary is replaced with
Inner cladding capillary, one of center replace with both ends open capillary, form bundle of capillary tubes；
4) outer tube one end is closed, in the tubule of the pumping of closing termination one of the outer tube, then by described capillary
Restrain in the outer tube described in being fitted into, form prefabricated rods；
5) described prefabricated rods are drawn into the optical fiber on the wire drawing machine for have air-extractor.
6) 10cm optical fiber is cut with fiber cutter, the pumping pulse is coupled into the optical fiber using lens, just may be used
Infrared super continuum source in obtaining.As shown in curve b in Fig. 4.Fig. 2 is that the fibre-optical dispersion of the embodiment of the present invention 1 and limitation are damaged
Consume curve map.
Embodiment 2
The production method of infrared super continuous spectrums in a kind of, with ultrashort pulse by lens to quartzy photonic crystal fiber pumping
Infrared super continuous spectrums in obtaining, the structural parameters of described photonic crystal fiber are：φ1=1.2 μm, φ2=2.1 μm, the μ of Λ=3
M, L=9cm.The pumping pulse parameter of selection is as follows：Pulsewidth is 5ps, and wavelength is 1.95 μm, and peak power is 40kW.Described
The preparation method of photonic crystal fiber comprises the following steps：
1) quartz ampoule that inner and outer diameter ratio is 0.4 is prepared, interior surrounding layer ratio is 0.7 quartz ampoule, and internal diameter is
13mm quartz socket tube；
2) wire-drawing temperature be 1800 DEG C under conditions of, on wire drawing machine by inner and outer diameter ratio be φ1/ Λ quartz ampoule
The inner cladding capillary that external diameter is 1mm is drawn into, inner and outer diameter ratio is φ2It is the outer of 1mm that/Λ quartz ampoule, which is drawn into external diameter,
Cladding capillaries；
3) will above-mentioned capillary two ends seal after (stay the capillary of a blow-by to be used as fibre core), using method of piling by institute
The sealed surrounding layer capillary in two ends stated is dense arrangement in 14mm hexagonal moulds in the length of side, and interior three layers of capillary is replaced with
Inner cladding capillary, one of center replace with both ends open capillary, form bundle of capillary tubes；
4) outer tube one end is closed, in the tubule of the pumping of closing termination one of the outer tube, then by described capillary
Restrain in the outer tube described in being fitted into, form prefabricated rods；
5) described prefabricated rods are drawn into the optical fiber on the wire drawing machine for have air-extractor.
6) 10cm optical fiber is cut with fiber cutter, the pumping pulse is coupled into the optical fiber using lens, just may be used
Infrared super continuum source in obtaining.As shown in curve c in Fig. 4.Fig. 3 is that the fibre-optical dispersion of the embodiment of the present invention 2 and limitation are damaged
Consume curve map.
Experiment shows that 20dB can be produced in silica fibre using the inventive method arrives with a width of 1940nm coverings 1630
Infrared super continuum source in 3570nm.
Claims (1)
1. the production method of infrared super continuous spectrums in a kind of, it is characterised in that including：
Infrared super continuous spectrums in being obtained with ultrashort pulse by lens to quartzy photonic crystal fiber pumping, described quartzy photon
Crystal optical fibre is that interior surrounding layer airport is arranged as hexagonal double-clad photon crystal optical fibre, inner air bore dia φ1, it is outer
Layer of air bore dia φ2It is respectively with pitch of holes Λ：φ1=0~3 μm, φ2=1~3 μm, Λ=1~4 μm, φ1/ Λ=0.4
~0.5；Fiber lengths：L=5cm~15cm；Described ultrashort pulse is 1.95 μm, and pulse peak power is：30kW~60kW,
Pulsewidth is 1ps~10ps, and mean power is 20W~50W.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104808288B (en) * | 2015-04-14 | 2018-02-13 | 中国科学院上海光学精密机械研究所 | High efficiency and heat radiation big mode field area mid-infrared light photonic crystal fiber and its laser |
| WO2017044637A1 (en) * | 2015-09-08 | 2017-03-16 | University Of Washington | Low contrast silicon nitride-based metasurfaces |
| CN109411995B (en) * | 2018-12-10 | 2020-11-10 | 西南大学 | Intermediate infrared ultrafast laser source device |
Citations (5)
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| CN1673138A (en) * | 2005-03-25 | 2005-09-28 | 中国科学院上海光学精密机械研究所 | Prepn process of prefabricated rod for photon crystal fiber |
| US20120027031A1 (en) * | 2010-07-29 | 2012-02-02 | Jian Liu | Amplified Broadband Fiber Laser Source |
| CN102508333A (en) * | 2011-11-22 | 2012-06-20 | 中国科学院上海光学精密机械研究所 | Double clad all-solid-state photonic crystal fiber and preparation method thereof |
| CN202749673U (en) * | 2012-08-03 | 2013-02-20 | 北京工业大学 | Intermediate infrared super-continuum spectrum optical fiber laser device excited by super-continuum spectrum light source |
| EP2597513A1 (en) * | 2008-02-08 | 2013-05-29 | Fianium Limited | A source of optical supercontinuum radiation |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1673138A (en) * | 2005-03-25 | 2005-09-28 | 中国科学院上海光学精密机械研究所 | Prepn process of prefabricated rod for photon crystal fiber |
| EP2597513A1 (en) * | 2008-02-08 | 2013-05-29 | Fianium Limited | A source of optical supercontinuum radiation |
| US20120027031A1 (en) * | 2010-07-29 | 2012-02-02 | Jian Liu | Amplified Broadband Fiber Laser Source |
| CN102508333A (en) * | 2011-11-22 | 2012-06-20 | 中国科学院上海光学精密机械研究所 | Double clad all-solid-state photonic crystal fiber and preparation method thereof |
| CN202749673U (en) * | 2012-08-03 | 2013-02-20 | 北京工业大学 | Intermediate infrared super-continuum spectrum optical fiber laser device excited by super-continuum spectrum light source |
Non-Patent Citations (2)
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| How long wavelengths can one extract from silica-core fibers?;Jesper Lægsgaard等;《OPTICS LETTERS》;20131101;第38卷(第21期);第4518页第1栏第3段至第4519页第2栏第3段、图1-2 * |
| 一种双包层低损耗色散平坦光子晶体光纤;吴侠等;《光器件》;20111231(第12期);第21页第1栏第2段至第22页第1栏第1段，第23页第2栏第3段至第24页第1栏第1段、图1 * |
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