CN103605247B - Double-layer cascade connection optical limiter - Google Patents
Double-layer cascade connection optical limiter Download PDFInfo
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- CN103605247B CN103605247B CN201310496768.8A CN201310496768A CN103605247B CN 103605247 B CN103605247 B CN 103605247B CN 201310496768 A CN201310496768 A CN 201310496768A CN 103605247 B CN103605247 B CN 103605247B
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Abstract
The optical limiter of a kind of multilamellar cascade, the dimethylformamide dispersion liquid of SWCN and the dimethyl formamide solution of ZnPc the double-layer cavity transparent vessel carrying it forms.Put in order by regulation nonlinear dielectric, concentration etc. can realize the regulation of optical Limiting curve.Present invention could apply to lasing safety field, protection human body or sensor damage from high light.
Description
Technical field
The present invention relates to optical limiter, particularly a kind of double-layer cascade connection optical limiter
Background technology
Laser is sent out in manufacture, medicine, science and technology, security fields due to advantages such as its high intensity, coherence, collimations
Wave the most important effect.But, laser is also the light source of a kind of danger, to sensitive optic, human eye,
Skin etc. have destructive destruction, and the use the most how adding light laser becomes safely the most of concern
Focus.In order to effectively control the energy density of laser projections, it has been proposed that optical limiter (Optical limiter)
Concept, has optical transmittance under high-light-energy metric density low, the characteristic that under low optical energy density, transmitance is high.This
Device allows the light beam less than presetting light intensity to pass through, but when light intensity will stop light beam higher than optical limiter part when presetting
Pass through, thus avoid target object thereafter to be damaged by excess energy laser.Optical Limiting device may be used for light
Learn the protection of sensor, the security protection etc. of Laser Experiments room human eye, be with a wide range of applications.
In recent years, people in order to make can the optical limiter of actual application, nonlinear response is strong, response finding
The material aspect of spectral width is made that substantial amounts of effort.It is currently used for the nonlinear optical material of optical limiter by non-thread
Property delustring mechanism is broadly divided into several classes such as nonlinear scattering (NLS) and anti-saturated absorption (RSA).The former is such as
CNT, Graphene etc., is the most representative nonlinear scattering material.Pertinent literature is such as delivered
" Carbon nanotubes for optical limiting " (the 10th phase 40 in 2002 at SCI periodical " Carbon "
Volume, page 1,789 1797), where it is proposed optical Limiting device based on carbon nano tube dispersion liquid, and use z to scan
Detailed performance characterization is done with pumping-detection method；And United States Patent (USP) " BROADBAND OPTICAL
LIMITER BASED ON NANO-GRAPHENE AND METHOD OF FABRICATING
SAME " (numbering: mention in US20110304934A1) based on monolayer, form the few-layer graphene alkene and nanometer gold
The optical limiter of grain dispersion liquid.Optical limiter based on nonlinear scattering has stronger nonlinear response, energy above
Enough it is operated in ultraviolet to infrared broad wave band；And novel nano-material is compared traditional white carbon black suspension and is difficult to group
Poly-, the stability of device is enhanced.But, owing to the mechanism of nonlinear scattering is limited, these are single
The simple mechanism of mechanism can only obvious response to by laser significant to heat effect (nanosecond or longer pulsewidth), and right
Ultrashort pulse (psec and following) responds very overly soft pulse to without optical Limiting effect, actual apply in be restricted.The latter
As being published in " the Molecular Engineering of Peripherally And of SCI magazine " Advanced Materials "
Axially Modified Phthalocyanines " (phase March the 15th in 2003,22-32 page) and be published in
" the Porphyrins and phthalocyanines as materials for optical limiting " of " Synthetic Metals "
(2004 the 3rd phase volume 141,231-243 page), phthalocyanine, porphyrin and the metal derivative thereof studied in literary composition
It is typical non-linear absorption material, has the biggest non-linear absorption coefficient and response time quickly, it is possible to be used for
The lasing safety of ultrashort pulse.But, non-linear absorption material depends on transition between molecular energy level, operation wavelength
General narrower, as phthalocyanine is operated at visible light wave range (420nm～650nm), it is impossible to be used alone to manufacture broadband
Optical limiter.
The general character of above homogenous material unitary system also resides in, and the characteristic of optical Limiting is determined by the characteristic of material itself,
The most greatly limit the space of regulation.And in reality application, the light intense irradiation that target allows is uncertain.
In order to make up the shortcoming of the single mechanism of homogenous material, people are investigated the conjugation of two kinds of different nonlinear materials
With non-conjugated mixing." Enhanced Optical Limiting Effects in " Advanced Materials "
Porphyrin-Covalently Functionalized Single-Walled Carbon Nanotubes " (20 phases in 2008,
Page 511 515) and " Chemical Physic letters " in " Linear and nonlinear spectroscopic studies
Of phthalocyanine-carbon nanotube blends " (465 phases in 2008,265-271 page), porphyrin merit
The carbon nano-tube solution of energyization (conjugation mixing) and CNT phthalocyanine mixed liquor (non-conjugated mixing) is non-linear
Character characterizes respectively.The CNT of porphyrin functionalization is owing to electronics is between Porphyrin Molecule and CNT
Transferance, shows preferable non-linear nature.But this method preparation complexity, needs accurate reaction condition,
Material category used is also restrained.CNT phthalocyanine mixed liquor (non-conjugated mixing) is although part can be realized
Optical Limiting curve adjustment, but non-linear test shows that its optical limiting properties is the best, it is impossible to meet reality application
Requirement.
Summary of the invention
In view of the shortcoming and defect of above method, the present invention proposes a kind of double-layer cascade connection optical limiter, this optical limiter
Optical Limiting curve can be regulated, wide service band, wide response time domain can be realized.
The technical solution of the present invention is as follows:
A kind of double-layer cascade connection optical limiter, including nonlinear dielectric and the transparent vessel of this medium of carrying, its feature exists
In: it is the double cavity structure of arranged adjacent in described transparent vessel；It is respectively provided with nonlinear scattering in described two-chamber
Material and inversion saturation absorbing material.
Described nonlinear scattering material is SWCN dispersion liquid in dimethylformamide.
Described inversion saturation absorbing material is 2,9,16,23-tetra-tert-29H, and 31H-Phthalocyanine Zinc is at dimethyl formyl
Solution in amine.
Putting in order of described nonlinear dielectric arranges as required.
Compared with the prior art the present invention, has the advantage that
1, the working range of device can be widened.If contain SWCN organic dispersions and ZnPc simultaneously
Solution, then device is to ultraviolet near infrared broadband, and long pulse is flushed to the wide time domain of ultrashort pulse (ps) and swashs
Light all has optical Limiting effect
2, kind and the material concentration of every layer of nonlinear dielectric are changed, it is possible to achieve the regulation of optical Limiting curve.
Accompanying drawing explanation
Fig. 1 is the structural representation of double-layer cascade connection optical limiter of the present invention
Fig. 2 is effective non-linear absorption coefficient and the relation of light intensity of the optical limiter that experiment is measured, described light limit
Width device is to comprise SWCN (SWNT) and the double-deck optical limiter of ZnPc (ZnPc).
Fig. 3 is the optical Limiting curve according to the calculated optical limiter of experimental data, i.e. light transmission rate and incident illumination
Strong relation, described optical limiter is identical with Fig. 2, for comprising SWCN (SWNT) and zinc phthalein
The double-deck optical limiter of cyanines (ZnPc).
Fig. 4 is the relation of the optical Limiting curve of the optical limiter that experiment is measured, i.e. light transmission rate and incident intensity, institute
The optical limiter stated is the double-deck optical Limiting of the single-walled carbon nanotube dispersion liquid comprising variable concentrations and ZnPc solution
Device.
Detailed description of the invention
The present invention is further illustrated with example below in conjunction with the accompanying drawings, but these explanations can not be understood to limit
The scope of the present invention, protection scope of the present invention is defined by the claims, any at the claims in the present invention base
Change on plinth is all protection scope of the present invention.
First refer to the structural representation that Fig. 1, Fig. 1 are double-layer cascade connection optical limiter of the present invention, in figure, non-thread
Property medium 1 is loaded in the chamber in transparent glass container 2, the number in chamber as required depending on.
This example demonstrates that, application CNT and ZnPc bi-material can form double-layer cascade connection optical limiter,
The regulation of nonlinear response can be realized by the kind changing concentration and every layer of medium.The light limit of the present embodiment gained
Width device performance measurement uses perforate z scan method, and experiment laser is 532nm, 6ns.This Cascaded Double-layer optical Limiting
The preparation method of device is as follows:
(1) CNT (SWNT) powder is joined in dimethylformamide (referred to as DMF), initial concentration
For 0.05g/l.Gained mixed liquor high-energy ultrasonic rod ultrasonic disperse 2min, is then placed in ultrasonic 4h in ultrasonic pond,
Last again with the ultrasonic 1min of ultrasonic rod.Products therefrom 5500rpm is centrifuged 90min, removes aggregate and obtains surely
Fixed non-settling dispersion liquid, it is standby that this dispersion liquid DMF is diluted to variable concentrations.ZnPc (2,9,16,23-
Tetra-tert-29H, 31H-Phthalocyanine Zinc) same being dissolved in DMF with variable concentrations.
(2) making quartz container as shown in Figure 1, the number in chamber is two.The single wall carbon of 0.033mg/mL is received
Mitron (SWNT) dispersion liquid and 0.1mg/mL ZnPc (ZnPc) solution are injected separately into quartz glass to be held
In two chambeies of device, obtain comprising the optical limiter of bi-material.According to the light order by medium, permissible
It is divided into two kinds of situations.If laser passes through ZnPc solution after first passing through SWNT dispersion liquid, then it is designated as
SWNT-ZnPc, otherwise in like manner.The result of non-linear test as shown in Figures 2 and 3, as seen from the figure, changes
Become putting in order of nonlinear dielectric and can affect non-linear behaviour and the optical Limiting curve of device.
(3) the concentration collocation of solution, the optical limiter of available different performance are changed.The result of non-linear test such as Fig. 4,
It can be seen that concentration collocation and medium put in order and can change the optical Limiting curve of device.
Claims (1)
1. a double-layer cascade connection optical limiter, including nonlinear dielectric and the transparent vessel of this medium of carrying, its feature
It is: be the double cavity structure of arranged adjacent in described transparent vessel；It is respectively provided with single wall carbon in described two-chamber to receive
Mitron dispersion liquid in dimethylformamide and 2,9,16,23-tetra-tert-29H, 31H-Phthalocyanine Zinc is at dimethyl methyl
Solution in amide；Putting in order of described nonlinear dielectric arranges as required.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2705383C1 (en) * | 2019-01-23 | 2019-11-07 | Федеральное государственное бюджетное учреждение науки Удмуртский федеральный исследовательский центр Уральского отделения Российской академии наук | Method for nonlinear optical power limitation based on an aqueous suspension of carbon nanotubes |
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| CN103869575B (en) * | 2014-03-14 | 2016-08-17 | 天津理工大学 | A kind of solubilized carbon nanotubes-aluminium nitride composite suspension liquid amplitude limiter |
| CN104090447B (en) * | 2014-07-14 | 2016-10-19 | 中国科学院半导体研究所 | Passive light amplitude limiter |
| CN105137693B (en) * | 2015-09-29 | 2018-01-26 | 上海理工大学 | A kind of optical limiter of tunable threshold value |
| CN111929758A (en) * | 2020-08-12 | 2020-11-13 | 中国科学院长春光学精密机械与物理研究所 | Laser protective equipment and protective system |
| CN112047326A (en) * | 2020-09-14 | 2020-12-08 | 中国科学院长春光学精密机械与物理研究所 | Carbon nanotube phthalocyanine nanocomposite and preparation method and application thereof |
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| CN1971395A (en) * | 2006-12-13 | 2007-05-30 | 中国科学院光电技术研究所 | Method for manufacturing photonic crystal optical limiter |
| CN103197483A (en) * | 2013-04-23 | 2013-07-10 | 中国科学院上海光学精密机械研究所 | Pneumatic-control optical limiter |
| CN103576412A (en) * | 2013-10-18 | 2014-02-12 | 西安交通大学 | Composite optical limiter |
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| US8228584B2 (en) * | 2009-02-24 | 2012-07-24 | Ecole Normale Superieure De Lyon | Passive optical limiter having nonlinear material |
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| CN1971395A (en) * | 2006-12-13 | 2007-05-30 | 中国科学院光电技术研究所 | Method for manufacturing photonic crystal optical limiter |
| CN103197483A (en) * | 2013-04-23 | 2013-07-10 | 中国科学院上海光学精密机械研究所 | Pneumatic-control optical limiter |
| CN103576412A (en) * | 2013-10-18 | 2014-02-12 | 西安交通大学 | Composite optical limiter |
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| 基于SBS光限幅和金属酞菁光限幅相结合的复合型光限幅器的研究;哈斯乌力吉等;《物理学报》;20111231;第60卷(第10期);第104212-2页左栏第2段至第104212-4页第1段及图3 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2705383C1 (en) * | 2019-01-23 | 2019-11-07 | Федеральное государственное бюджетное учреждение науки Удмуртский федеральный исследовательский центр Уральского отделения Российской академии наук | Method for nonlinear optical power limitation based on an aqueous suspension of carbon nanotubes |
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