CN109211846A - A kind of non-linear transmissivity test device - Google Patents
A kind of non-linear transmissivity test device Download PDFInfo
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- CN109211846A CN109211846A CN201811277405.4A CN201811277405A CN109211846A CN 109211846 A CN109211846 A CN 109211846A CN 201811277405 A CN201811277405 A CN 201811277405A CN 109211846 A CN109211846 A CN 109211846A
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- light intensity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
Abstract
This application discloses a kind of non-linear transmissivity test devices, comprising: light source module, for providing excitation beam；Light intensity attenuation module, for excitation beam to be decayed to predetermined power；Condenser lens, for the light beam after decaying to be focused on sample position；Detector, for measuring the transmitted light relevant nonlinear optical characteristics after passing through sample.The application uses the design of light intensity attenuation module, while guaranteeing incident intensity uniform spatial distribution, incident intensity can be realized close continuously adjustable, it is adjusted to required intensity, it avoids conventional test methodologies and needs the error that repeatedly measurement excitation light intensity introduces manually, and only need to carry out primary calibration to light intensity attenuation module, the measurement of light intensity relevant nonlinear optical property can be fast implemented, time of measuring is substantially reduced, the requirement to sample stability is reduced.
Description
Technical field
The present invention relates to nonlinear optical technology fields, more particularly to a kind of non-linear transmissivity test device.
Background technique
With the rapid development in the fields such as optic communication and optical information processing, for the Research Requirements day of nonlinear optical material
Benefit increases.Optical information storage, photoswitch, optical modulator, optical limiter and laser processing and detection, laser spectral analysis etc.
The application of aspect all relies on the progress of nonlinear optical material.Non-linear transmission curve is for characterizing material nonlinearity
One of the important means of optical property, by changing the intensity of incident light, measurement passes through the transmitted intensity after nonlinear material,
Calculating depicts sample transmission rate with the change curve of incident intensity, passes through the full of the available material of further Fitting Analysis
With the important parameter of the nonlinear optical properties such as absorption, anti-saturated absorption, Multiphoton Absorbtion, nonlinear refraction.
Non-linear transmission curve test is to study one of the most common experimental technique of nonlinear optical material.In conventional measurement
In method for testing, as shown in Figure 1, light source 01 (such as high power laser light) is focused on sample by lens 03, being added before lens 03 can
It adjusts gradual change neutral-density filter 02 to adjust incident intensity, first tests incident optical power P with detector 040, divided by focus face
Product obtains incident intensity I0, then detector 04 is placed in and tests the optical power P for penetrating sample after sample1, further calculate
Cross rate T=P1/P0, by manually adjusting 02 position of optical filter, change incident intensity, re-read P0And P1Value, can be obtained
T is about I0Change curve.
Above method advantage is test method simplicity, does not need complex instrument equipment, but also along with several disadvantages: first
First, high power ultra-short pulse laser is widely used in non-linear optical field in recent years, it is contemplated that the damage threshold of optical element,
Its spot size is usually larger (commercial 35fs pulse laser outgoing optical beam spot diameter is up to 10mm), by tapered optical filter
Easily leading to hot spot afterwards, spatially intensity distribution unevenly influences optical quality, this will affect optical to material nonlinearity
The characterization of matter and the calculating of relevant parameter；Secondly, traditional measurement method takes a long time, due to needing to manually adjust in measurement process
Optical filter position is until detector display is intended to measured power value, and after stable reading, then the incident performance number of record measures again
The light intensity for crossing sample increases the requirement to sample stability, and every time read incident optical power when due to detector place
The variation of position is readily incorporated measurement error.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of non-linear transmissivity test device, it can be to avoid more manually
The error that secondary measurement excitation light intensity introduces, shortens time of measuring.Its concrete scheme is as follows:
A kind of non-linear transmissivity test device, comprising:
Light source module, for providing excitation beam；
Light intensity attenuation module, for the excitation beam to be decayed to predetermined power；
Condenser lens, for the light beam after decaying to be focused on sample position；
Detector, for measuring through the transmitted light relevant nonlinear optical characteristics after the sample.
Preferably, in above-mentioned non-linear transmissivity test device provided in an embodiment of the present invention, the light intensity attenuation mould
Block includes movable supporting frame, at least two pieces of ladder neutral-density filters on the mobile bracket；
Each optical filter can be moved to predeterminated position by the movable supporting frame.
Preferably, in above-mentioned non-linear transmissivity test device provided in an embodiment of the present invention, the shape of the optical filter
Shape is bar shaped or circle.
Preferably, in above-mentioned non-linear transmissivity test device provided in an embodiment of the present invention, the movable supporting frame
For motorized precision translation stage.
Preferably, in above-mentioned non-linear transmissivity test device provided in an embodiment of the present invention, the condenser lens is
Optical lens, curved reflector or parabolic mirror.
Preferably, in above-mentioned non-linear transmissivity test device provided in an embodiment of the present invention, the detector is light
Power meter, spectrometer or photodetector.
Preferably, in above-mentioned non-linear transmissivity test device provided in an embodiment of the present invention, the light intensity attenuation mould
The center of block, the condenser lens and the sample is point-blank.
A kind of non-linear transmissivity test device provided by the present invention, comprising: light source module, for providing exciting light
Beam；Light intensity attenuation module, for excitation beam to be decayed to predetermined power；Condenser lens is focused for the light beam after decaying
In sample position；Detector, for measuring the transmitted light relevant nonlinear optical characteristics after passing through sample.It is declined in this way using light intensity
The design for subtracting module can realize incident intensity while guaranteeing incident intensity uniform spatial distribution and closely connect
Continue adjustable, avoids conventional test methodologies and need the error that repeatedly measurement excitation light intensity introduces manually, and only need to decline to light intensity
Subtract module and carry out primary calibration, the measurement of light intensity relevant nonlinear optical property can be fast implemented, when substantially reducing measurement
Between, the requirement to sample stability is reduced, solves and needs to manually adjust incidence in the Experiments of Optics such as existing non-linear transmission
Luminous intensity frequently changes luminous intensity measurement error caused by detector position and hot spot after gradual change neutral-density filter
The problems such as spatial light intensity of generation is unevenly distributed.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of existing non-linear transmission curve test device；
Fig. 2 is the structural schematic diagram of non-linear transmissivity test device provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of ladder neutral-density filter provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of non-linear transmissivity test device, as shown in Figure 2, comprising:
Light source module 1, for providing excitation beam；
Light intensity attenuation module 2, for excitation beam to be decayed to predetermined power；
Condenser lens 3, for the light beam after decaying to be focused on sample position；
Detector 4, for measuring the transmitted light relevant nonlinear optical characteristics after passing through sample.
In above-mentioned non-linear transmissivity test device provided in an embodiment of the present invention, using setting for light intensity attenuation module
Meter can realize incident intensity while guaranteeing incident intensity uniform spatial distribution and closely be continuously adjusted, avoid
Conventional test methodologies need the errors that repeatedly measurement excitation light intensity introduces manually, and only need to carry out one to light intensity attenuation module
Secondary calibration can fast implement the measurement of light intensity relevant nonlinear optical property, substantially reduce time of measuring, reduce to sample
The requirement of product stability solves in the Experiments of Optics such as existing non-linear transmission and needs to manually adjust incident intensity, frequently changes
The spatial light intensity that luminous intensity measurement error caused by change detector position and hot spot generate after gradual change neutral-density filter
The problems such as being unevenly distributed.
It should be noted that transmitted light relevant nonlinear optical characteristics can be for transmitted optical power or due to non-linear absorption
Caused characteristic spectral emission (such as multiphoton fluorescence).In the specific implementation, in order to measure through the transmitted light function after sample
Rate, detector can be light power meter；And in order to measure, by non-linear emission spectrum of the transmitted light after sample etc., other are non-
Linear optics property, detector can be spectrometer or photodetector.
Further, in the specific implementation, in above-mentioned non-linear transmissivity test device provided in an embodiment of the present invention,
Light intensity attenuation module may include movable supporting frame, at least two pieces of ladder neutral-density filters on mobile bracket；Respectively
Optical filter can be moved to predeterminated position by movable supporting frame.
In practical applications, as shown in Fig. 2, light source module 1 generates excitation beam (power P)；Light intensity attenuation module 2 can
It is made of the ladder neutral-density filter of preset quantity (such as two pieces), every tablet filter is fixed on movable supporting frame, by electricity
Brain can control movable supporting frame and optical filter be moved to predeterminated position, and combination constitutes the adjustable light intensity of optical density approximate continuous and declines
Subtract system, excitation beam is through light intensity attenuation to predetermined power P0(P0=T0* P, T0It is the optical filter in light intensity attenuation module in advance
If corresponding transmissivity when position), line focus lens 3 focus on sample position again in this way, the transmitted optical power after sample
P1It can be measured by detector 4.
Movable supporting frame is controlled by computer, optical filter is moved to different predeterminated positions, can measure sample transmission rate T
Rely on incident intensity I0Change curve；Wherein, T=P1/P0, I0=P0/S0, S0For the facula area of sample position.
Specifically, the present invention forms (Sigma Koki using two pieces of ladder neutral-density filters with light intensity attenuation module
Company, product type SND-12) for, as shown in figure 3, the position 1-11 corresponds to different optical density and transmissivity, 0 position is
Blank (i.e. transmissivity T0=100%).Every tablet filter is fixed on motorized precision translation stage, is moved to corresponding position by computer control
(0-11), is shown in Table one, has been arranged to form the adjustable light intensity attenuation system of optical density approximate continuous.
Table one
In order to ensure the accuracy of light intensity attenuation module transmissivity, sample can be removed before testing begins, is shown in Table two, moved
Dynamic two optical filters arrive corresponding predeterminated position respectively, by power of the test beams after light intensity attenuation module, calculate not
The corresponding transmissivity T with predeterminated position0, and then the data in table two are calibrated, it measures, enters without duplicate measurements later
Light intensity is penetrated, the transmitted light intensity by sample only need to be directly measured.
Table two
Preferably, the shape of optical filter can select bar shaped or circle, i.e. beam attenuation module can be by least two pieces of bar shapeds
Or circular shape neutral-density filter composition；In order to improve efficiency, movable supporting frame can select motorized precision translation stage, accordingly
Ground, motorized precision translation stage can use rotation translation stage replacement, in addition, motorized precision translation stage can also be changed to manual translation platform or other removable
Bracket.
In the specific implementation, in above-mentioned non-linear transmissivity test device provided in an embodiment of the present invention, condenser lens
There can be the optical element of focusing function for optical lens, curved reflector or parabolic mirror etc..Light source module can be with
Selection for femtosecond laser light source, specific wavelength, pulsewidth can be determined by sample and experiment demand.
In the specific implementation, in above-mentioned non-linear transmissivity test device provided in an embodiment of the present invention, in order to improve
The center of the accuracy rate of test result, light intensity attenuation module, condenser lens and sample can be set point-blank.
To sum up, a kind of non-linear transmissivity test device provided in an embodiment of the present invention, comprising: light source module, for mentioning
For excitation beam；Light intensity attenuation module, for excitation beam to be decayed to predetermined power；Condenser lens, for it will decay after
Light beam focuses on sample position；Detector, for measuring the transmitted light relevant nonlinear optical characteristics after passing through sample.The present invention
It can be real to incident intensity while guaranteeing incident intensity uniform spatial distribution using the design of light intensity attenuation module
It is now close continuously adjustable, it avoids conventional test methodologies and needs the error that repeatedly measurement excitation light intensity introduces manually, and only need pair
Light intensity attenuation module carries out primary calibration, can fast implement the measurement of light intensity relevant nonlinear optical property, substantially reduce
Time of measuring reduces the requirement to sample stability, solves and needs to adjust manually in the Experiments of Optics such as existing non-linear transmission
Incident intensity is saved, frequently changes luminous intensity measurement error caused by detector position and hot spot and is filtered by gradual change neutral density
The problems such as spatial light intensity generated after mating plate is unevenly distributed.
It should be noted that specific component as described in this embodiment, such as light source module, ladder neutral density filter
Merely to more preferably illustrating this invention, reality is forming parameter attributes such as piece, condenser lens, detector etc., constructs and uses
Certain details on can be varied, combination including component and assemble, these deformations and application all should belong to of the invention
Range.
Finally, it is to be noted that, herein, relational terms be used merely to by an entity or operation with it is another
A entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this actual
Relationship or sequence.Moreover, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion,
So that the process, method, article or equipment for including a series of elements not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Non-linear transmissivity test device provided by the present invention is described in detail above, tool used herein
Principle and implementation of the present invention are described for body example, the above embodiments are only used to help understand this hair
Bright method and its core concept；At the same time, for those skilled in the art, according to the thought of the present invention, specific real
Apply in mode and application range that there will be changes, in conclusion the content of the present specification should not be construed as to limit of the invention
System.
Claims (7)
1. a kind of non-linear transmissivity test device characterized by comprising
Light source module, for providing excitation beam；
Light intensity attenuation module, for the excitation beam to be decayed to predetermined power；
Condenser lens, for the light beam after decaying to be focused on sample position；
Detector, for measuring through the transmitted light relevant nonlinear optical characteristics after the sample.
2. non-linear transmissivity test device according to claim 1, which is characterized in that the light intensity attenuation module includes
Movable supporting frame, at least two pieces of ladder neutral-density filters on the mobile bracket；
Each optical filter can be moved to predeterminated position by the movable supporting frame.
3. non-linear transmissivity test device according to claim 2, which is characterized in that the shape of the optical filter is item
Shape or circle.
4. non-linear transmissivity test device according to claim 3, which is characterized in that the movable supporting frame is electronic
Translation stage.
5. non-linear transmissivity test device according to claim 1, which is characterized in that the condenser lens is optical lens
Mirror, curved reflector or parabolic mirror.
6. non-linear transmissivity test device according to claim 1, which is characterized in that the detector is optical power
Meter, spectrometer or photodetector.
7. non-linear transmissivity test device according to any one of claims 1 to 6, which is characterized in that the light intensity declines
Subtract the center of module, the condenser lens and the sample point-blank.
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| CN201811277405.4A CN109211846A (en) | 2018-10-30 | 2018-10-30 | A kind of non-linear transmissivity test device |
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| CN201811277405.4A CN109211846A (en) | 2018-10-30 | 2018-10-30 | A kind of non-linear transmissivity test device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031434A (en) * | 2019-04-08 | 2019-07-19 | 大族激光科技产业集团股份有限公司 | Laser light transmission rate test device and its test method |
| CN114371151A (en) * | 2020-10-15 | 2022-04-19 | 深圳莱宝高科技股份有限公司 | Transmittance testing method and transmittance testing system |
| CN115452779A (en) * | 2022-11-10 | 2022-12-09 | 季华实验室 | Method, device, equipment and storage medium for detecting transmittance distribution |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105736A (en) * | 1986-07-21 | 1987-09-16 | 北京工业学院 | A kind of power calibricating instrument for pulsed laser |
| CN101477047A (en) * | 2009-01-07 | 2009-07-08 | 苏州大学 | Nonlinear absorption measuring method based on lens geometric optical imaging |
| CN102016550A (en) * | 2008-02-21 | 2011-04-13 | 热费希尔科学公司 | Gas analyzer system |
| CN102096325A (en) * | 2009-12-10 | 2011-06-15 | 上海微电子装备有限公司 | Light intensity attenuation device and method |
| CN102368099A (en) * | 2011-11-21 | 2012-03-07 | 沈阳仪表科学研究院 | Neutral density filter with linearly tapered transmissivity |
| CN105607173A (en) * | 2016-01-07 | 2016-05-25 | 西安工业大学 | Circular radial-gradient neutral density filter and preparation method and apparatus for the same |
| CN106198450A (en) * | 2016-07-22 | 2016-12-07 | 中国工程物理研究院激光聚变研究中心 | A kind of device measuring material nonlinearity absorption curve |
| CN107561017A (en) * | 2017-09-08 | 2018-01-09 | 中国人民解放军国防科技大学 | Optical material nonlinear absorption rate micro-area measurement method, device and system |
| CN108303374A (en) * | 2018-02-05 | 2018-07-20 | 河南师范大学 | A kind of nonlinear measurement system changing light intensity |
-
2018
- 2018-10-30 CN CN201811277405.4A patent/CN109211846A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105736A (en) * | 1986-07-21 | 1987-09-16 | 北京工业学院 | A kind of power calibricating instrument for pulsed laser |
| CN102016550A (en) * | 2008-02-21 | 2011-04-13 | 热费希尔科学公司 | Gas analyzer system |
| CN101477047A (en) * | 2009-01-07 | 2009-07-08 | 苏州大学 | Nonlinear absorption measuring method based on lens geometric optical imaging |
| CN102096325A (en) * | 2009-12-10 | 2011-06-15 | 上海微电子装备有限公司 | Light intensity attenuation device and method |
| CN102368099A (en) * | 2011-11-21 | 2012-03-07 | 沈阳仪表科学研究院 | Neutral density filter with linearly tapered transmissivity |
| CN105607173A (en) * | 2016-01-07 | 2016-05-25 | 西安工业大学 | Circular radial-gradient neutral density filter and preparation method and apparatus for the same |
| CN106198450A (en) * | 2016-07-22 | 2016-12-07 | 中国工程物理研究院激光聚变研究中心 | A kind of device measuring material nonlinearity absorption curve |
| CN107561017A (en) * | 2017-09-08 | 2018-01-09 | 中国人民解放军国防科技大学 | Optical material nonlinear absorption rate micro-area measurement method, device and system |
| CN108303374A (en) * | 2018-02-05 | 2018-07-20 | 河南师范大学 | A kind of nonlinear measurement system changing light intensity |
Non-Patent Citations (3)
| Title |
|---|
| JUN ZHANG等: "Thickness-dependent nonlinear optical properties of CsPbBr3 perovskite nanosheets", 《OPTICS LETTERS》 * |
| 徐玉华等: "一种基于中性密度滤光片的可调光衰减器实现方法", 《国外电子测量技术》 * |
| 王海晏: "《光电技术原理及应用》", 31 December 2008 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031434A (en) * | 2019-04-08 | 2019-07-19 | 大族激光科技产业集团股份有限公司 | Laser light transmission rate test device and its test method |
| CN114371151A (en) * | 2020-10-15 | 2022-04-19 | 深圳莱宝高科技股份有限公司 | Transmittance testing method and transmittance testing system |
| CN114371151B (en) * | 2020-10-15 | 2024-04-19 | 深圳莱宝高科技股份有限公司 | Transmittance testing method |
| CN115452779A (en) * | 2022-11-10 | 2022-12-09 | 季华实验室 | Method, device, equipment and storage medium for detecting transmittance distribution |
| CN115452779B (en) * | 2022-11-10 | 2023-03-14 | 季华实验室 | Method, device, equipment and storage medium for detecting transmittance distribution |
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Application publication date: 20190115 |