CN207976397U - A kind of device of enhancing raman spectral signal - Google Patents
A kind of device of enhancing raman spectral signal Download PDFInfo
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- CN207976397U CN207976397U CN201721491884.0U CN201721491884U CN207976397U CN 207976397 U CN207976397 U CN 207976397U CN 201721491884 U CN201721491884 U CN 201721491884U CN 207976397 U CN207976397 U CN 207976397U
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Abstract
A kind of device of enhancing raman spectral signal, including light source, sample to be tested and Raman probe；The light of the light source transmitting is irradiated to the sample to be tested, and the light scatters and/or refract to the Raman probe through the sample to be tested；Further include scattering enhancement layer, the sample to be tested is placed on the scattering enhancement layer；Light source selector is arranged between the light source and the sample to be tested.The advantageous effect of the application is：The setting of light source selector so that optical source wavelength is optional, meets the use of different wave length requirement；The setting for scattering enhancement layer can reinforce the intensity of diffusing scattering, improve Raman signal signal-to-noise ratio, be conducive to the detection of low content substance.
Description
Technical field
The application belongs to spectral measurement methods field, specifically, being related to a kind of device of enhancing raman spectral signal.
Background technology
Raman spectrum (Raman spectra), is a kind of scattering spectrum.Raman spectrum analysis method is to be based on India scientist
C.V. the Raman scattering effect that Raman (Raman) is found, a pair scattering spectrum different from incident light frequency are analyzed to obtain
To molecular vibration, rotation aspect information, and applied to a kind of analysis method of molecular structure research.
When photon injects substance, one kind in multiple and different events will occur.Photon can lead to without any change
It crosses, it can also be absorbed or it can also be scattered.In the case of scattering, the direction of travel of photon is changed by scattering events
Become.In general, the energy of photon not change-this be referred to as elastic scattering.Sometimes, the energy of photon can change-this just claims
Be inelastic scattering or Raman scattering.The size of energy change is exactly equal to the energy that substance vibrates.By vibration, institute " permits
Perhaps energy (frequency) " is usually formed the discrete values collection definitely defined, and the spectrum of inelastic scattering light generally also shows one
The one or more numerical value (frequency band for being actually referred to as Raman bands) definitely defined of group and these be generally also all and object
The characteristic of qualitative correlation.
The signal for the scattering spectrum that existing Raman spectrum detecting device obtains is weaker, and especially measured matter is in sample
When middle content is relatively low, it is difficult to detect or detect that very weak signal is not enough to carry out spectrum analysis.Therefore it needs to detection
The detectability of device is transformed, to obtain stronger spectral signal.
Invention content
In view of this, technical problems to be solved in this application there is provided it is a kind of enhancing raman spectral signal device,
Diffusing scattering performance can be improved, improve the signal-to-noise ratio of Raman signal, to be conducive to detect the substance of low content.
In order to solve the above-mentioned technical problem, this application discloses it is a kind of enhancing raman spectral signal device, and use with
Lower technical solution is realized.
A kind of device of enhancing raman spectral signal, including light source, sample to be tested and Raman probe；The light source transmitting
Light is irradiated to the sample to be tested, and the light scatters and/or refract to the Raman probe through the sample to be tested；Also wrap
Scattering enhancement layer is included, the sample to be tested is placed on the scattering enhancement layer；It is arranged between the light source and the sample to be tested
Light source selector.
Further, the scattering enhancement layer is layer structure, includes sorbing material layer and nanogold successively from bottom to top
Belong to layer.
Further, the nano metal layer is nanogold and/or nano silver.
Further, the sorbing material layer rough surface.
Further, the sorbing material layer is Kynoar.
Further, the light source selector is monochromatic lens, diffraction grating or Fabry-Petot etalon.
Further, light source processor, the sample to be tested are arranged between the light source selector and the sample to be tested
Spectrum processor is arranged between the Raman probe.
Further, the light source processor includes filter, the first convex lens, the second convex lens successively from end is entered to outlet
Mirror, the first diaphragm and collimating mirror.
Further, the spectrum processor includes third convex lens, the 4th convex lens, second successively from end is entered to outlet
Diaphragm, the 5th convex lens and acquisition camera lens.
Preferably, the light source, the light source selector and the light source processor are in first axle together；The spectrum
Processor and the Raman probe are in second axis together；The first axle and the second axis are rectangular, and respectively with
Plane where the sample to be tested is in 135 degree and 45 degree of angles.
Compared with prior art, the application can be obtained including following technique effect：The setting of light source selector so that light
Source wavelength is optional, meets the use of different wave length requirement；The setting for scattering enhancement layer, can reinforce the intensity of diffusing scattering, improve
Raman signal signal-to-noise ratio is conducive to the detection of low content substance.
Certainly, implementing any product of the application must be not necessarily required to reach all the above technique effect simultaneously.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please do not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of the application raman spectral signal device.
Fig. 2 is the structural schematic diagram that the application scatters enhancement layer.
Wherein, in figure：
1, light source；2, monochromatic lens；3, light source processor；4, support column；5, enhancement layer is scattered；6, sample to be tested；7, spectrum
Processor；8, Raman probe；9, sorbing material layer；10, nano metal layer.
Specific implementation mode
Presently filed embodiment is described in detail below in conjunction with accompanying drawings and embodiments, thereby how the application is applied
Technological means solves technical problem and reaches the realization process of technical effect to fully understand and implement.
A kind of device of enhancing raman spectral signal, as shown in Figure 1, including light source 1, sample to be tested 6 and Raman probe 8.
The light that light source 1 is sent out is radiated on sample to be tested 6, is received by Raman probe 8 after 6 diffusing scattering of sample to be tested.8 energy of Raman probe
It is enough that Raman spectrum is converted into electric signal, the connecting pin of Raman probe 8 is electrically connected with processing module, you can transmit electric signal
It is handled to processing module is further, is analyzed and researched to spectrum convenient for staff.
Arranging light source selector at light source 1 is closed on, the present embodiment light source selector selects monochromatic lens 2.Monochromatic lens 2 are by referring to
Signal drives, and reference signal is a kind of optical signal, and specific wavelength can be according to the different and different of sample to be tested, through experiment
Obtain the reference signal of most optimum wavelengths.Light source selector can also be diffraction grating, Fabry-Petot etalon or other,
Output can be filtered to original light source signal, to select a narrow wavelength band as last transmitting.
Diffraction grating is often referred to simply as " grating ", a kind of by very important light intensive, that equidistantly parallel groove is constituted
Learn device.It carries out dispersion using more seam diffraction and interference effect, by the light beam being mapped on grating by the different of wavelength, convenient for defeated
Go out the selection of optical source wavelength.
Fabry-Petot etalon is a kind of multi-beam interferometer being made of two pieces of parallel glass plates, two blocks of glass
It is spaced fixation with the hollow spacer object of regular length between plate, wherein the opposite inner surface of two pieces of glass plates all has high reflection
Rate.When the frequency of incident light meets its resonance condition, transmission spectrum will appear very high peak value, correspond to very high transmission
Rate can be carried out the selection of output light source wavelength in this way.
Light source processor 3 is arranged in the rear end of monochromatic lens 2, handles light source, high-quality needed for Raman scattering to meet
Light source is scattered to sample to be tested 6.Spectrum processor 7 is arranged in 6 rear end of sample to be tested, to the light scattered through sample to be tested 6
Spectrum is handled.Raman probe 8 is arranged in the rear end of spectrum processor 7, for receiving Raman spectrum after processing and being converted into
Electric signal.
Support column 4 is arranged in area to be measured, and scattering enhancement layer 5 is arranged on support column 4.Sample to be tested 6 is placed in scattering enhancement layer 5
Upper surface.The material of support column 4 can be one or more of metal, quartz, acrylic or glass.Scattering enhancement layer 5 is
Layer structure, as shown in Fig. 2, including sorbing material layer 9 and nano metal layer 10.Sorbing material layer 9 is located at lower section, nano metal
Layer 10 is located at the top of sorbing material layer 9, and the two is connected.The lower surface of sorbing material layer 9 is connect with the upper end of support column 4.
Sorbing material layer 9 can be Kynoar (Polyvinylidene fluoride) sorbing material layer, and gather
The surface of vinylidene sorbing material layer is uniform rough surface, and uniform rough surface is more advantageous to aggregation and fixed nanometer
Metal.Nano metal layer can be nanogold or nano silver.Certainly, nano metal material may be other metal materials,
It is limitations of the present invention that the specific material of nano metal layer, which should not be construed,.
Due to scattering the rough surface of enhancement layer 5, there is special surface optical phenomena, the noise of Raman signal can be improved
Than so that Raman system can also measure measured matter to the lower substance of measured matter content in sample to be tested
Raman spectrum.
Light source processor 3 includes filter, exciting light and filter background impurity light for receiving the light source transmitting；The
One convex lens, the light of the scattering for receiving filter transmitting and by the anaclasis of scattering at directional light；Second convex lens,
Directional light is simultaneously focused by directional light for receiving second convex lens transmitting；First diaphragm, it is convex for receiving second
The light of lens focus, and its light intensity is passed through by the control of the size of diaphragm；Collimating mirror, for receiving through diaphragm
Light, and by light refraction at parallel rays.Filter, the first convex lens, the second convex lens, the first diaphragm and collimating mirror are pressed into
The sequence of outlet is held to set gradually.The final output for being used as light source processor 3 by the parallel rays of collimating mirror is sent.
Spectrum processor 7 includes third convex lens, for assembling the light velocity emitted through sample to be tested, and is reflected into flat
Row light beam；4th convex lens, for the light for passing through third convex lens to be focused；Second diaphragm passes through its light for controlling
The size of line intensity；5th convex lens, being used for will be by the anaclasis of the second diaphragm at collimated light beam；Camera lens is acquired, for adopting
Collection signal simultaneously sends the signal to Raman probe 8.Third convex lens, the 4th convex lens, the second diaphragm, the 5th convex lens and acquisition
The sequence that camera lens is pressed into end to outlet is set gradually.
Preferably, light source 1, monochromatic lens 2 and light source processor 3 are in same axis, claim first axle；Spectrum processor 7
It is in same axis with Raman probe 8, claims second axis.First axle and second axis are rectangular, and respectively with sample to be tested 6
Place plane is in 135 degree and 45 degree of angles.The setting of angle can ensure that maximum luminous flux is scattered and reflects.
The "front", "rear" that the application is previously mentioned is the front and back of broad sense, refers mainly to light trend be reference, is not stringent
Position is front and back in meaning.
The advantageous effect of the application is：The setting of monochromatic lens so that optical source wavelength is optional, meets making for different wave length requirement
With；The setting for scattering enhancement layer can reinforce the intensity of diffusing scattering, improve Raman signal signal-to-noise ratio, be conducive to low content substance
Detection.
A kind of device of the enhancing raman spectral signal provided above the embodiment of the present application, is described in detail.
The description of the example is only used to help understand the method for the present application and its core ideas；Meanwhile for the one of this field
As technical staff, according to the thought of the application, there will be changes in the specific implementation manner and application range, to sum up institute
It states, the contents of this specification should not be construed as limiting the present application.
Some vocabulary has such as been used to censure specific components in specification and claim.Those skilled in the art answer
It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name
The difference of title is used as the mode for distinguishing component, but is used as the criterion of differentiation with the difference of component functionally.Such as logical
The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In "." substantially " refer in receivable error range, those skilled in the art can be described within a certain error range solution
Technical problem basically reaches the technique effect.Specification subsequent descriptions are to implement the better embodiment of the application, so described
Description is being not limited to scope of the present application for the purpose of the rule for illustrating the application.The protection domain of the application
When subject to appended claims institute defender.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Including so that commodity or system including a series of elements include not only those elements, but also include not clear
The other element listed, or further include for this commodity or the intrinsic element of system.In the feelings not limited more
Under condition, the element that is limited by sentence "including a ...", it is not excluded that including the element commodity or system in also
There are other identical elements.
Several preferred embodiments of the application have shown and described in above description, but as previously described, it should be understood that the application
Be not limited to form disclosed herein, be not to be taken as excluding other embodiments, and can be used for various other combinations,
Modification and environment, and the above teachings or related fields of technology or knowledge can be passed through in application contemplated scope described herein
It is modified.And changes and modifications made by those skilled in the art do not depart from spirit and scope, then it all should be in this Shen
It please be in the protection domain of appended claims.
Claims (8)
1. a kind of device of enhancing raman spectral signal, including light source (1), sample to be tested (6) and Raman probe (8)；The light
The light of source (1) transmitting is irradiated to the sample to be tested (6), and the light is scattered and/or refracted to through the sample to be tested (6)
The Raman probe (8)；It is characterized in that：Further include scattering enhancement layer (5), the sample to be tested (6) is placed in the scattering and increases
On strong layer (5)；Light source selector is arranged between the light source (1) and the sample to be tested (6)；The light source selector and described
Light source processor (3) is arranged between sample to be tested (6), spectrum is arranged between the sample to be tested (6) and the Raman probe (8)
Processor (7)；The light source processor (3) from enter end to outlet successively include filter, the first convex lens, the second convex lens,
First diaphragm and collimating mirror.
2. enhancing the device of raman spectral signal according to claim 1, it is characterised in that：The spectrum processor (7) from
It includes third convex lens, the 4th convex lens, the second diaphragm, the 5th convex lens and acquisition camera lens successively to enter end to outlet.
3. enhancing the device of raman spectral signal according to claim 1, it is characterised in that：The scattering enhancement layer (5) is
Layer structure includes sorbing material layer (9) and nano metal layer (10) successively from bottom to top.
4. enhancing the device of raman spectral signal according to claim 3, it is characterised in that：The nano metal layer (10) is
Nanogold and/or nano silver.
5. enhancing the device of raman spectral signal according to claim 3, it is characterised in that：Sorbing material layer (9) table
Face is coarse.
6. enhancing the device of raman spectral signal according to claim 4, it is characterised in that：The sorbing material layer (9) is
Kynoar.
7. enhancing the device of raman spectral signal according to claim 1, it is characterised in that：The light source selector is monochrome
Mirror (2), diffraction grating or Fabry-Petot etalon.
8. enhancing the device of raman spectral signal according to claim 7, it is characterised in that：The light source (1), the light source
Selector and the light source processor (3) are in first axle together；The spectrum processor (7) and the Raman probe (8) are same
In second axis；The first axle and the second axis are rectangular, and are put down respectively with where the sample to be tested (6)
Face is in 135 degree and 45 degree of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721491884.0U CN207976397U (en) | 2017-11-10 | 2017-11-10 | A kind of device of enhancing raman spectral signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721491884.0U CN207976397U (en) | 2017-11-10 | 2017-11-10 | A kind of device of enhancing raman spectral signal |
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| Publication Number | Publication Date |
|---|---|
| CN207976397U true CN207976397U (en) | 2018-10-16 |
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ID=63770900
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721491884.0U Active CN207976397U (en) | 2017-11-10 | 2017-11-10 | A kind of device of enhancing raman spectral signal |
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| Country | Link |
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- 2017-11-10 CN CN201721491884.0U patent/CN207976397U/en active Active
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