CN207816830U - Become wavelength excitation and the adjustable Raman spectrometer of spectral region - Google Patents
Become wavelength excitation and the adjustable Raman spectrometer of spectral region Download PDFInfo
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- CN207816830U CN207816830U CN201820297839.XU CN201820297839U CN207816830U CN 207816830 U CN207816830 U CN 207816830U CN 201820297839 U CN201820297839 U CN 201820297839U CN 207816830 U CN207816830 U CN 207816830U
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- balzed grating
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Abstract
The utility model proposes a kind of excitation of change wavelength and the adjustable Raman spectrometers of spectral region, including laser, the laser beam of laser transmitting excites Raman light scattering caused by sample to entrance slit, above-mentioned Raman light is changed into parallel beam incident to plane balzed grating, surface after the first plane mirror, the reflection of the first concave mirror successively, plane balzed grating, is fixed on rotating platform, plane balzed grating, can be made to rotate by rotating platform；Reflected light after the light splitting of plane balzed grating, focuses on the surface of detector after the second concave mirror and second plane mirror successively, and detector is connected with signal processing system, and signal processing system is also connected with display.The laser of a variety of different wave lengths can be selected as excitation light source due to the adjustable angle of plane balzed grating, in above-mentioned Raman spectrometer；For a certain specific optical maser wavelength, also the raman spectroscopy measurement of wider range can be realized by the angle of adjusting plane balzed grating,.
Description
Technical field
The utility model is related to Raman spectrometer more particularly to a kind of excitation of change wavelength and the adjustable Raman lights of spectral region
Spectrometer.
Background technology
Raman spectrometer chemical industry, biology, agricultural, food, the detection application of the fields such as mine it is increasingly extensive, according to actually answering
With situation, common excitation light source generally uses single-frequency solid or semiconductor laser, excitation wavelength include 266nm, 355nm,
405nm, 450nm, 466nm, 485nm, 532nm, 785nm, 1064nm etc..Overwhelming majority Raman spectrometer can only use at present
A kind of single-frequency laser is as excitaton source, to ensure that higher spectral resolution, wave number measurement range are defined generally to 2500cm-1-4000cm-1.Due to often there is different maximum excitation wavelengths for different samples, to realize different sample detections
It generally requires more Raman spectrometers to be used cooperatively, increases testing cost and the complexity of operation.
Utility model content
In order to solve the problems in the existing technology.The utility model proposes a kind of excitation of change wavelength and spectral regions
Adjustable Raman spectrometer.
To achieve the goals above, the utility model proposes a kind of excitation of change wavelength and the adjustable Raman lights of spectral region
Solid, gas or semiconductor laser can be selected in spectrometer, including laser, the laser, and launch wavelength is variable, described to swash
For Raman light scattering caused by the laser beam excitation sample of light device transmitting to entrance slit, it is flat that above-mentioned Raman light passes through first successively
It is changed into parallel beam incident after face speculum, the reflection of the first concave mirror to plane balzed grating, surface, the plane is dodged
Credit grating is fixed on rotating platform, plane balzed grating, can be made to rotate by the rotating platform；It glares through the plane
Reflected light after grid light splitting focuses on the surface of detector after the second concave mirror and second plane mirror successively,
The detector is connected with signal processing system, and the signal processing system is also connected with display.
Preferably, the laser beam of the laser transmitting is incident on sample directly or by optical fiber.
Preferably, Raman light caused by the laser beam excitation sample of the laser transmitting is directly incident or passes through light
Fibre is incident on entrance slit.
Preferably, the detector is using linear array or face battle array image device.
Preferably, the detector uses CCD or cmos device.
The advantageous effect of the program of the utility model is above-mentioned change wavelength excitation and the adjustable Raman light of spectral region
The laser of a variety of different wave lengths can be selected as excitation light source due to the adjustable angle of plane balzed grating, in spectrometer；It is right
In a certain specific optical maser wavelength, also the raman spectroscopy measurement of wider range can be realized by the angle of adjusting plane balzed grating,.
Involved by the utility model become wavelength excitation and the adjustable Raman spectrometer of spectral region have it is compact-sized, small excellent
Point.
Description of the drawings
Fig. 1 shows the structure for becoming wavelength excitation and the adjustable Raman spectrometer of spectral region involved by the utility model
Schematic diagram.
Reference numeral：1- lasers, 2- samples, 3- entrance slits, the first plane mirrors of 4-, the first concave reflections of 5-
Mirror, 6- plane balzed grating,s, 7- rotating platforms, 8- turn knobs, the second concave mirrors of 9-, 10- second plane mirrors,
11- detectors, 12- signal processing systems, 13- displays.
Specific implementation mode
Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, the excitation of change wavelength and the adjustable Raman spectrometer of spectral region involved by the utility model include
Solid, gas or semiconductor laser can be selected in laser 1, the laser 1, and launch wavelength is variable, and the laser 1 can
It is replaced according to the excitation wavelength demand of different samples, is drawn caused by the laser beam excitation sample 2 that the laser 1 emits
Graceful light scattering is to entrance slit 3, and in the present embodiment, the laser beam that the laser 1 emits is incident on directly or by optical fiber
Sample 2；Raman light is directly incident caused by the laser beam excitation sample 2 that the laser 1 emits or is incident on by optical fiber
Entrance slit 3.
Above-mentioned Raman light is changed into collimated light beam after the first plane mirror 4, the reflection of the first concave mirror 5 successively
It is incident on 6 surface of plane balzed grating, the plane balzed grating, 6 is fixed on rotating platform 7, passes through the rotating platform 7
Plane balzed grating, 6 can be made to rotate, the specific rotating platform 7 can be used automatically controlled or manually control mode realizes rotation,
In the present embodiment, the rotating platform 7 realizes rotation using manually control mode, specifically on the rotating platform 7
Equipped with turn knob 8, rotated by 8 rotation-controlled platform 7 of manual rotation knob.
Reflected light after the plane balzed grating, 6 light splitting passes through the second concave mirror 9 and the second plane successively
The surface that detector 11 is focused on after speculum 10, since the light splitting of plane balzed grating, 6 acts on, the light focusing of different wave length
Different location on 11 surface of detector, the detector 11 are connected with signal processing system 12, by the signal processing
System 12 carries out calculating analysis, with output spectrum data；The signal processing system 12 is also connected with display 13, by described
Display 13 shows the curve of spectrum.In the present embodiment, linear array or face battle array image device can be used in the detector 11, specifically
CCD or cmos device can be used in the detector 11；The signal processing system 12 and display 13 are the prior art,
This is not repeated.
Change wavelength excitation involved by the utility model and the adjustable Raman spectrometer of spectral region, since plane glares
The adjustable angle of grid 6, therefore the laser of a variety of different wave lengths can be selected as excitation light source；For a certain specific laser wave
It is long, also it can realize the raman spectroscopy measurement of wider range by the angle of adjusting plane balzed grating, 6.Involved by the utility model
And change wavelength excitation and the adjustable Raman spectrometer of spectral region have the advantages that it is compact-sized, small.
There are correspondence, wave number ν meets with location of pixels x for the wave number of spectral measurement and the pixel of spectrometer detectors
Multinomial ν=a+bx+cx2+dx3+ ... functional relation error can be met using linear fit and wanted in the present embodiment
It asks, that is, uses ν=a+bx.The specific calibration joining method for becoming wavelength excitation and the adjustable Raman spectrometer of spectral region
Include the following steps：
Step 1 excites the sample 2 of known Raman spectrum using laser 1.
Step 2 adjusts turn knob 8, so that plane balzed grating, 6 is rotated so that Laser interferometers are just in Raman spectrogram
Except display, the wave-number range of Raman spectrum at this time is determined as first segment Raman spectrum position, records turn knob 8 this moment
Position be first position.
Step 3 utilizes two Raman peaks of the sample 2 of known Raman spectrum in step 2, the i.e. ν and x of two Raman peaks
It is each in first segment Raman spectrum curve acquired in step 2 to determine it is known that seeking the parameter a and b in ν=a+bx
The wave number of the first segment Raman spectrum curve and intensity are exported data form (such as Microsoft Excel) by the wave number of point position,
It is denoted as the first data form.
Step 4 adjusts turn knob 8, and the Raman peaks of gained in step 2 is made to move to left so that wave number initial value increases, at this time
Parameter b numerical value remains unchanged, and parameter a changes, and becomes a1, the wave-number range of Raman spectrum at this time is determined as second segment
Raman spectrum position, the position for recording turn knob 8 this moment are the second position.
Step 5, using a Raman peaks of the sample 2 of known Raman spectrum in step 4, the i.e. ν and x of the Raman peaks
Know, seeks ν=a1Parameter a in+bx1, to determine various point locations in second segment Raman spectrum curve acquired in step 4
Wave number, the wave number of the second segment Raman spectrum curve and intensity are exported into data form, are denoted as the second data form.
Step 6 splices the second data form obtained in the first data form and step 5 that are obtained in step 3,
And then generate spliced Raman spectrum curve graph.
If wanting to splice multistage Raman spectrum curve, principle is same as above, and this will not be repeated here.Pass through above method
The Raman spectrum of the laser 1 of a certain launch wavelength of Raman spectrometer is calibrated, if replacing laser 1, is needed
It recalibrates.When the Raman spectrometer that user buys calibrated mistake measures the sample of unknown Raman spectrum, directly
Turn knob 8 is adjusted to corresponding mark position, two data forms of acquisition are spliced again later, to generate
Spliced Raman spectrum curve graph.
Claims (5)
1. a kind of change wavelength excitation and the adjustable Raman spectrometer of spectral region, it is characterised in that：Including laser, the laser
Solid, gas or semiconductor laser can be selected in device, and launch wavelength is variable, and the laser beam of the laser transmitting excites sample
Generated Raman light scattering is to entrance slit, and above-mentioned Raman light is successively by the first plane mirror, the first concave mirror
It is changed into parallel beam incident after reflection to plane balzed grating, surface, the plane balzed grating, is fixed on rotating platform,
Plane balzed grating, can be made to rotate by the rotating platform；Reflected light after plane balzed grating, light splitting is passed through successively
The surface of detector, the detector and signal processing system are focused on after second concave mirror and second plane mirror
It is connected, the signal processing system is also connected with display.
2. change wavelength excitation according to claim 1 and the adjustable Raman spectrometer of spectral region, it is characterised in that：It is described
The laser beam of laser transmitting is incident on sample directly or by optical fiber.
3. change wavelength excitation according to claim 1 and the adjustable Raman spectrometer of spectral region, it is characterised in that：It is described
Raman light is directly incident caused by the laser beam excitation sample of laser transmitting or is incident on entrance slit by optical fiber.
4. change wavelength excitation according to claim 1 and the adjustable Raman spectrometer of spectral region, it is characterised in that：It is described
Detector is using linear array or face battle array image device.
5. change wavelength excitation according to claim 4 and the adjustable Raman spectrometer of spectral region, it is characterised in that：It is described
Detector uses CCD or cmos device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820297839.XU CN207816830U (en) | 2018-03-05 | 2018-03-05 | Become wavelength excitation and the adjustable Raman spectrometer of spectral region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820297839.XU CN207816830U (en) | 2018-03-05 | 2018-03-05 | Become wavelength excitation and the adjustable Raman spectrometer of spectral region |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207816830U true CN207816830U (en) | 2018-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820297839.XU Expired - Fee Related CN207816830U (en) | 2018-03-05 | 2018-03-05 | Become wavelength excitation and the adjustable Raman spectrometer of spectral region |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303407A (en) * | 2018-03-05 | 2018-07-20 | 哈尔滨工业大学（威海） | Become wavelength excitation and the adjustable Raman spectrometer of spectral region and calibration joining method |
| CN111521266A (en) * | 2020-04-23 | 2020-08-11 | 佛山科学技术学院 | Spectrometer light path building device |
| CN113155786A (en) * | 2020-01-22 | 2021-07-23 | 纬创资通股份有限公司 | Detection device |
-
2018
- 2018-03-05 CN CN201820297839.XU patent/CN207816830U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108303407A (en) * | 2018-03-05 | 2018-07-20 | 哈尔滨工业大学（威海） | Become wavelength excitation and the adjustable Raman spectrometer of spectral region and calibration joining method |
| CN113155786A (en) * | 2020-01-22 | 2021-07-23 | 纬创资通股份有限公司 | Detection device |
| CN111521266A (en) * | 2020-04-23 | 2020-08-11 | 佛山科学技术学院 | Spectrometer light path building device |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180904 |
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| CF01 | Termination of patent right due to non-payment of annual fee |