CN106018363A - Wavelength correction control system for dye laser - Google Patents
Wavelength correction control system for dye laser Download PDFInfo
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- CN106018363A CN106018363A CN201610331137.4A CN201610331137A CN106018363A CN 106018363 A CN106018363 A CN 106018363A CN 201610331137 A CN201610331137 A CN 201610331137A CN 106018363 A CN106018363 A CN 106018363A
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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
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
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Abstract
The invention provides a wavelength correction control system for a dye laser. The system comprises the dye laser, a sample pool, a signal detection unit and a signal processing unit, wherein laser emitted by the dye laser is subjected to frequency multiplication by a beta-Ba2O4 crystal and then output, the laser output after frequency multiplication is split by a beam splitter and then enters the sample pool through an entrance window; the signal detection unit comprises a fluorescence collection lens of a narrowband filter and is used for filtering interference and focusing a fluorescence signal excited by laser, the fluorescence signal is acquired by a photomultiplier, and a laser energy signal is monitored by a photodiode. A signal acquisition card of the signal processing unit receives the signals acquired by the photomultiplier and the photodiode and transmits the signals to a computer, and the computer controls gratings of the dye laser and parameters of the beta-Ba2O4 crystal through a USB, so that the laser output wavelength is regulated. With the adoption of the wavelength correction control system, the wavelength of the dye laser on a to-be-detected substance excitation line can be accurately located, and the location precision is as high as 0.1 pm.
Description
Technical field
The present invention relates to the Atmospheric Trace gas that selective absorbing in environmental monitoring is stronger, line-width is narrow
Body monitoring technical field.It is specifically related to a kind of wavelength Correction and Control system for dye laser.
Background technology
Along with rapid development of economy, environmental problem grows in intensity, and especially atmosphere polluting problem is increasingly subject to
Attention to people.In air, composition and the concentration of pollution gas are asking of control atmosphere pollution primary concern
Topic.And, concentration strong for expression activitiy in air there is also many asking at present than relatively low trace Fe
Topic.Especially when laser Induced Fluorescence Technology detection testing concentration, laser excitation determinand is allowed to produce glimmering
Light, obtains testing concentration by the intensity of detection fluorescence；Most important in the method it is to ensure that laser wave
The long transition Absorption Line that shakes with determinand produces resonance absorption, and keeps absorptance in maximum position, ability
Record testing concentration more accurately.General reasonable dye laser has the temperature drift of 2pm/ DEG C, when
When determinand line-width is narrow, in order to ensure the accuracy of monitoring result, the length of dye laser wavelength
Phase is stably a problem that have to solve.And the stability of laser wavelength itself does not often reach monitoring
Required stability.Therefore, the stability of wavelength of dye laser how is improved for art technology
It it is urgent problem for personnel.
Summary of the invention
It is an object of the invention to provide a kind of wavelength Correction and Control system for dye laser, this control system
System can improve the stability of dye laser wavelength, and the optical maser wavelength making dye laser be sent is the most steady
Fixed, and then improve the monitoring accuracy of trace gas concentration in air.
For achieving the above object, the invention provides a kind of wavelength Correction and Control system for dye laser
System, including:
Sample cell, described sample cell includes the air inlet being located at described sample cell top, is located at described sample cell
The vacuum orifice of bottom, is symmetrically set in entrance window and the exit window of described sample cell both sides, is vertical at described
The signals collecting mouth of sample cell another side, described vacuum orifice connects vacuum pump, and described vacuum orifice
Place is provided with piezometer；
Dye laser, is used for launching laser, and the transmitting terminal of described dye laser connects β phase metaboric acid
Crystal of barium, is provided with beam splitter between described β phase barium metaborate crystal and described entrance window, described beam splitter is used
In being split through the laser of described β phase barium metaborate crystal；
Acquisition of signal unit, described acquisition of signal unit includes the phosphor collection being connected to described signals collecting mouth
Camera lens, the photomultiplier tube being connected with described phosphor collection camera lens, it is located in described exit window exit direction
Photodiode；Described dye laser launch laser after described β phase barium metaborate crystal double frequency,
Through described beam splitter beam splitting, the laser after beam splitting enters in described sample cell by described entrance window, described sample
Material in product pond launches fluorescence through laser excitation, and described photomultiplier tube is adopted by described signals collecting mouth
Collection signal, described photodiode gathers the signal of described exit window injection；
Signal processing unit, described signal processing unit includes data acquisition card, delay time generator and computer；
Described data acquisition card is connected with described photomultiplier tube and described photodiode respectively, is used for receiving institute
State the signal that photomultiplier tube and described photodiode gather, described delay time generator respectively with described dyestuff
Laser instrument is connected with described data acquisition card, is used for triggering described dye laser and described photoelectricity two pole
Pipe；Described computer is connected between described data acquisition card and described dye laser, is used for processing process
The signal of described data acquisition card.
Optionally, described sample cell also includes air stream axle, the laser axis being mutually perpendicular to two-by-two and intersecting at a point
And detection axis, described air stream axle is to connect described air inlet and the axial passageway of described vacuum orifice, described sharp
Optical axis is to connect described entrance window and the axial passageway of described exit window, and described detection axis is described signals collecting
The axial passageway of mouth bearing of trend.
Optionally, the photocathode of described photomultiplier tube is located at the focal plane of described phosphor collection camera lens.
Optionally, described entrance window and described exit window are provided with the window being coated with anti-reflection film, window described in two with
The axis of symmetry of described entrance window and described exit window is Brewster's angle.
Optionally, described photomultiplier tube is for gathering the fluorescence signal of the generation in described sample cell, described
Photodiode is for gathering the laser energy signal after described sample cell.
Optionally, described data acquisition card uses dual channel high speed capture card, and one of them passage is used for gathering
The signal that described photomultiplier tube gathers, another passage is for gathering the letter that described photodiode gathers
Number.
Optionally, described computer utilizes the signal that data acquisition card described in trapezoidal rule Integral Processing gathers.
Another object of the present invention is to provide the wavelength control method for correcting of a kind of dye laser, utilize institute
The wavelength Correction and Control system for dye laser stated carries out wavelength Correction and Control, and control method includes:
The laser setting dye laser transmitting is exporting more than sample material Absorption Line 4-8pm position；
Call length scanning function the wavelength of Output of laser is scanned；
Obtain the fluorescence signal that photomultiplier tube gathers, obtain the laser energy signal that photodiode gathers；
Utilize fluorescence signal described in trapezoidal rule Integral Processing, it is thus achieved that normalized fluorescence signal；
Relatively described normalized fluorescence signal, it is thus achieved that fluorescence signal intensity values I；
Again scan the wavelength of Output of laser, obtain fluorescence signal intensity；
Relatively described fluorescence signal intensity and described fluorescence signal intensity values I, it is thus achieved that comparative result；
When described comparative result represents: when described fluorescence signal intensity is 0.95I, described again scan output
The laser outgoing position of laser is determinand excitation line position；
Judge that whether described fluorescence signal intensity is less than threshold value 0.9I, it is thus achieved that judged result；
When described judged result represents: described fluorescence signal intensity is less than threshold value 0.9I, rescan output and swash
The wavelength of light, obtains determinand excitation line position.
Optionally, when described judged result represents: described fluorescence signal intensity is more than threshold value 0.9I, again sentences
Whether disconnected described fluorescence signal intensity is less than threshold value 0.9I, it is thus achieved that judged result, until described fluorescence signal is strong
Degree is less than threshold value 0.9I.
Optionally, the every special time of wavelength of described scanning Output of laser is carried out once.
The specific embodiment provided according to the present invention, the invention discloses techniques below effect: the present invention provides
The wavelength Correction and Control system for dye laser, including dye laser, sample cell, acquisition of signal
Unit, signal processing unit.Dye laser is through β phase barium metaborate crystal (β-BaB2O4 crystal, BBO
Crystal) export again after frequency multiplication, after frequency multiplication, the laser of output enters sample by entrance window after beam splitter beam splitting
Product pond；Acquisition of signal unit comprises the phosphor collection camera lens of narrow band filter slice, filtering interfering, and by laser
The fluorescence signal excited focuses on, and gathers this fluorescence signal, photodiode monitor laser by photomultiplier tube
Energy signal.In signal processing unit, data acquisition card receives photomultiplier tube and the letter of photodiode collection
Number, and it being sent to computer, computer controls grating and the β phase barium metaborate of dye laser by USB
The parameter of crystal, to adjust laser output wavelength.Utilize the wavelength for dye laser that the present invention provides
Correction and Control system is capable of dye laser wavelength being accurately positioned in test substance excitation line position, fixed
Position precision is up to 0.1pm；The present invention uses computer Automatic Control, it is not necessary to manual operation, it is achieved that ripple
The long intellectuality revised；Using the Absorption Line of test substance itself as reference, with strong points, for different traces
The measurement of quantity of material, only need to adjust sample in sample cell, have transplantable ability.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement
In example, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only
Some embodiments of the present invention, for those of ordinary skill in the art, are not paying creative work
On the premise of, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
The wavelength Correction and Control system structure for dye laser that Fig. 1 provides for the embodiment of the present invention is shown
It is intended to；
The flow chart of the wavelength control method for correcting of the dye laser that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, be fully described by, it is clear that described embodiment be only a part of embodiment of the present invention rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
The every other embodiment obtained under property work premise, broadly falls into the scope of protection of the invention.
The invention provides a kind of wavelength Correction and Control system for dye laser, including:
Sample cell 1, sample cell 1 includes the air inlet 11 being located at sample cell 1 top, is located at sample cell 1 end
The vacuum orifice 12 in portion, is symmetrically set in entrance window 13 and the exit window 14 of sample cell 1 both sides, is vertical at
The signals collecting mouth 15 of sample cell 1 another side, vacuum orifice 12 connects vacuum pump (not shown),
And at vacuum orifice 12, it is provided with piezometer 16.Sample cell 1 in present embodiment is 140*100*90mm
Aircraft aluminum material cavity, inner and outer shell all need to carry out anodization blackening process in case reduce veiling glare,
Improve accuracy of detection and the accuracy of detection of laser energy signal of fluorescence signal.Entrance window 13 and exit window 14
Window use the quartz window sheet being coated with anti-reflection film to seal, two windows and entrance window 13 and exit window 14 right
Claiming axle is Brewster's angle, is so to reduce reflection light.This sample cell also include being mutually perpendicular to two-by-two and
Air stream axle, laser axis and the detection axis intersected at a point, air stream axle is for connecting air inlet 11 and vacuum orifice
The axial passageway of 12, laser axis is to connect entrance window 13 and the axial passageway of exit window 14, and detection axis is
The axial passageway of signals collecting mouth 15 bearing of trend.Three axles are orthogonal, and to be designed to reduce laser spuious
Exciting and detecting of the interference of light, beneficially fluorescence, improves detection accuracy.By air inlet above air stream axle
11 ventilations, lower section is connect vacuum pump by vacuum orifice 12, and monitors sample by film vacuum piezometer 16
Pond internal gas pressure, employing oil-free scroll vacuum pump is to sample cell evacuation, so that sample cell internal gas pressure and monitoring system
The air pressure of system keeps consistent.
Dye laser 2, is used for launching laser, and the transmitting terminal of dye laser 2 connects β phase metaboric acid
Crystal of barium 3, is provided with beam splitter 4 between β phase barium metaborate crystal 3 (bbo crystal) and entrance window 13,
Beam splitter 4 is for being split through the laser of β phase barium metaborate crystal 3；Dyestuff in present embodiment
Laser instrument 2 is the dye laser of YAG laser pumping, and its wavelength with temperature is changed to 2pm/ DEG C, warp
Wavelength regulation precision after bbo crystal two frequency multiplication is 0.1pm.Swashing of concrete beam splitter 4 beam splitting about 8%
Light enters sample cell 1.According to the needs arranging position relationship of dye laser 2 with sample cell 1, also may be used
To enter sample cell by turning mirror (not shown) after being transferred by the laser after beam splitter 4 beam splitting
1, to facilitate sample cell 1 and the placement of dye laser 2.
Acquisition of signal unit 5, acquisition of signal unit 5 includes the phosphor collection being connected to signals collecting mouth 15
Camera lens 51, the photomultiplier tube 52 being connected with phosphor collection camera lens 51, it is located at exit window 14 outgoing side
Photodiode 53 upwards；Dye laser 2 launch laser after β phase barium metaborate crystal two frequency multiplication,
Through beam splitter 4 beam splitting, the laser after beam splitting enters in sample cell 1, in sample cell 1 by entrance window 13
Material launch fluorescence through laser excitation, photomultiplier tube 52 gathers signal by signals collecting mouth 15,
Photodiode 53 gathers the signal of exit window 14 injection.
Signal processing unit 6, signal processing unit 6 includes data acquisition card 61, delay time generator 62 and
Computer 63；Data acquisition card 61 is connected with photomultiplier tube 52 and photodiode 53 respectively, uses
In receiving the signal that photomultiplier tube 52 and photodiode 53 gather, delay time generator 62 respectively with dye
Material laser instrument 2 is connected with data acquisition card 61, is used for triggering dye laser 2 and photodiode 53；
Computer 63 is connected between data acquisition card 61 and dye laser 2, for processing through signals collecting
The signal of card 61, and control dye laser 2 and launch the laser of certain wavelength.
Dye laser 2 in present embodiment is through β phase barium metaborate crystal 3 (β-BaB2O4 crystal, BBO
Crystal) export again after frequency multiplication, after frequency multiplication the laser of output after beam splitter 4 beam splitting by entrance window 13
Enter sample cell 1；Acquisition of signal unit 5 comprises the phosphor collection camera lens 51 of narrow band filter slice, filters dry
Disturb, and the fluorescence signal of laser excitation is focused on, gather this fluorescence signal, light by photomultiplier tube 52
Electric diode 53 monitors laser energy signal.In signal processing unit 6, data acquisition card 61 receives photoelectricity times
Increasing pipe 52 and the signal of photodiode 53 collection, and be sent to computer 63, computer 63 passes through
USB controls grating and the parameter of β phase barium metaborate crystal 3 of dye laser 1, to adjust laser output
Wavelength.The wavelength Correction and Control system for dye laser utilizing the present invention to provide is capable of dyestuff and swashs
Light device wavelength being accurately positioned in test substance excitation line position, positioning precision is up to 0.1pm；The present invention adopts
Use computer Automatic Control, it is not necessary to manual operation, it is achieved that the intellectuality of wavelength correction；With test substance
The Absorption Line of itself is as reference, with strong points, for the measurement of different trace materialss, only need to adjust sample
Sample in pond, has transplantable ability.
As the optional embodiment of one, the photocathode of photomultiplier tube 52 is located at phosphor collection camera lens
At the focal plane of 51, to improve the precision obtaining fluorescence signal.Photomultiplier tube 52 is used for gathering in sample cell
The fluorescence signal of generation, photodiode 53 is for gathering the laser energy signal after sample cell.
Data acquisition card 61 uses dual channel high speed capture card, and one of them passage is used for gathering photomultiplier tube 52
The signal gathered, another passage, for gathering the signal that photodiode 53 gathers, utilizes the dual pathways high
Two kinds of signals are gathered by speed capture card respectively, it is ensured that signal is noiseless and the high efficiency of collection.
As the optional embodiment of one, computer 63 utilizes trapezoidal rule Integral Processing data acquisition card
61 signals gathered, certainly can be to use Simpson's integration and Bode Integral Processing mode, this embodiment party
Middle selection trapezoidal rule integration processing method makes calculating easier, and then can alleviate sequential operation burden, carries
The efficiency of high system detection fluorescence.
In the above-described embodiment, dye laser 2 is Gao Zhongying pulsed dye laser, time delay occur
Device 62 is unified triggers dye laser 2 and photodiode 53, with guarantee to capture in time fluorescence signal and
Laser energy signal.
In the above-described embodiment, it should be ensured that the air-tightness of control system is good, it is to avoid air trace gas pair
The interference of system, especially for the determinand that reactivity is stronger.
Another object of the present invention is to provide the wavelength control method for correcting of a kind of dye laser, utilize institute
The wavelength Correction and Control system for dye laser stated carries out wavelength Correction and Control, and control method includes:
Step 201: set the laser of dye laser transmitting more than sample material Absorption Line 4-8pm position
Output；
Step 202: call length scanning function and the wavelength of Output of laser is scanned；
Step 203: obtain the fluorescence signal that photomultiplier tube gathers, obtains the laser that photodiode gathers
Energy signal；
Step 204: utilize trapezoidal rule Integral Processing fluorescence signal, it is thus achieved that normalized fluorescence signal；
Step 205: relatively normalized fluorescence signal, it is thus achieved that fluorescence signal intensity values I；
Step 206: again scan the wavelength of Output of laser, obtains fluorescence signal intensity；
Step 207: compare fluorescence signal intensity and fluorescence signal intensity values I, it is thus achieved that comparative result；
When comparative result represents: when fluorescence signal intensity is 0.95I, (setting threshold value 0.95I is steady because of each system
Qualitatively difference and different), the laser outgoing position again scanning Output of laser is determinand excitation line
Position；
Step 208: whether (concrete threshold value need to be according to system less than threshold value 0.9I to judge fluorescence signal intensity
Concrete condition sets), it is thus achieved that judged result；
When judged result represents: fluorescence signal intensity is less than threshold value 0.9I, rescans the wavelength of Output of laser,
Obtain determinand excitation line position.
As the optional embodiment of one, in the above-mentioned methods, when judged result represents: fluorescence signal is strong
Whether degree, more than threshold value 0.9I, rejudges fluorescence signal intensity less than threshold value 0.9I, it is thus achieved that judged result,
Until fluorescence signal intensity is less than threshold value 0.9I.
As the optional embodiment of one, the every special time of wavelength of scanning Output of laser is carried out once, this
In embodiment, special time is 30 minutes, and so, the length scanning of set time reduces high concentration
The impact that wavelength is positioned by test specimen fluctuation of concentration, improves the precision of determinand excitation line location.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is
With the difference of other embodiments, between each embodiment, identical similar portion sees mutually.
Principle and the embodiment of the present invention are set forth by specific case used herein, above enforcement
The explanation of example is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for this area
Those skilled in the art, according to the thought of the present invention, the most all can change
Part.In sum, this specification content should not be construed as limitation of the present invention.
Claims (9)
1. the wavelength Correction and Control system for dye laser, it is characterised in that including:
Sample cell, described sample cell includes the air inlet being located at described sample cell top, is located at described sample cell
The vacuum orifice of bottom, is symmetrically set in entrance window and the exit window of described sample cell both sides, is vertical at described
The signals collecting mouth of sample cell another side, described vacuum orifice connects vacuum pump, and described vacuum orifice
Place is provided with piezometer；
Dye laser, is used for launching laser, and the transmitting terminal of described dye laser connects β phase metaboric acid
Crystal of barium, is provided with beam splitter between described β phase barium metaborate crystal and described entrance window, described beam splitter is used
In being split through the laser of described β phase barium metaborate crystal；
Acquisition of signal unit, described acquisition of signal unit includes the phosphor collection being connected to described signals collecting mouth
Camera lens, the photomultiplier tube being connected with described phosphor collection camera lens, it is located in described exit window exit direction
Photodiode；Described dye laser launch laser after described β phase barium metaborate crystal double frequency,
Through described beam splitter beam splitting, the laser after beam splitting enters in described sample cell by described entrance window, described sample
Material in product pond launches fluorescence through laser excitation, and described photomultiplier tube is adopted by described signals collecting mouth
Collection signal, described photodiode gathers the signal of described exit window injection；
Signal processing unit, described signal processing unit includes data acquisition card, delay time generator and computer；
Described data acquisition card is connected with described photomultiplier tube and described photodiode respectively, is used for receiving institute
State the signal that photomultiplier tube and described photodiode gather, described delay time generator respectively with described dyestuff
Laser instrument is connected with described data acquisition card, is used for triggering described dye laser and described photoelectricity two pole
Pipe；Described computer is connected between described data acquisition card and described dye laser, is used for processing process
The signal of described data acquisition card.
Wavelength Correction and Control system for dye laser the most according to claim 1, its feature
Being, described sample cell also includes air stream axle, laser axis and the detection being mutually perpendicular to two-by-two and intersecting at a point
Axle, described air stream axle is to connect described air inlet and the axial passageway of described vacuum orifice, and described laser axis is
Connecting described entrance window and the axial passageway of described exit window, described detection axis is that described signals collecting mouth extends
The axial passageway in direction.
Wavelength Correction and Control system for dye laser the most according to claim 1, its feature
Being, the photocathode of described photomultiplier tube is located at the focal plane of described phosphor collection camera lens.
Wavelength Correction and Control system for dye laser the most according to claim 1, its feature
Being, described entrance window and described exit window are provided with the window being coated with anti-reflection film, window described in two with described enter
The axis of symmetry penetrating window and described exit window is Brewster's angle.
Wavelength Correction and Control system for dye laser the most according to claim 1, its feature
Being, described photomultiplier tube is for gathering the fluorescence signal produced in described sample cell, described photoelectricity two pole
Pipe is for gathering the laser energy signal after described sample cell.
The most according to claim 1 or 5 for the wavelength Correction and Control system of dye laser, its
Being characterised by, described data acquisition card uses dual channel high speed capture card, and one of them passage is used for gathering institute
Stating the signal that photomultiplier tube gathers, another passage is for gathering the signal that described photodiode gathers.
7. the wavelength control method for correcting of a dye laser, it is characterised in that utilize such as claim
The wavelength Correction and Control system for dye laser described in 1 carries out wavelength Correction and Control, control method bag
Include:
The laser setting dye laser transmitting is exporting more than sample material Absorption Line 4-8pm position；
Call length scanning function the wavelength of Output of laser is scanned；
Obtain the fluorescence signal that photomultiplier tube gathers, obtain the laser energy signal that photodiode gathers；
Utilize fluorescence signal described in trapezoidal rule Integral Processing, it is thus achieved that normalized fluorescence signal；
Relatively described normalized fluorescence signal, it is thus achieved that fluorescence signal intensity values I；
Again scan the wavelength of Output of laser, obtain fluorescence signal intensity；
Relatively described fluorescence signal intensity and described fluorescence signal intensity values I, it is thus achieved that comparative result；
When described comparative result represents: when described fluorescence signal intensity is 0.95I, described again scan output
The laser outgoing position of laser is determinand excitation line position；
Judge that whether described fluorescence signal intensity is less than threshold value 0.9I, it is thus achieved that judged result；
When described judged result represents: described fluorescence signal intensity is less than threshold value 0.9I, rescan output and swash
The wavelength of light, obtains determinand excitation line position.
The wavelength control method for correcting of dye laser the most according to claim 7, it is characterised in that
When described judged result represents: described fluorescence signal intensity is more than threshold value 0.9I, rejudge described fluorescence letter
Whether number intensity is less than threshold value 0.9I, it is thus achieved that judged result, until described fluorescence signal intensity is less than threshold value
0.9I。
The wavelength control method for correcting of dye laser the most according to claim 7, it is characterised in that
The every special time of wavelength of described scanning Output of laser is carried out once.
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| CN108303184A (en) * | 2018-01-23 | 2018-07-20 | 哈尔滨工业大学 | A kind of device and method of real-time monitoring tunable laser Output of laser wavelength and energy |
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| CN108303184A (en) * | 2018-01-23 | 2018-07-20 | 哈尔滨工业大学 | A kind of device and method of real-time monitoring tunable laser Output of laser wavelength and energy |
| CN108627489A (en) * | 2018-05-24 | 2018-10-09 | 大连民族大学 | A kind of 128 channel array capillary electrophoresis |
| CN108627489B (en) * | 2018-05-24 | 2021-04-13 | 大连民族大学 | 128-channel array capillary electrophoresis apparatus |
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