CN106645078A - LIBS (laser-induced breakdown spectroscopy)-Raman combined underwater in-situ detection device and detection method - Google Patents
LIBS (laser-induced breakdown spectroscopy)-Raman combined underwater in-situ detection device and detection method Download PDFInfo
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- CN106645078A CN106645078A CN201610833430.0A CN201610833430A CN106645078A CN 106645078 A CN106645078 A CN 106645078A CN 201610833430 A CN201610833430 A CN 201610833430A CN 106645078 A CN106645078 A CN 106645078A
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- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- 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
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Abstract
The invention discloses an LIBS (laser-induced breakdown spectroscopy)-Raman combined underwater in-situ detection device which comprises a working cabin body. According to the device, laser-induced breakdown spectroscopy and laser-Raman spectroscopy are integrated in the same sealed cabin, an LIBS focusing window and a Raman focusing window are arranged at the front end of the working cabin body, a single-pulse all-solid-state laser, an LIBS-Raman front light path, an LIBS spectrograph, a Raman spectrograph and an electronic control module are arranged in the working cabin body, the single-pulse all-solid-state laser serves as an excitation light source and is focused underwater by the LIBS-Raman front light path, corresponding signals are collected, the signals enter the LIBS spectrograph or the Raman spectrograph for detection afterwards, and the LIBS and the laser-Raman spectroscopy take the single-pulse all-solid-state laser serves as the excitation light source. By combining the laser-induced breakdown spectroscopy and the laser-Raman spectroscopy, metal cations and acid radical anions in seawater can be simultaneously detected, and a more comprehensive and effective detection means is provided for marine chemical in-situ detection.
Description
Technical field
The invention belongs to marine exploration field, is related to a kind of LIBS and laser Raman spectroscopy (LIBS-
Raman) united underwater in-situ detection device and detection method.
Background technology
With the continuous development of marine technology, the detection of marine resources increasingly receives publicity with the monitoring of marine environment,
The especially appearance of new carrying platform, to carrying out long-term, real-time, in-situ investigation chemical sensor demand is proposed.
During to marine resources detection and marine environmental monitoring, often program is more complicated for traditional technological means, it usually needs
Pretreatment sample, and sample pretreatment needs to take considerable time, therefore, it is difficult to realizing quick, online real-time in-situ measurement.Closely
The sensor based on spectral technique risen over year, such as LIBS, laser Raman spectroscopy, laser-induced breakdown light
Spectrum/laser Raman spectroscopy combined detection etc., can to water in various chemical compositions be analyzed measurement.Using laser-induced breakdown
Spectrum/laser Raman spectroscopy combined detection technology can be detected to metal cation under water and anion simultaneously, but generally
LIBS and laser Raman spectroscopy adopt different laser instruments, and equipment volume is big, in-convenience in use.
Therefore it is badly in need of providing a kind of detection device that can simultaneously detect multicomponent method and a set of miniaturization now.
The content of the invention
In order to solve problem of the prior art, the invention provides a kind of LIBS and laser Raman spectroscopy
(LIBS-Raman) united underwater in-situ detection device and detection method, by LIBS and laser Raman spectroscopy
Two kinds of detection means are integrated in a sealed compartment, can simultaneously complete the detection to metal cation under water and acid radical anion.
In order to achieve the above object, the present invention is adopted the following technical scheme that：
A kind of united underwater in-situ detection device of LIBS-Raman, including work chamber body, the device is by induced with laser
, together in same sealed compartment, work chamber body front end arranges LIBS and focuses on form, Raman for breakdown spectral and laser Raman spectroscopy collection
Focus on form, work chamber be originally provided with vivo the preposition light path of pulse all solid state laser, LIBS-Raman, LIBS spectrometers,
Raman spectrometers and electronic control module, the LIBS focuses on form and Raman focuses on form and the preposition light paths of LIBS-Raman
Corresponding, pulse all solid state laser is focused under water and completed as excitation source by the preposition light paths of LIBS-Raman
The collection of corresponding signal, afterwards signal detected into LIBS spectrometers or Raman spectrometers, LIBS
LIBS and laser Raman spectroscopy Raman adopt pulse all solid state laser as excitation source, the electronic control module
Electrically connect with pulse all solid state laser, the preposition light paths of LIBS-Raman, between LIBS spectrometers and Raman spectrometers.
The electronic control module includes supply module, control module and communication module, supply module, control module and logical
Electrically connect between news module.
The wavelength of the fundamental frequency light of pulse all solid state laser transmitting is 1064nm, the fundamental frequency light Jing after two frequency-doubling crystals
532nm laser is partially converted to for laser Raman spectroscopy detection.
The preposition light path of the LIBS-Raman includes two common frequency-doubling crystal harmonic beam splitters, and harmonic wave beam splitter is located at
The rear of two frequency-doubling crystals, the angle between harmonic wave beam splitter and two frequency-doubling crystals is 45 °.
Wherein, the preposition light paths of LIBS also include：
The logical dichroscope of the first long wave and the first convergence are sequentially passed through through the 1064nm laser of harmonic wave beam splitter and collect
Lens, the logical dichroscope of the first long wave is parallel with harmonic wave beam splitter, and laser is assembled through first and focuses on water with after collecting lens
In, the flashlight of generation is assembled through first and collecting lens reaches the logical dichroscope of the first long wave to reflex to broadband medium film anti-
Mirror is penetrated, the direction of the flashlight of broadband medium film speculum reflection is provided with the first fiber coupling lens, and the first fiber coupling is saturating
Mirror will enter LIBS signal transmission fibers after convergence of rays, LIBS spectrometers are imported afterwards, realize the detection of LIBS signals；
The preposition light paths of Raman also include：
Be provided with the direction that harmonic wave beam splitter reflects 532nm laser second long wave parallel with harmonic wave beam splitter logical two to
Look mirror, the direction of the logical dichroscope reflection laser of the second long wave is provided with the second convergence and collecting lens, and second assembles and collect
Lens focus on the light of the logical dichroscope reflection of the second long wave in water body to be measured, and the Rayleigh scattering of Raman signal and water body is by the
Two assemble and collecting lens collection, saturating then in turn through the logical dichroscope of the second long wave, high-pass filtering piece, the second fiber coupling
Mirror, is finally coupled to Raman signal transmission fibers, imports Raman spectrometers, realizes the detection of Raman signals.
The harmonic wave beam splitter is Nd:YAG harmonic wave beam splitters.
The spectral region of the LIBS spectrometers be 200～800nm, spectral resolution 0.7nm.The Raman spectrometers
Spectral region 0-4500cm-1, spectral resolution 10cm-1。
A kind of united underwater in-situ detection method of LIBS-Raman, comprises the following steps that：
The united underwater in-situ detection device switches of LIBS-Raman are opened, it is outer that pulse all solid state laser is selected
Triggering pattern, its normal work is opened and remains by control program by the pulse all solid state laser in sealed compartment,
Pulse all solid state laser launches trigger, the time delay t1 transmittings laser pulse after trigger is produced, by LIBS-
The preposition light paths of Raman focus under water and complete the collection of corresponding signal；
LIBS spectrometers adopt external trigger pattern, spectrometer are triggered by the trigger of laser instrument, in laser arteries and veins
Time from launch interval t2 is rushed, LIBS spectrometers are opened, the LIBS spectrometer collection times are t3, are closed afterwards, can obtain LIBS
Signal；Raman spectrometers adopt internal trigger pattern, and Raman spectrometers are opened by control program after laser instrument is opened, and can obtain
Obtain laser Raman spectroscopy signal.
The t1 is arranged between 0.8～4.4 μ s, preferably 4.4 μ s.
The t2 is arranged between the μ s of 100ns～1, due to plasma signal early stage resulting during LIBS detection
There is strong continuous background radiation, it is therefore desirable to the detector with delay function to avoid the interference of continuous background, so
T2 at regular intervals between needing between laser pulse and LIBS spectrometers, t2 should be arranged between the μ s of 100ns～1, but in order to
Signal to noise ratio is improved, time interval t2 is preferably provided near 200ns.
The t3 is arranged between 1.05ms～600s, preferably 1.05ms.
The 1064nm laser maximum single pulse energy of the pulse all solid state laser is 80mJ, and 532nm laser is maximum
Single pulse energy is 25.6mJ.
Beneficial effect
(1) present invention combines LIBS and laser Raman spectroscopy technology, and LIBS and Raman is combined
Detection device is integrated in a sealed compartment, substantially reduces the volume of device.
(2) present invention devise it is a set of based on same pulse laser as LIBS and the common excitation sources of Raman
Combined detection light path, the laser of the fundamental frequency 1064nm of outgoing is converted into 532nm and swashs through one piece of non-linear two frequency-doubling crystals part
Light, then the separation by laser of two wavelength is completed into exciting for LIBS and Raman signals into different light paths by harmonic wave beam splitter
And collect, improve the space availability ratio of device.
Description of the drawings
Fig. 1 is detection device structural representation of the present invention；
Fig. 2 is the preposition light channel structure schematic diagrames of LIBS-Raman；
Fig. 3 is detection device work schedule control figure of the present invention.
Wherein, LIBS focuses on form 1-1, and Raman focuses on form 1-2, and the preposition light paths 2 of LIBS-Raman, LIBS signals are passed
Lose 3, Raman of fibre signal transmission fibers 4, pulse all solid state laser 5, LIBS spectrometer 6-1, Raman spectrometer 6-2,
Electronic control module 7, work chamber body 8；First fiber coupling lens 9-1, first assembles and collecting lens 9-2, the second optical fiber
Coupled lens 9-3, second assembles and collecting lens 9-4, broadband medium film speculum 10, the logical dichroscope 11-1 of the first long wave,
The logical dichroscope 11-2 of second long wave, two frequency-doubling crystals 12, Nd:YAG harmonic waves beam splitter 13, high-pass filtering piece 14.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
Embodiment 1
The united underwater in-situ detection devices of a kind of LIBS-Raman as shown in Figure 1-2, including work chamber body 8, should
Device will simultaneously carry out LIBS detection and laser Raman spectroscopy detection, and work chamber body front end arranges LIBS and gathers
Burnt form 1-1, Raman are focused on and are provided with before pulse all solid state laser 5, LIBS-Raman in form 1-2, work chamber body 8
Put light path 2, LIBS spectrometers 6-1, Raman spectrometer 6-2 and electronic control module 7, the LIBS focus on form 1-1 and
Raman focusing form 1-2 are corresponding with the preposition light paths 2 of LIBS-Raman, and the pulse all solid state laser 5 is used as exciting light
Source, focuses under water and completes the collection of corresponding signal by the preposition light paths 2 of LIBS-Raman, and afterwards signal enters LIBS spectrum
Instrument 6-1 or Raman spectrometer 6-2 is detected, the LIBS (LIBS) and laser Raman spectroscopy (Raman)
Using pulse all solid state laser 5 as excitation source, the electronic control module 7 and pulse all solid state laser 5,
Electrically connect between LIBS spectrometer 6-1 and Raman spectrometer 6-2.
The electronic control module 7 include supply module, control module and communication module, supply module, control module and
Electrically connect between communication module.
Pulse all solid state laser 5 transmitting fundamental frequency light wavelength be 1064nm, the fundamental frequency light Jing after two frequency-doubling crystals 12
It is transformed into 532nm laser for laser Raman spectroscopy detection.1064nm is with 532nm mixed lights through Nd:YAG harmonic wave beam splitters
Afterwards, the laser reflection of 532nm, the transmission of 1064nm laser.
The preposition light path 2 of the LIBS-Raman includes the common harmonic beam splitter 13 of two frequency-doubling crystal 12, along light
Directions of rays, harmonic wave beam splitter 13 is located at the angle in the rear of two frequency-doubling crystals 12, harmonic wave beam splitter 13 and laser light incident direction
For 45 °；
Wherein, the preposition light paths of LIBS include：
The logical dichroscope of the first long wave and the first convergence are sequentially passed through through the 1064nm laser of harmonic wave beam splitter and collect
Lens, the logical dichroscope of the first long wave is parallel with harmonic wave beam splitter, and laser is assembled through first and focuses on water with after collecting lens
In, the flashlight of generation is assembled through first and collecting lens reaches the logical dichroscope of the first long wave to reflex to broadband medium film anti-
Mirror is penetrated, the direction of the flashlight of broadband medium film speculum reflection is provided with the first fiber coupling lens, and the first fiber coupling is saturating
Mirror will enter LIBS signal transmission fibers after convergence of rays, LIBS spectrometers are imported afterwards, realize the detection of LIBS signals；
The preposition light paths of Raman also include：
Be provided with the direction that harmonic wave beam splitter reflects 532nm laser second long wave parallel with harmonic wave beam splitter logical two to
Look mirror, the direction of the logical dichroscope reflection laser of the second long wave is provided with the second convergence and collecting lens, and second assembles and collect
Lens focus on the light of the logical dichroscope reflection of the second long wave in water body to be measured, and the Rayleigh scattering of Raman signal and water body is by the
Two assemble and collecting lens collection, saturating then in turn through the logical dichroscope of the second long wave, high-pass filtering piece, the second fiber coupling
Mirror, is finally coupled to Raman signal transmission fibers, imports Raman spectrometers, realizes the detection of Raman signals.
Harmonic wave beam splitter used in the embodiment of the present invention is Nd:YAG harmonic wave beam splitters.
The spectral region of the LIBS spectrometers 6-1 be 200～900nm, spectral resolution 0.7nm.
Spectral region 0-4500cm of the Raman spectrometers 6-2-1, spectral resolution 10cm-1。
A kind of united underwater in-situ detection method of LIBS-Raman, comprises the following steps that：
The united underwater in-situ detection device switches of LIBS-Raman are opened, it is outer that pulse all solid state laser is selected
Triggering pattern, its normal work is opened and remains by control program by the pulse all solid state laser in sealed compartment,
Pulse all solid state laser launches trigger, the time delay t1 transmittings laser pulse after trigger is produced, by LIBS-
The preposition light paths of Raman focus under water and complete the collection of corresponding signal；
LIBS spectrometers adopt external trigger pattern, spectrometer are triggered by the trigger of laser instrument, in laser arteries and veins
Time from launch interval t2 is rushed, LIBS spectrometers are opened, the LIBS spectrometer collection times are t3, are closed afterwards, can obtain LIBS
Signal；Raman spectrometers adopt internal trigger pattern, and Raman spectrometers are opened by control program after laser instrument is opened, and can obtain
Obtain laser Raman spectroscopy signal.
In the course of the work, due to need to simultaneously obtain LIBS and Raman signal spectrums, therefore the design parameter of spectra collection
Needs are strictly selected.Swash with transmitting after internal response, i.e. pulse all solid state laser 5 are opened because laser instrument is present
Need intervals t1, t1 to adjust between 0.8～4.4 μ s between light pulse, 4.4 μ s are selected in experimentation.
There is strong continuous background radiation in plasma signal early stage resulting during LIBS detection, it is therefore desirable to time delay
The detector of function is to avoid the interference of continuous background, so needing interval certain between laser pulse and LIBS spectrometer 6-1
Time t2, according to experiment results, t2 should be arranged between the μ s of 100ns～1, but in order to improve signal to noise ratio, time interval
T2 is preferably provided near 200ns.And for the detection of Raman signals, Raman spectrometer 6-2 take internal trigger pattern, swashing
Just Raman spectrometers 6-2 can be opened by control program after light pulse outgoing and gather Raman signals.
In the course of the work, impact of the setting of pulsed laser energy to signal is also very big, and its single pulse energy change can
It is adjusted to tens MJs from several MJs.For LIBS detection, selection optimum capacity is needed to be detected；For
Raman is detected, and on the premise of ensureing not damage device, the 532nm laser of big energy is chosen as far as possible.
The united underwater in-situ detection devices of a kind of LIBS-Raman that the present invention is provided provide three kinds of detection modes, respectively
For LIBS patterns, Raman patterns, LIBS-Raman combined detection patterns, can be selected according to specific requirement of experiment.
During LIBS detection is individually carried out, the running parameter of laser instrument and detecting light spectrum instrument is configured first,
Subsequently into the gatherer process of LIBS signals.It is external trigger pattern that laser instrument is selected, pulse all solid state laser with it is sharp
Time interval t1 of light pulse emission is set to 4.4 μ s, and LIBS detection spectrometer selects external trigger pattern, with the triggering of laser instrument
Signal equally as the trigger of LIBS, the time interval between laser pulse emission and LIBS detection spectrometer is detected
Time delay t2 is set to 200ns, acquired integrated time t3, completes a LIBS signals collecting.If desired, can visit in system LIBS
It is repeatedly cumulative to improve signal to noise ratio that loop detection is set in the control software of light-metering spectrometer 6-1.Collection closes laser instrument after terminating
With the control software of LIBS detection spectrometer 6-1, holding state is returned.
Individually carrying out in Raman detection process, Raman detecting light spectrum instrument 6-2 can be being opened after laser instrument is opened, adopting
Collection Raman signals.Collection closes laser instrument and Raman detecting light spectrum instrument 6-2 after terminating, and returns holding state.
During LIBS-Raman combined detections are carried out, laser instrument is set to into external trigger pattern, LIBS detection spectrum
Instrument is set to external trigger pattern, and Raman detecting light spectrums instrument is arranged without the need for external trigger.According to LIBS detection condition setting time interval
T1, t2, open laser instrument, and arrange LIBS detection spectrometer and Raman detecting light spectrums instrument while gathering spectrum.Can be according to concrete
Experiment demand arrange LIBS and Raman acquisition time and cycle-index, collection terminate after close laser instrument, LIBS detection light
Spectrometer and Raman detecting light spectrum instrument, return holding state.
Although above-mentioned be described to the specific embodiment of the present invention in conjunction with the embodiments, not to present invention protection
The restriction of scope, one of ordinary skill in the art should be understood that on the basis of technical scheme, those skilled in the art
The various modifications made by creative work need not be paid or deformation are still within protection scope of the present invention.
Claims (10)
1. a kind of united underwater in-situ detection devices of LIBS-Raman, is characterized in that, including work chamber body, and the device will swash
, together in same sealed compartment, work chamber body front end arranges LIBS focusing and regards for photoinduction breakdown spectral and laser Raman spectroscopy collection
Window, Raman focus on form, and work chamber is originally provided with vivo the preposition light path of pulse all solid state laser, LIBS-Raman, LIBS light
Spectrometer, Raman spectrometers and electronic control module, the LIBS focuses on form and Raman is focused on before form and LIBS-Raman
Put light path corresponding, the pulse all solid state laser is focused on as excitation source by the preposition light paths of LIBS-Raman
Under water and the collection of corresponding signal is completed, afterwards signal is detected into LIBS spectrometers or Raman spectrometers, the laser
Induced breakdown spectroscopy LIBS and laser Raman spectroscopy Raman adopt pulse all solid state laser as excitation source, described
Electronic control module and pulse all solid state laser, the preposition light paths of LIBS-Raman, LIBS spectrometers and Raman spectrometers it
Between electrically connect.
2. a kind of united underwater in-situ detection devices of LIBS-Raman according to claim 1, is characterized in that, the electricity
Sub- control module includes supply module, control module and communication module, is electrically connected between supply module, control module and communication module
Connect.
3. a kind of united underwater in-situ detection devices of LIBS-Raman according to claim 1, is characterized in that, the list
The wavelength of the fundamental frequency light of pulse all solid state laser transmitting is 1064nm, and energy is 80mJ to the maximum, the fundamental frequency Jing after two frequency-doubling crystals
Light is transformed into 532nm laser for laser Raman spectroscopy detection.
4. a kind of united underwater in-situ detection devices of LIBS-Raman according to claim 3, is characterized in that, described
The preposition light paths of LIBS-Raman include two common frequency-doubling crystal harmonic beam splitters, along the directions of rays of light, harmonic wave beam splitting
Mirror is located at the rear of two frequency-doubling crystals, and the angle between harmonic wave beam splitter and incident ray is 45 °；
Wherein, the preposition light paths of LIBS also include：
The logical dichroscope of the first long wave and the first convergence and collecting lens are sequentially passed through through the 1064nm laser of harmonic wave beam splitter,
The logical dichroscope of first long wave is parallel with harmonic wave beam splitter, and laser is assembled through first and focused in water after collecting lens, is produced
Raw flashlight is assembled through first and collecting lens reaches the logical dichroscope of the first long wave and reflexes to broadband medium film speculum,
The direction of the flashlight of broadband medium film speculum reflection is provided with the first fiber coupling lens, and the first fiber coupling lens are by light
Line enters LIBS signal transmission fibers after assembling, and LIBS spectrometers are imported afterwards, realizes the detection of LIBS signals；
The preposition light paths of Raman also include：
The logical dichroic of second long wave parallel with harmonic wave beam splitter is provided with the direction that harmonic wave beam splitter reflects 532nm laser
Mirror, the direction of the logical dichroscope reflection laser of the second long wave is provided with the second convergence and collecting lens, and second assembles and collect saturating
Mirror focuses on the light of the logical dichroscope reflection of the second long wave in water body to be measured, and the Rayleigh scattering of Raman signal and water body is by second
Assemble and collecting lens is collected, it is saturating then in turn through the logical dichroscope of the second long wave, high-pass filtering piece, the second fiber coupling
Mirror, is finally coupled to Raman signal transmission fibers, imports Raman spectrometers, realizes the detection of Raman signals.
5. a kind of united underwater in-situ detection devices of LIBS-Raman according to claim 4, is characterized in that, described humorous
Ripple beam splitter is Nd:YAG harmonic wave beam splitters.
6. a kind of united underwater in-situ detection devices of LIBS-Raman according to claim 1, is characterized in that, described
The spectral region of LIBS spectrometers be 200～800nm, spectral resolution 0.7nm；
Spectral region 0-4500cm of the Raman spectrometers-1, spectral resolution 10cm-1。
7. a kind of united underwater in-situ detection methods of LIBS-Raman, is characterized in that, comprise the following steps that：
Using the united underwater in-situ detection devices of a kind of LIBS-Raman described in any one of claim 1-5, open a kind of
The united underwater in-situ detection device switches of LIBS-Raman, it is external trigger pattern that pulse all solid state laser is selected, and is led to
Cross control program to open the pulse all solid state laser in sealed compartment and remain its normal work, pulse is all solid state
Laser instrument launches trigger, the time delay t1 transmittings laser pulse after trigger is produced, by the preposition light paths of LIBS-Raman
Focus under water and complete the collection of corresponding signal；
LIBS spectrometers adopt external trigger pattern, and spectrometer is triggered by the trigger of laser instrument, send out in laser pulse
Rear time interval t2 is penetrated, LIBS spectrometers are opened, the LIBS spectrometer collection times are t3, are closed afterwards, can obtain LIBS signals；
Raman spectrometers adopt internal trigger pattern, and Raman spectrometers are opened by control program after laser instrument is opened, and can obtain sharp
Light raman spectral signal.
8. a kind of united underwater in-situ detection methods of LIBS-Raman according to claim 7, is characterized in that, the t1
Arrange between 0.8～4.4 μ s.
9. a kind of united underwater in-situ detection methods of LIBS-Raman according to claim 7, is characterized in that, the t2
Arrange between the μ s of 100ns～1.
10. a kind of united underwater in-situ detection methods of LIBS-Raman according to claim 7, is characterized in that, described
T3 is arranged between 1.05ms～600s.
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| CN107703116A (en) * | 2017-10-18 | 2018-02-16 | 中国科学院深海科学与工程研究所 | Underwater laser Raman spectrum instrument |
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| CN109358034A (en) * | 2018-10-29 | 2019-02-19 | 中国科学院上海技术物理研究所 | Spacefarer's urine detection method based on liquid core waveguide combined spectral |
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| CN111175287A (en) * | 2020-01-13 | 2020-05-19 | 中国海洋大学 | Detection device and detection method for self-carried sample carrying submersible |
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| CN115980006A (en) * | 2023-01-04 | 2023-04-18 | 中北大学 | Long-pulse LIBS-Raman-LIF multispectral combined in-situ detection system and detection method thereof |
| CN117664945A (en) * | 2023-10-25 | 2024-03-08 | 北京科技大学 | Portable combined spectrum detection system |
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| CN107703116A (en) * | 2017-10-18 | 2018-02-16 | 中国科学院深海科学与工程研究所 | Underwater laser Raman spectrum instrument |
| CN108088835A (en) * | 2018-02-06 | 2018-05-29 | 清华大学深圳研究生院 | A kind of underwater detecting system based on laser induced breakdown spectroscopy |
| CN110196246A (en) * | 2018-02-26 | 2019-09-03 | 成都艾立本科技有限公司 | A kind of laser-induced breakdown-Raman spectrum combined system |
| CN110196246B (en) * | 2018-02-26 | 2022-02-22 | 成都艾立本科技有限公司 | Laser-induced breakdown-Raman spectrum combined system |
| CN109358034A (en) * | 2018-10-29 | 2019-02-19 | 中国科学院上海技术物理研究所 | Spacefarer's urine detection method based on liquid core waveguide combined spectral |
| CN111175287A (en) * | 2020-01-13 | 2020-05-19 | 中国海洋大学 | Detection device and detection method for self-carried sample carrying submersible |
| CN112268891A (en) * | 2020-10-14 | 2021-01-26 | 山东大学 | LIBS-Raman immersion type brine element detector |
| CN113916787A (en) * | 2021-10-19 | 2022-01-11 | 西安电子科技大学 | Multi-mode laser-induced breakdown spectroscopy device |
| CN115980006A (en) * | 2023-01-04 | 2023-04-18 | 中北大学 | Long-pulse LIBS-Raman-LIF multispectral combined in-situ detection system and detection method thereof |
| CN115980006B (en) * | 2023-01-04 | 2024-01-09 | 中北大学 | Long-pulse LIBS-Raman-LIF multispectral combined in-situ detection system and detection method thereof |
| CN117664945A (en) * | 2023-10-25 | 2024-03-08 | 北京科技大学 | Portable combined spectrum detection system |
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