A Two Components Approach for Long Range Remote Raman and Laser-Induced Breakdown (LIBS) Spectroscopy Using Low Laser Pulse Energy

Misra, A. K.; Acosta-Maeda, T. E.; Porter, Jonh N; Berlanga, G.; Muchow, Dalton; Sharma, Shiv K.; Chee, Brian J. S.

doi:10.1177/0003702818812144

Cited by 17 publications

(5 citation statements)

References 41 publications

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“…Because the two techniques use a similar instrumental architecture based on the same principal components (a laser, a spectrometer and a detector), several combined LIBS-Raman customized setups have been elaborated. Some setups were designed for analysis at the microscale [1,2] while other setups were developed for remote analysis [3][4][5][6][7][8] in particular for field measurements. Notably, most of these instruments were developed with the motivation of designing a compact LIBS-Raman instrument for future planetary exploration.…”

Section: Introductionmentioning

confidence: 99%

Pulsed laser-induced heating of mineral phases: Implications for laser-induced breakdown spectroscopy combined with Raman spectroscopy

Fau

Beyssac

Gauthier

et al. 2019

Spectrochimica Acta Part B: Atomic Spectroscopy

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Laser-Induced Breakdown Spectroscopy (LIBS) and Raman spectroscopy are complementary techniques providing respectively chemical and structural information on the sample target. These techniques are increasingly used together in Earth and Planetary sciences, and often together. LIBS is locally destructive for the target, and the laser-induced effects due to LIBS laser shots on the structure and on the Raman fingerprint of a set of geological samples relevant to Mars are here investigated by Raman spectroscopy and electron microscopy. Experiments show that the structure of samples with low optical absorption coefficients is preserved as well as the structural information carried by Raman spectra. By contrast, minerals with high optical absorption coefficient can be severely affected by LIBS laser shots with local amorphization, melting and/or phase transformation. Thermal modelling shows that the temperature can reach several thousands of degrees at the surface for such samples during a LIBS laser shot, but decreases rapidly with time and in space. In 2020, NASA Mars 2020 mission will send a rover equiped with a combined LIBS/Raman instrument for remote analysis (SuperCam) as well as fine-scale instruments for X-ray fluorescence (Planetary Instrument for X-Ray Lithochemistry-PIXL) and deep UV Raman spectroscopy (Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals-SHERLOC) for proximity science. We discuss the implications of our results for the operation of these instruments and show that (i) the SuperCam analytical footprint for Raman spectroscopy is many times larger than the LIBS crater, minimizing any effects and (ii) SHERLOC and PIXL analysis may be affected if they analyze within a LIBS crater created by SuperCam LIBS.

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Section: Introductionmentioning

confidence: 99%

Pulsed laser-induced heating of mineral phases: Implications for laser-induced breakdown spectroscopy combined with Raman spectroscopy

Fau

Beyssac

Gauthier

et al. 2019

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…The remote detection of chemicals using laser-based techniques is highly desirable due to increasing planetary exploration activities and anti-terrorism government programs for detecting hazardous chemicals [1][2][3][4]. Remote Raman systems, consisting of an active pulsed laser and a gated detector provide rapid and reliable detection and identification of chemicals, via gating the pulsed Raman echoes.…”

Section: Introductionmentioning

confidence: 99%

An Unmanned Vehicle-Based Remote Raman System for Real-Time Trace Detection and Identification

Ren,

Wang,

Xie

et al. 2023

Photonics

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Raman spectroscopy is a type of inelastic scattering that provides rich information about a substance based on the coupling of the energy levels of their vibrational and rotational modes with an incident light. It has been applied extensively in many fields. As there is an increasing need for the remote detection of chemicals in planetary exploration and anti-terrorism, it is urgent to develop a compact, easily transportable, and fully automated remote Raman detection system for trace detection and identification of information, with high-level confidence about the target’s composition and conformation in real-time and for real field scenarios. Here, we present an unmanned vehicle-based remote Raman system, which includes a 266 nm air-cooling passive Q-switched nanosecond pulsed laser of high-repetition frequency, a gated ICMOS, and an unmanned vehicle. This system provides good spectral signals from remote distances ranging from 3 m to 10 m for simulating realistic scenarios, such as aluminum plate, woodblock, paperboard, black cloth, and leaves, and even for detected amounts as low as 0.1 mg. Furthermore, a convolutional neural network (CNN)-based algorithm is implemented and packaged into the recognition software to achieve faster and more accurate detection and identification. This prototype offers a proof-of-concept for an unmanned vehicle with accurate remote substance detection in real-time, which can be helpful for remote detection and identification of hazardous gas, explosives, their precursors, and so forth.

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“…Based on the unique advantages of Raman spectroscopy, stand-off Raman spectroscopy was initially developed by Angel et al for the detection of K 4 [Fe(CN) 6 ], NaNO 2 , NaNO 3 , and CCl 4 at 17 m in 1992 . After 2000, time-gating techniques and telescopes have been applied in remote detection technology, which greatly enhanced the capability of remote Raman detection. − Until now, the reported farthest distance of remote Raman detection is 1752 m, which used a telescope of 203 mm diameter and a 532 nm pulsed laser for the explosive detection of nitrobenzene, potassium chlorate, and ammonium nitrate . Previously, Bobrovnikov et al reported the trace Raman detection of TNT with a concentration of 0.5 μg/cm 2 from a 10 m distance, which is the lowest concentration that has ever been reported for remote Raman detection of explosives .…”

Section: Introductionmentioning

confidence: 99%

Remote Raman Detection of Trace Explosives by Laser Beam Focusing and Plasmonic Spray Enhancement Methods

Hao

Zhao

Liu³

et al. 2022

Anal. Chem.

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Remote Raman spectroscopy is a technique that can detect and identify different target molecules through Raman vibrational modes from a remote distance. However, the current remote Raman technique is restricted by poor detection sensitivity, and it is still extremely challenging for trace explosive detection. Here, in order to achieve trace explosive detection from a remote distance, we innovatively propose two enhanced Raman spectroscopy methods by using a plasmonic spray and a laser beam focusing/ Raman signal collecting instrument. In brief, a facile convex lens can converge the laser beam and collect Raman scattering signals, and a plasmonic spray can be used for surface-enhanced Raman scattering. Under the combination of the above enhancement methods, we achieve remote Raman detection of a variety of trace explosives with a concentration of ∼1 μg/cm 2 from a distance of 30 m. These novel methods demonstrate a simple approach that significantly improves the capability of remote detection of trace chemicals for further applications.

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A Two Components Approach for Long Range Remote Raman and Laser-Induced Breakdown (LIBS) Spectroscopy Using Low Laser Pulse Energy

Cited by 17 publications

References 41 publications

Pulsed laser-induced heating of mineral phases: Implications for laser-induced breakdown spectroscopy combined with Raman spectroscopy

Pulsed laser-induced heating of mineral phases: Implications for laser-induced breakdown spectroscopy combined with Raman spectroscopy

An Unmanned Vehicle-Based Remote Raman System for Real-Time Trace Detection and Identification

Remote Raman Detection of Trace Explosives by Laser Beam Focusing and Plasmonic Spray Enhancement Methods

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