Relevant bibliographies by topics / Raman Laser Spectrometer (RLS)

Academic literature on the topic 'Raman Laser Spectrometer (RLS)'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Raman Laser Spectrometer (RLS)"

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Lopez‐Reyes, Guillermo, Marco Veneranda, Jose Antonio Manrique, Álvaro González Martín, Andoni Moral, Carlos Perez‐Canora, Jose Antonio Rodríguez Prieto, et al. "The Raman laser spectrometer ExoMars simulator (RLS Sim): A heavy‐duty Raman tool for ground testing on ExoMars." Journal of Raman Spectroscopy 53, no. 3 (November 21, 2021): 382–95. http://dx.doi.org/10.1002/jrs.6281.

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Lopez‐Reyes, Guillermo, Cedric Pilorget, Andoni G. Moral, Jose Antonio Manrique, Aurelio Sanz, Alicia Berrocal, Marco Veneranda, et al. "Raman Laser Spectrometer (RLS) calibration target design to allow onboard combined science between the RLS and MicrOmega instruments on the ExoMars rover." Journal of Raman Spectroscopy 51, no. 9 (January 23, 2020): 1718–30. http://dx.doi.org/10.1002/jrs.5832.

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Ramos, Gonzalo, Miguel Sanz‐Palomino, Andoni G. Moral, Carlos Pérez, Tomás Belenguer, Rosario Canchal, José A. R. Prieto, et al. "RLS iOH: ExoMars Raman laser spectrometer optical head bread board to flight model design and performance evolutions." Journal of Raman Spectroscopy 51, no. 9 (November 26, 2019): 1761–70. http://dx.doi.org/10.1002/jrs.5765.

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Bandyopadhyay, A. K., Nita Dilawar, Arun Vijayakumar, Deepak Varandani, and Dharambir Singh. "A low cost laser-raman spectrometer." Bulletin of Materials Science 21, no. 5 (October 1998): 433–38. http://dx.doi.org/10.1007/bf02744931.

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Sirleto, Luigi. "Micro and Nano Raman Lasers." Micromachines 12, no. 1 (December 25, 2020): 15. http://dx.doi.org/10.3390/mi12010015.

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Raman lasers (RLs) are a class of optically pumped laser, offering coherent lights at any desired wavelength by a proper choice of the pump wavelength, when both wavelengths are within the transparency region of the gain material and an adequately high nonlinearity and/or optical intensity are provided [...]
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Fu, Yao, Jincheng Cao, Kaoru Yamanouchi, and Huailiang Xu. "Air-Laser-Based Standoff Coherent Raman Spectrometer." Ultrafast Science 2022 (August 3, 2022): 1–9. http://dx.doi.org/10.34133/2022/9867028.

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Among currently available optical spectroscopic methods, Raman spectroscopy has versatile application to investigation of dynamical processes of molecules leading to chemical changes in the gas and liquid phases. However, it is still a challenge to realize an ideal standoff coherent Raman spectrometer with which both high temporal resolution and high-frequency resolution can be achieved, so that one can remotely probe chemical species in real time with high temporal resolution while monitoring the populations in their respective rovibronic levels in the frequency domain with sufficiently high spectral resolution. In the present study, we construct an air-laser-based Raman spectrometer, in which near-infrared femtosecond (fs) laser pulses at 800 nm and cavity-free picosecond N2+ air-laser pulses at 391 nm generated by the filamentation induced by the fs laser pulses are simultaneously used, enabling us to generate a hybrid ps/fs laser source at a desired standoff position for standoff surveillance of chemical and biochemical species. With this prototype Raman spectrometer, we demonstrate that the temporal evolution of the electronic, vibrational, and rotational states of N2+ and the coupling processes of the rovibrational wave packet of N2 molecules can be probed.
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Kato, Ryoei, and Kun'ichi Miyazawa. "Raman Laser Polymerization ofC60Nanowhiskers." Journal of Nanotechnology 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/101243.

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Photopolymerization ofC60nanowhiskers (C60NWs) was investigated by using a Raman spectrometer in air at room temperature, since the polymerizedC60NWs are expected to exhibit a high mechanical strength and a thermal stability. ShortC60NWs with a mean length of 4.4 μm were synthesized by LLIP method (liquid-liquid interfacial precipitation method). TheAg(2) peak ofC60NWs shifted to the lower wavenumbers with increasing the laser beam energy dose, and an energy dose more than about 1520 J/mm2was found necessary to obtain the photopolymerizedC60NWs. However, excessive energy doses at high-power densities increased the sample temperature and lead to the thermal decomposition of polymerizedC60molecules.
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TAKEDA, Shigeto, Hisako URABE, Ryosuke SHIMIZU, Motowo TSUKAKOSHI, and Takahiro KASUYA. "Development of a UV-Laser Excited Micro-Raman Spectrometer." Review of Laser Engineering 20, no. 6 (1992): 406–10. http://dx.doi.org/10.2184/lsj.20.6_406.

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Sparrow, Mark C., John F. Jackovitz, Calum H. Munro, William F. Hug, and Sanford A. Asher. "New 224 nm Hollow Cathode Laser-UV Raman Spectrometer." Applied Spectroscopy 55, no. 1 (January 2001): 66–70. http://dx.doi.org/10.1366/0003702011951263.

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Wang, Mingchang, Zaitong Lu, Lifen Zhang, Jizhong Chen, Bibo Feng, and Zhijiang Wang. "A grating spectrometer for Raman free electron laser diagnostics." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 331, no. 1-3 (July 1993): 667–69. http://dx.doi.org/10.1016/0168-9002(93)90133-3.

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Dissertations / Theses on the topic "Raman Laser Spectrometer (RLS)"

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Everall, Neil John. "Design and performance analysis of a picosecond-pulsed laser Raman spectrometer for fluorescence rejection in Raman spectroscopy." Thesis, Durham University, 1986. http://etheses.dur.ac.uk/6869/.

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Many attempts have been made to reduce fluorescence backgrounds in Raman spectra. A critical appraisal of fluoresence rejection techniques reveals that while many techniques are available which improve the Raman/fluorescence ratio (R/F), very few actually increase the spectral signal/noise (R/N), which is the most important parameter. Temporal-resolution of Raman and fluorescence photons was investigated in this laboratory, using a picosecond-laser system and gated photon detection. Two detection methods were evaluated. The first, an intensified diode array detector (DAD), could be gated "on" for periods of ca. 5 ns, at rates of up to 5kHz. This gave a 5-fold increase in R/F, but a slight reduction in R/N, for a fluorescor with τ(_f) ̴̱ 1O.5 ns. The R/N degradation arose as a result of the low laser output intensity at kHz pulse rates, rather than inefficiency in fluorescence rejection. The second method used a continuously-operated photomultiplie tube (PMT), and time-correlated photon counting with ca. 1 ns timing-resolution. This yielded R/F and R/N improvements of ca. 15 and 3 respectively (τ(_f) ̴̱ 12 ns).Although efficient fluorescence rejection was obtained with each system, the corresponding R/N enhancements were not practically significant. However, the development of theoretical models describing the performance of each system has identified modifications which should give valuable improvements. These include the use of a laser with MW peak powers at kHz pulse rates (DAD system), and use of a microchannel-plate PMT with 50 ps timing resolution. When these (and other) modifications are made, significant R/N enhancements (ca. 7 and 13 (DAD and PMT systems respectively)) are expected, thus enabling the study of the majority of "real world" samples. In addition, the limiting theoretical and practical performance of time-resolved rejection is considered, and several hitherto unreported aspects of the behaviour of the laser and detection systems are discussed. Other techniques were also evaluated, in particular utilising the differing Raman and fluorescence response to variations in laser intensity. While the non-linear fluorescence responseto intensity variations of cw lasers has been previously exploited, simple calculations indicate that the use of high-powered pulsed sources could allow discrimination at ca. 100-fold lower average powers. However, a satisfactory test of the calculations requires the construction of apparatus not presently available in this laboratory.
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Edwards, Peter Henry. "In-situ spectroscopy on Mars : ChemCam activities and preparations for the Raman Laser Spectrometer on ExoMars." Thesis, University of Leicester, 2018. http://hdl.handle.net/2381/42750.

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Thesis aims to perform appropriate preparatory work for the Raman Laser Spectrometer (RLS) on ExoMars. In order to test the prototype instrumentation it is important to select analogue samples as close as possible to the drill core that ExoMars will analyse. Work with 200 thousand spectra from the first 1000 sols of ChemCam operation on the Mars Science laboratory detected the presence of a basalt – trachybasalt igneous compositional trend, rich in alkali feldspar. These studies informed analogue sample selection at a Martian analogue site in the Utah desert as part of the MURFI rover trials. A flight representative Raman spectrometer was used in the field to acquire spectra. These were used to select a collection of analogues for further studies with RLS prototype instruments. These samples were chosen to be representative of the diverse mineralogy of the analogue site, this included; quartz, gypsum, anhydrite, celestine, barite and calcite. Work to fully characterise these samples used grain scale 532nm and 785nm Raman microscopes and an X-ray diffractometer instrument in order to determine the full composition for comparison with the capabilities or RLS. Nine of these samples were then analysed with the RLS Engineering Qualification Model to give as representative a view of RLS mission operation as possible. These studies found that whilst the RLS data was lower in spectral resolution and SNR compared to the laboratory instrumentation, it still possessed clear Raman bands enabling identification of all but two samples. These two samples were further analysed with the UK RLS prototype where additional Raman observation points produced clear bands allowing for the identification of the remaining samples. Recommendations for RLS operation and further testing include increasing the number of observation points on each sample and further testing with phyllosilicate analogues of the possible ExoMars landing site Marwth Vallis and Oxia Planum.
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Lloret, Patricia Ramos. "\"Avaliação da resistência flexural, microinfiltração e grau de conversão de uma resina composta fotoativada com luz halógena e laser de argônio\"." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/23/23134/tde-23052007-143833/.

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Nesta pesquisa foi avaliado a resistência flexural, a microinfiltração e o grau de conversão de uma resina composta micro-híbrida fotoativada por laser de argônio e luz halógena. Para o teste de resistência flexural e grau de conversão foram preparadas cinco amostras de 25 X 2 X 2mm de acordo com a norma ISO 4049. Os parâmetros de fotoativação utilizados em todas as etapas do trabalho foram: luz halógena (500mW/cm2) por 20 segudos, laser de argônio (250mW) por 10 e 20 segundos. As amostras foram lixadas com a seqüência de granulações 500, 800, 1000, 1200, 2500 e 4000. Os espécimes eram armazenados em água destilada, em recipiente escuro, em estufa a 37ºC por 24 horas e eram submetidos ao ensaio de resistência flexural (Máquina de Ensaios Mecânicos - Modelo 4411 ? Instron) em velocidade de 1mm/min. Para o estudo da microinfiltração foram utilizados dentes incisivos bovinos (n=20), As cavidades eram preparadas com brocas Carbide #330 com 4mm (altura) X 3mm (largura) X 2mm (profundidade). Os dentes eram então restaurados, e recebiam acabamento e polimento e em seguida eram armazenados em água destilada, em estufa a 37ºC por 24 horas. As amostras foram submetidas ao processo de termociclagem (500 ciclos de 30 segundos - 6ºC e 60ºC). Após a termociclagem, os ápices dos dentes eram selados com IRM e adesivo a base de cianoacrilato e imersos em fucsina básica a 0,5% por 24 horas, em estufa a 37ºC. A análise do grau de conversão foi feita com o Espectrômetro FT-Raman RFS 100/S (Bruker). Para o teste de resistência flexural foi realizado o teste de análise de variância, que mostrou não haver diferença estatisticamente significante entre as fontes fotoativadoras estudadas (p>0,05). A microinfiltração das margens oclusais (em esmalte) e gengivais (em dentina) dos três grupos foram analisadas separadamente por meio do teste de Mann-Whitney. Houve diferença estatisticamente significante ao nível de 5% entre esmalte e dentina, sendo que em todos os grupos a microinfiltração em dentina foi maior que em esmalte. O teste nãoparamétrico Kruskall-Wallis foi utilizado separadamente nas comparações entre as fontes para as análises do grau de microinfiltração em esmalte e dentina. Não houve diferença estatisticamente significante em ambas as comparações, sendo o valor de H= 0,1283 para esmalte e de H=2,3083 para em dentina. Para a análise do grau de conversão foi realizada a análise de variância (ANOVA) entre os grupos. Não houve diferença estatisticamente significante entre as fontes. Diante dos resultados obtidos, pode-se afirmar que o laser de argônio apresentou qualidade de fotoativação semelhante à da luz halógena e que nenhuma fonte ativadora estudada foi capaz de evitar a microinfiltração.
In the research was evaluated the flexural strength, the microleakage and the degree of conversion of a micro-hybrid composite resin photocured with argon laser and halogen lamp. For both flexural test and degree of conversion analysis five bar samples of composite resin (25 X 2 X 2mm) were prepared and polymerized following the ISO 4049. The light cured unit halogen was used with 500mW/cm2 for 20 seconds and the argon laser with 250mW for 10 and 20 seconds. After curing, samples were removed from the molds, polished using silicon carbide paper up to 4000 grit-number and stored in distilled water in dark environment at 37oC for 24 hours. The flexural property was quantified by a three-point loading test (Model 4411, Instron Corp., Canton, MA) with a cross-head speed of 1,0mm/min. To microleakage test sixty bovine incisors were used to prepare standardized class V cavities that were restored and polished. The specimens were stored in water for 24 hours at 37oC and thermocycled 500 times between water baths kept at 5 oC and 55 oC. After thermocycling, specimens were immersed in a aqueous solution of basic fuchsin for 24 hours. Longitudinal sections of each restoration were obtained and examined with a stereomicroscope for qualitive evaluation of microleakage. FTRaman RFS 100/S spectrometer (Bruker) was used to analyse the degree of conversion. The ANOVA test showed that there were no statistically significant difference of the flexural setrength between the photo-activation types evaluated in the flexural study. Microleakage data was statistically analysed by Mann-Whitney and Kruskall-Wallis tests. Enamel margins resulted in statistical lower degree of leakage than dentin margins. There was no statistically significant difference between the three types of photo-curing studied. The ANOVA test also showed that there were no statistically significant difference of the degree of conversion between the studied groups. According to the methodology used in this research it was concluded that the argon laser is a posible alternative for photocuring, providing the same quality of polymerization as do the halogen lamp. None of the photocured units tested in this study completely eliminated microleakage.
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Pereira, Alexandra Reis. "Initial development of a Raman Spectrometer for melanoma diagnosis applications." Master's thesis, 2021. http://hdl.handle.net/10316/98095.

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Dissertação de Mestrado Integrado em Engenharia Biomédica apresentada à Faculdade de Ciências e Tecnologia
O melanoma é o cancro da pele mais agressivo e letal. Em 2020, o número estimado de novos casos foi de 324 635 e 57 043 pessoas de ambos os sexos e todas as idades morreram em todo o mundo da doença. A elevada letalidade deve se (i) ao facto de o melanoma ser de difícil distinção em relação a outras lesões melanocíticas benignas, (ii) ao seu diagnóstico ser apenas baseado em aspetos morfológicos, e (iii) à sua alta probabilidade de metastização. Consequentemente, o processo de diagnóstico de melanoma leva a: excisões desnecessárias de lesões benignas e, mais grave, à não identificação de lesões em estado inicial, ou seja, melanomas in situ (MIS). O diagnóstico de MIS é de extrema importância uma vez que ainda são lesões não invasivas que podem ser tratadas através de uma excisão completa da lesão, com uma taxa de sucesso de cura de 97% a 5 anos. A espetroscopia Raman é uma técnica ótica de espetroscopia vibracional objetiva, não-invasiva e não-destrutiva que fornece informação da composição bioquímica de uma amostra. Como consequência do seu grande potencial, tem sido cada vez mais usada em aplicações biomédicas para complementar o diagnóstico clínico de doenças em fase inicial ou para assistir na orientação da cirurgia oncológica.O objetivo principal apresentado nesta dissertação é desenvolver um espetrómetro Raman inicial, simples, com aquisições rápidas, independente do operador e que permita detetar lesões MIS, assistindo clínicos no diagnóstico em ambiente de consulta. O espetrómetro irá incluir um laser na zona do infravermelho próximo e analisar a região espetral de elevados números de onda, de forma a evitar a influência da autofluorescência dos tecidos pigmentados no sinal adquirido. Esta região espetral já provou ser suficiente para distinguir lesões MIS e lesões melanocíticas benignas. Nesta Dissertação,todos os componentes necessários foram selecionados e, em seguida, a montagem do espetrómetro Raman foi simulada no software 3DOptix. Considerando o conhecimento adquirido durante a simulação, o protótipo foi implementado na mesa ótica. Em seguida, foram realizados procedimentos de alinhamento e calibração, usando lâmpadas de elementos químicos (halogéneo, neon e mercúrio (Hg)). Finalmente, o espetrómetro Raman desenvolvido foi testado com uma amostra de ciclohexano.A calibração do espetrómetro foi realizada com sucesso, tendo sido obtida uma região de deteção entre os 487 e 1110 nm e uma resolução experimental de menos de 3 nm com a lâmpada de Hg. Embora o espetrómetro desenvolvido tenha detetado com sucesso o espetro da lâmpada de Hg, o mesmo não foi possível com o sinal Raman de uma amostra de ciclohexano. Assim, concluiu-se que o sistema de deteção utilizado (sensor CMOS) terá de ser substituído por um detetor mais sensível, como um detetor de InGaAs, que adquire sinais com comprimentos de onda acima de 1100nm, a fim de detetar sinais fracos como o sinal Raman.
Melanoma is the most aggressive and lethal form of skin cancer. In 2020, there were 324 635 estimated new cases of the disease and 57 043 deaths worldwide for both sexes and all ages. The high mortality rate associated with melanoma is due to (i) its difficult distinction between benign melanocytic lesions (BML), (ii) the currently standard diagnosis for the disease being solely morphology-based, and (iii) its high metastatic propensity. Consequently, clinical diagnosis of melanoma often leads to unnecessary resections of benign lesions and worse, missing early stage lesions, melanoma in situ (MIS). Diagnosis of MIS lesions is extremely important since they are non-invasive melanomas that can be treated by a complete resection of the lesion, with a success rate of 97% 5-years. Raman Spectroscopy (RS) is an objective, non-invasive and non-destructive optical vibrational spectroscopic technique that gives insight into the biochemical composition of the sample. As a consequence of its great potential, it has been increasingly employed in biomedical applications to complement the clinical diagnosis of early stage diseases or to assist oncological surgery guidance. The main objective of the presented dissertation is the initial development of a Raman Spectrometer that can detect early stage melanomas, providing a simple, fast and operator-independent diagnosis to assist clinicians in the clinical setting. This spectrometer will use a near-infrared (NIR) laser and operate in the high-wavenumber (HWVN) region of the spectrum to avoid tissue autofluorescence. This region has effectively proved to distinguish MIS from BML in the past. In this work, all the components needed were selected, and then the Raman Spectrometer was simulated using the 3DOptix software. Considering the knowledge acquired during the simulation, the prototype was assembled in the optical table. Then, alignment and calibration procedures were carried out using several element lamps (halogen, neon and mercury (Hg)). Finally, the built-in Raman spectrometer was tested with a cyclohexane sample. The calibration was fully accomplished with a detection range from 487 to 1100 nm and an experimental resolution of less than 3 nm with the Hg lamp. However, although the built-in spectrometer has successfully detected the Hg lamp’s spectrum, it was not sensitive to the Raman signal of a sample of Cyclohexane. Hence, it was concluded that the detection system (CMOS sensor) used needs to be replaced by a more sensitive detector, such as InGaAs array detector, which acquires signals with longer wavelengths (above 1100nm), in order to detect weak signals such as Raman signals.
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Universidade de Coimbra - Centro-01-0145-FEDER-029956
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Books on the topic "Raman Laser Spectrometer (RLS)"

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Wardlaw, Graeme M. Kr-Ar laser Raman spectrometer for low temperature measurements. St. Catharines, Ont: Brock University, Dept. of Physics, 2004.

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Conference papers on the topic "Raman Laser Spectrometer (RLS)"

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Petrov, Georgi, Vladislav Yakovlev, and Vladislav Shcheslavskiy. "Raman spectroscopy without spectrometer." In Quantum Electronics and Laser Science Conference. Washington, D.C.: OSA, 2011. http://dx.doi.org/10.1364/qels.2011.pdpb6.

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Rull, F., A. Sansano, E. Díaz, C. P. Canora, A. G. Moral, C. Tato, M. Colombo, et al. "ExoMars Raman laser spectrometer overview." In SPIE Optical Engineering + Applications, edited by Richard B. Hoover, Gilbert V. Levin, Alexei Y. Rozanov, and Paul C. W. Davies. SPIE, 2010. http://dx.doi.org/10.1117/12.868159.

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Bazalgette Courrèges-Lacoste, Gregory, Berit Ahlers, Erik Boslooper, Fernando Rull-Perez, and Sylvestre Maurice. "Combined raman spectrometer/laser-induced breakdown spectrometer design concept." In International Conference on Space Optics 2006, edited by Errico Armandillo, Josiane Costeraste, and Nikos Karafolas. SPIE, 2017. http://dx.doi.org/10.1117/12.2308176.

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Díaz, E., A. G. Moral, C. P. Canora, G. Ramos, O. Barcos, J. A. R. Prieto, I. B. Hutchinson, et al. "ExoMars Raman laser spectrometer breadboard overview." In SPIE Optical Engineering + Applications, edited by Richard B. Hoover, Paul C. W. Davies, Gilbert V. Levin, and Alexei Y. Rozanov. SPIE, 2011. http://dx.doi.org/10.1117/12.896182.

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Rull, F., A. Sansano, E. Díaz, C. P. Canora, A. G. Moral, C. Tato, M. Colombo, et al. "ExoMars Raman laser spectrometer for Exomars." In SPIE Optical Engineering + Applications, edited by Richard B. Hoover, Paul C. W. Davies, Gilbert V. Levin, and Alexei Y. Rozanov. SPIE, 2011. http://dx.doi.org/10.1117/12.896787.

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Beasley, Gary B., and Chrysanthos A. Panayiotou. "CCCC and LASER-TEC educational Raman spectrometer demo." In 15th Conference on Education and Training in Optics and Photonics, ETOP 2019, edited by Anne-Sophie Poulin-Girard and Joseph A. Shaw. SPIE, 2019. http://dx.doi.org/10.1117/12.2523866.

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Rodriguez, Pablo, Marina Benito, César Quintana, Carlos Pérez, and Andoni Moral. "Flight laser module monitoring during ExoMars Raman laser spectrometer environmental testing." In International Conference on Space Optics — ICSO 2021, edited by Zoran Sodnik, Bruno Cugny, and Nikos Karafolas. SPIE, 2021. http://dx.doi.org/10.1117/12.2599446.

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Santiago, Amaia, Gonzalo Ramos Zapata, Cecilia Gordillo, Juan F. Cabrero, Andoni Moral Inza, José A. Rodriguez, Miguel Sanz, et al. "Raman laser spectrometer optical head: flight model performance verification." In Space Telescopes and Instrumentation 2018: Optical, Infrared, and Millimeter Wave, edited by Howard A. MacEwen, Makenzie Lystrup, Giovanni G. Fazio, Natalie Batalha, Edward C. Tong, and Nicholas Siegler. SPIE, 2018. http://dx.doi.org/10.1117/12.2313462.

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Karas, Boris, and Alexandr Grishkanich. "Portable Raman dual-laser spectrometer for oil and gas." In Environmental Effects on Light Propagation and Adaptive Systems III, edited by Karin Stein and Szymon Gladysz. SPIE, 2020. http://dx.doi.org/10.1117/12.2574603.

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Ingley, R., I. B. Hutchinson, H. G. M. Edwards, A. G. Moral, E. Diaz, G. Ramos, O. Barcos, et al. "ExoMars Raman laser spectrometer breadboard: detector design and performance." In SPIE Optical Engineering + Applications, edited by Richard B. Hoover, Paul C. W. Davies, Gilbert V. Levin, and Alexei Y. Rozanov. SPIE, 2011. http://dx.doi.org/10.1117/12.899541.

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Reports on the topic "Raman Laser Spectrometer (RLS)"

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Benn, D., R. Linnen, and T. Martins. Evaluating white mica as an indicator mineral for lithium bearing pegmatites, Wekusko Lake pegmatite field, Manitoba, Canada. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328982.

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This project investigates the potential use of white micas as an indicator mineral within Li-bearing pegmatites and the potential of field portable techniques, such as Raman spectroscopy and Laser Induced Breakdown Spectroscopy (LIBS) as real-time techniques in exploration. The pegmatites in the Wekusko Lake field, Manitoba, Canada, display five zones of varying mineralization. White micas display two textures in the field (primary igneous and secondary) and four textures were identified by backscattered electron imaging (poor zonation, rimmed, patchy and exsolution). The white micas were analysed by Electron Probe Micro-Analysis (EPMA) and Laser Ablation Induction-Coupled Plasma Mass Spectroscopy (LA-ICP-MS) and the results show a strong correlation in the Li content of the white mica and the whole rock Li2O obtained from the assays of drill core. The K/Rb vs. Cs contents of the white mica indicate that the most prospective dikes contain moderate to highly evolved grains. The use of portable Raman Spectrometer, while useful for mineral identification, was not able to detect a significant Li signature at the concentrations tested (1500-6000 ppm).
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