Remote pulsed laser Raman spectroscopy system for detecting water, ice, and hydrous minerals

García, Christophe; Abedin, M. Nurul; Sharma, Shiv K.; Misra, A. K.; Ismail, Syed; Singh, Upendra N.; Refaat, Tamer F.; Elsayed-Ali, Hani E.; Sandford, Stephen P.

doi:10.1117/12.680879

Cited by 13 publications

(21 citation statements)

References 10 publications

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“…The standoff Raman spectra of standard samples Carbon tetrachloride CCL 4 and Acetone verified the performance of Raman system.…”

Section: Discussionmentioning

confidence: 84%

“…Carbon tetrachloride CCL 4 and Acetone (CH 3 ) 2 CO are typically used as a calibration standard for the Raman measurements, therefore they are used to test and evaluate the performance of the SRS system used in this study. They were chosen as the first samples to test because of their strong and intensive scattering capability.…”

Section: Results and Discussion Standoff Raman Spectra Of Standard Samentioning

confidence: 99%

“…The most important characteristic band of CCL 4 was found at 459 cm -1 . In the case of Acetone, the fingerprint Raman bands are observed at (390, 507, 786, 1067, 1226, 1426, 1709, 2920, 3001) cm -1 .…”

Section: Fig(1): Standoff Raman Spectra Of CCL 4 Andmentioning

confidence: 99%

“…In Fig.(1) CCL 4 shows its three main Raman active peaks at (216, 312, 459) cm -1 . The most important characteristic band of CCL 4 was found at 459 cm -1 .…”

Section: Fig(1): Standoff Raman Spectra Of CCL 4 Andmentioning

confidence: 99%

“…The standoff Raman system was tested in detection of C4 explosive while CCL 4 and Acetone tested as calibration standards at distance of 4 m under dark conditions. One of the aims of the study is to study the influence of integration time and laser power on Raman signal.…”

Section: Introductionmentioning

confidence: 99%

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2017

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In this paper standoff Raman spectroscopy SRS system for explosive materials is developed. Standoff Raman detection of C4 substance under dark laboratory condition at 4 m distance is achieved. A frequency doubled Nd:YAG laser at 532 nm excitation is used. The Raman scattered light is collected by a telescope and then transferred via fiber optics cable to spectrograph and finally into CCD detector. Notch filter used to reject Rayleigh scattering light. Carbon tetrachloride CCL 4 and Acetone (CH 3 ) 2 CO are used as a calibration standard for the Raman measurements because of their strong and intensive scattering capability. Raman measurement of C4 explosive is also acquired using conventional Raman microscopy for verification of standoff Raman measurements. The effects of integration time and laser power on Raman cross section under dark condition were studied. Standoff Raman detection of C4 substance at 4 m distance under partially illuminated condition has been achieved and hence the effect of higher integration time was studied under the same condition.

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“…The standoff Raman spectra of standard samples Carbon tetrachloride CCL 4 and Acetone verified the performance of Raman system.…”

Section: Discussionmentioning

confidence: 84%

Section: Results and Discussion Standoff Raman Spectra Of Standard Samentioning

confidence: 99%

Section: Fig(1): Standoff Raman Spectra Of CCL 4 Andmentioning

confidence: 99%

“…In Fig.(1) CCL 4 shows its three main Raman active peaks at (216, 312, 459) cm -1 . The most important characteristic band of CCL 4 was found at 459 cm -1 .…”

Section: Fig(1): Standoff Raman Spectra Of CCL 4 Andmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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