Standoff explosives trace detection and imaging by selective stimulated Raman scattering

Bremer, Marshall T.; Dantus, Marcos

doi:10.1063/1.4817248

Cited by 38 publications

(38 citation statements)

References 29 publications

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“…Femtosecond CARS with pulse shaping for selective excitation of desired features in explosives has also been achieved [133][134][135]. Femtosecond stimulated Raman scattering using a pulse shaper to achieve spectral resolution (no spectrometer needed) enabled rasterscanned vibrational imaging for explosive identification to 10 m [136]. Nanosecond CARS has also achieved explosive detection and identification [131].…”

Section: Coherent Ramanmentioning

confidence: 97%

Advances in explosives analysis—part II: photon and neutron methods

et al. 2015

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The number and capability of explosives detection and analysis methods have increased dramatically since publication of the Analytical and Bioanalytical Chemistry special issue devoted to Explosives Analysis [Moore DS, Goodpaster JV, Anal Bioanal Chem 395:245-246, 2009]. Here we review and critically evaluate the latest (the past five years) important advances in explosives detection, with details of the improvements over previous methods, and suggest possible avenues towards further advances in, e.g., stand-off distance, detection limit, selectivity, and penetration through camouflage or packaging. The review consists of two parts. Part I discussed methods based on animals, chemicals (including colorimetry, molecularly imprinted polymers, electrochemistry, and immunochemistry), ions (both ion-mobility spectrometry and mass spectrometry), and mechanical devices. This part, Part II, will review methods based on photons, from very energetic photons including X-rays and gamma rays down to the terahertz range, and neutrons.

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Section: Coherent Ramanmentioning

confidence: 97%

Advances in explosives analysis—part II: photon and neutron methods

et al. 2015

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“…However, they utilize different signal-detection devices. Also, instead of using two beams to provide pump and Stokes pulses, single-pulse CARS microscopy (56) and single-beam SRS imaging (57) have been demonstrated using intrapulse excitation of broadband lasers. In addition to laser scanning, a wide-field CARS microscope has been developed using a dark-field objective lens (58).…”

Section: Instrumentation Of Crs Microscopymentioning

confidence: 99%

Coherent Raman Scattering Microscopy in Biology and Medicine

Zhang

Zhang²,

Cheng³

2015

Annu. Rev. Biomed. Eng.

178

146

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Advancements in coherent Raman scattering (CRS) microscopy have enabled label-free visualization and analysis of functional, endogenous biomolecules in living systems. When compared with spontaneous Raman microscopy, a key advantage of CRS microscopy is the dramatic improvement in imaging speed, which gives rise to real-time vibrational imaging of live biological samples. Using molecular vibrational signatures, recently developed hyperspectral CRS microscopy has improved the readout of chemical information available from CRS images. In this article, we review recent achievements in CRS microscopy, focusing on the theory of the CRS signal-to-noise ratio, imaging speed, technical developments, and applications of CRS imaging in bioscience and clinical settings. In addition, we present possible future directions that the use of this technology may take.

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“…The reference pulse is identical except for the dispersion added by the window which detunes the vibrational excitation. The capabilities of SB-SRS were demonstrated by detecting individual micro-crystals (15 -100ng) of ammonium nitrate on a "post-it note" with 20 laser shots, as well as imaging small quantities of analyte on cotton and plastic [3].…”

Section: Introductionmentioning

confidence: 99%