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Portable Stand-Off Time-Gated Raman for Detection of Explosive Precursor
Abstract
Remote detection of trace explosives and hazardous chemicals has been an ongoing challenge and a critical issue in defense science, public safety, and counterterrorism. Raman spectroscopy, a form of inelastic scattering, acts as a “fingerprint” analysis method for substance identification with high confidence in the detection of chemicals based on their vibrational modes. Here, we present a portable stand-off timegated Raman spectroscopy, which consists of a passive Q-switched pulsed laser, a designed gated ICMOS, a spectrometer, and a telescope, with an overall size of 476.5×321.5×219.3 mm and a weight of 23.2 kg, which is much more compact and portable than reported previously. To confirm the effectiveness of the designed portable time-gated Raman spectroscopy, detections at different working distances and various amounts of substances are carried out. High levels of Raman identification are acquired even for 0.1 mg at a 10 m distance. Furthermore, we simulate realistic encounters in a possible war-zone scenario by testing the system’s ability to recognize urea samples on different substrates such as an aluminum plate, woodblock, cardboard, black cloth, and leaf; good characteristic recognition is shown.
Supporting agencies: We would like to acknowledge support from the Guangdong Province Key R&D Program under Grant 2019B090917012, Natural Science Foundation of China under Grant 62075237, The Stabilization Supporting Project of Science and Technology on Near-Surface Detection Laboratory under Grant 6142414200714, Research and development project of scientific research instruments and equipment of Chinese Academy of Sciences under Grant ZDKYYQ20220007, Major scientific research instrument development project of National Natural Science Foundation of China under Grant 52127817, Key deployment projects of Chinese Academy of Sciences under Grant ZDRW-XH-2021-6.
About the Authors
W. Ren
State Key Laboratory of Transient Optics and Photonics; Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences
China
China
Wenzhen Ren
Xi’an
H. Wang
Science and Technology on Near-Surface Detection Laboratory; The First Scientific Research Institute of Wuxi; University of Chinese Academy of Sciences
China
China
Hui Wang
Wuxi; Shijingshan District, Beijing
Z. Xie
Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences
China
China
Zhengmao Xie
Xi’an
X. P. Zhu
State Key Laboratory of Transient Optics and Photonics; Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences; University of Chinese Academy of Sciences; Key & Core Technology Innovation Institute of the Greater Bay Area
China
China
Xiang Ping Zhu
Xi’an; Shijingshan District, Beijing; Guangzhou, Guangdong
P. Zhang
State Key Laboratory of Transient Optics and Photonics; Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences; University of Chinese Academy of Sciences; Key & Core Technology Innovation Institute of the Greater Bay Area
China
China
Pu Zhang
Xi’an; Shijingshan District, Beijing; Guangzhou, Guangdong
B. Wang
State Key Laboratory of Transient Optics and Photonics; Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences; University of Chinese Academy of Sciences
China
China
Bo Wang
Xi’an; Shijingshan District, Beijing
C. Huang
State Key Laboratory of Transient Optics and Photonics; Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences; University of Chinese Academy of Sciences
China
China
Cheng Huang
Xi’an; Shijingshan District, Beijing
D. Xu
The First Scientific Research Institute of Wuxi
China
China
Dan Dan Xu
Wuxi
W. Zhao
State Key Laboratory of Transient Optics and Photonics; Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences; University of Chinese Academy of Sciences; Key & Core Technology Innovation Institute of the Greater Bay Area
China
China
Wei Zhao
Xi’an; Shijingshan District, Beijing; Guangzhou, Guangdong
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Review
For citations:
Ren W., Wang H., Xie Z., Zhu X.P., Zhang P., Wang B., Huang C., Xu D., Zhao W. Portable Stand-Off Time-Gated Raman for Detection of Explosive Precursor. Zhurnal Prikladnoii Spektroskopii. 2024;91(4):616.
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