Photo-vibrational sensing of trace chemicals and explosives by long-distance differential laser Doppler vibrometer

• Main Authors: Fu, Yu, Liu, Huan, Hu, Qi, Xie, Jiecheng
• Other Authors: Fountain, Augustus W.
• Format: Article
• Language: English
• Published: 2019
• Subjects: Photoacoustic; Trace Chemicals & Explosives; Engineering::Mechanical engineering
• Online Access: https://hdl.handle.net/10356/106383; http://hdl.handle.net/10220/49597
• Institution: Nanyang Technological University

Photoacoustic/photothermal spectroscopy is an established technique for trace detection of chemicals and explosives. Normally high-sensitive microphone or PZT sensor is used to detect the signal in photoacoustic cell. In recent years, laser Doppler vibrometer (LDV) is proposed to remote-sense photoa...