Prof. Jingsong Li
Prof. Jingsong Li
Anhui University, China
Title: Novel quantum cascade laser based sensor and its application
A laser spectroscopy system based on a broadband tunable external cavity quantum cascade laser (ECQCL) and a mini quartz crystal tuning fork (QCTF) detector was developed for standoff detection of volatile organic (VOC) compounds. Based on the self-established spectral analysis model based on multiple algorithms, quantitative and qualitative analysis of VOC components (i.e. ethanol and acetone) was detailedly investigated in both closed cell and open path configurations. A good agreement was obtained between the experimentally observed spectra and the standard reference spectra. For open path detection of VOCs, the sensor system was demonstrated at a distance of 30 m. The preliminary laboratory results show that standoff detection of VOCs at a distance of over 100 m is very promising.
Dr. Jingsong Li received his PhD degree in Optics from Hefei Institute of Physical Science (HIPS), Chinese Academy of Sciences (CAS), China in 2008. He worked as a Postdoctoral fellowship, Research scientist and Visit scholarship at Reims University (France), Max Planck Institute for Chemistry (Germany), Colorado State University (USA) and Swiss Federal Laboratories for Materials Science and Technology (Switzerland), respectively. He is currently a professor at the College of Physics and Material Science, Anhui University, China. His research involves the development and implementation of novel mid-infrared quantum cascade lasers, sensitive spectroscopy techniques and advanced digital signal processing for trace gases and Volatile Organic Components (VOC) sensing for atmospheric chemistry, industrial and environmental applications. He has authored over 60 journal (including Sensors and Actuators B, Optics Express, Applied Spectroscopy and Applied Spectroscopy Reviews, etc.) and conference papers (invited talk at IRMMW2015, EESED2015& SOPO2017). Jingsong Li’s professional activities have included: Member of IEEE, OSA, SPIE and EGU; Approved candidate for a Visiting Fellowship in Canadian Government Laboratories, Natural Sciences and Engineering Research Council of Canada; Editorial board member of Sensors & Transducers Journal; Technical Program Committee Member of IEEE Sensors 2015-2017; Scientific Referee for tens of SCI international journals concerning fields of optics, laser/fibre sensor, digital signal processing and applied spectroscopy, and Referee of Research Proposal for China Scholarship Council (CSC), National Natural Science Foundation of China (NSFC), Swiss National Natural Science Foundation (SNSF).