| Biography | |
|---|---|
 Prof. Jingsong Li Anhui University, China |
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| Title: Novel Photodetector with Supercontinuum Response (UV-THz) and Applications | |
| Abstract: Laser absorption spectroscopy based gas sensors have been demonstrated as a promising new tool for high resolution molecular spectra and for noninvasive, real-time identification and quantification of trace gases in environmental atmosphere monitoring and isotope analysis, human breath gases diagnosis, gas exchange process between soil and atmosphere, Volatile Organic Compounds (VOCs) analysis and remote sensing, etc. Instead of traditional semiconductor detectors, we use the piezoelectric effect and resonant effect of the QCTF to gauge the light intensity, which has the advantages of low-cost and low-power consumption, small volume, liquid nitrogen free and wider spectral response bandwidth from ultraviolet (UV) to terahertz (THz). To demonstrate this technique, a novel multi-gas sensor system based on a single quartz crystal tuning fork (QCTF) and multi-frequency synchronous modulation strategy is proposed for multiple trace gases detection. | |
| Biography: 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). | |
