Laser Spectroscopy and Plasma Lab (LSPL)

Professor Wang's Research Group

Department of Physics and Astronomy, Mississippi State University
  • Microwave Plasma assisted combustion setup

  • Lab R30

  • Lab R36

  • Fiber loop ringdown system: sensor head and sample stage

  • Ringdown signal as seen in the oscilloscope

  • Breath gas analysis system

  • Microwave plasma assisted combustion flame

  • Experimental setup for optical trapping

  • Experimental setup for optical trapping

  • Optical trapping

  • Nd:YAG laser pumped dye laser

  • Lab R30

  • Lab R36

  • Nd:YAG laser , Lab R30

  • Lab R275

  • NIR cavity ringdown system for trace gases

  • Lab R284

  • PAC1

  • Cold plasma

  • Cold plasma

  • Optical trap-cavity ringdown spectroscopy (OT-CRDS)

  • Optical trapping: trapped particle cones

  • Optical trapping: trapped particle

  • Optical trapping: a mini trap

  • Optical alignment: interference rings

  • Lab R36

    Lab R36

  • Optical trapping single particle Raman

Chuji Wangdrwang


Department of Physics and Astronomy

Mississippi State University

Office:     138 Hilbun Hall 
E-mail:      This email address is being protected from spambots. You need JavaScript enabled to view it.  
Phone      662-325-9455 
Fax:      662-325-8898 
Address:     P.O. Drawer 5167, Mississippi State, Ms 39762


Chuji Wang's research career started with his Ph.D. study (1993-1998) in laser-induced fluorescence spectroscopy of free radicals generated by discharge under supersonic molecular beam condition, followed by his first postdoctoral research (1998-2000) in laser photolysis/laser-induced fluorescence spectroscopy of large alkoxy radicals, then moved to his second postdoctoral research (2000-2001) in the development of plasma-cavity ringdown spectroscopy. He was a Senior Laser Scientist in the industry (2001-2002) prior to his appointment at Mississippi State University.

The nature of Dr. Wang’s research is multidisciplinary, involving physics, chemistry, and optical engineering. His research interest is to develop and apply measuring, monitoring, and sensing technologies to address real problems in energy, environment, and biomedical engineering. He believes that one powerful technology, CRDS, can have unlimited application potential in the aforementioned fields and beyond. Currently, Wang group’s research efforts are dedicated to

  1. Laser diagnostics in plasma and combustion, especially, plasma-assisted combustion (PAC). 
  2. Time-domain fiber optic sensor and sensor network for large-scale, multi-function (physical, chemical, and biological) monitoring and sensing. Time-domain fiber optic sensor and sensor network for large-scale, multi-function (physical, chemical, and biological) monitoring and sensing. 
  3. Cavity ringdown instrumentation for trace elements, isotopes, and volatile organic compounds. 
  4. Breath biomarkers for non-invasive disease diagnostics and metabolic status monitoring.
  5. Physical and chemcial study of single aerosol particles optically trapped in air. 


Doctoral positions are open for plasma diagnostics (DOE grant) and atmospheric mercury kinetics studies (NSF grant, in collaboration with SUNY-ESF) using laser spectroscopy. If you are interested, please send your resume to Prof. Wang at