Mark C. Phillips is currently an associate research professor at the James C. Wyant College of Optical Sciences, University of Arizona. His research interests include developing new techniques and instrumentation for laser-based spectroscopy and sensing of materials in all phases of matter. He is currently developing and using new swept-wavelength external cavity quantum cascade lasers (ECQCLs) for high-performance infrared spectroscopy and sensing of gases and solids. Applications include standoff chemical plume detection, trace gas sensing, and measurements in extreme environments including combustion and explosive fireballs. He is researching new laserspectroscopy techniques for measurement of atoms in laser-induced plasma systems, including isotopic resolution and standoff detection capabilities. He is also continuing to develop spectral analysis and optical modeling of atoms and molecules for use in high-temperature plasma and explosive fireball conditions.