About
Sushil Kumar is an Associate Professor in the Department of Electrical and Computer Engineering at Lehigh University, affiliated with the Center for Photonics and Nanoelectronics. His research focuses on semiconductor optoelectronics and quantum electronics, particularly terahertz quantum-cascade lasers and detectors, with applications in chemical/biological sensing, spectroscopy, and imaging. He has pioneered high-temperature/high-power terahertz lasers and developed nanostructured devices for real-world applications such as explosives detection and medical diagnostics.
Education:
- Ph.D., Electrical Engineering, Massachusetts Institute of Technology
- M.S., Electrical Engineering, University of Michigan
- B.S., Electronics and Communications, Delhi College of Engineering (India)
Research Interests: Kumar’s work spans semiconductor heterostructures in GaAs/InP systems, terahertz photonics, quantum cascade laser design, and plasmonic devices. His innovations include phased laser arrays, nanoplasmonic sensors, and high-power THz emitters. He emphasizes translating lab breakthroughs into practical solutions for security, healthcare, and astrophysics.
Key Articles Trends: Recent publications highlight advances in high-power THz lasers (e.g., 2W output), beam-combining techniques, and biomedical sensors using nanoplasmonic interferometry. His work bridges fundamental physics with applied engineering, addressing global challenges in sensing and imaging.
Labs/Teams: Based in Sinclair Lab (7 Asa Drive, Bethlehem, PA), he leads projects on quantum cascade lasers and terahertz systems. Collaborates with industry and academic partners in photonics and materials science.
