https://www.ece.gatech.edu/faculty-staff-directory/david-s-citrinhttp://photonics.georgiatech-metz.fr/node/33Professional Experience: Manage research group that carries out theoretical and experimental research in --Nanotechnology: Fabrication and modeling of optical and electronic properties of a range of nanoscale materials--Terahertz Science and Technology: Spectroscopy, security imaging and nondestructive evaluation, terahertz quasi-optical components, terahertz nonlinear optics--Nonlinear Optics: Coherent nonlinear optical phenomena in semiconductors--Ultrafast Phenomena: Ultrahigh-speed optical and electronic effects in semiconductor nanostructures and devices.--Chaotic External Cavity Lasers: Ultrahigh-rate random bit generation, reservoir computing, secure optical communications based on chaos synchronization in semiconductor laser diodes with time-delay feedback--Optical Sensors: Biofilm detection in aqueous environments--Photonic Crystals: Design, fabrication, and modeling of novel photonic-crystal sensors, couplers, and components--Nanoplasmonics: Theory of the optical properties nanoparticle chains and arrays, nanoparticle for hyperthermia treatment of cancers and nanoscale heat deliverySpecialties: Research, research-group management, consulting, higher education