교수소개

학력 (Educations)

• (1989) Ph.D, Dept. of Physics, KAIST (Korean Advanced Institute of Science and Technology), Seoul, Korea
• (1984) BS, Dept. of Physics, Yonsei University, Seoul, Korea

경력 (Experiences)

• (1997-present) Professor, Department of Physics, Hanyang University, Seoul, Korea
• (1989-1997) Senior Researcher, ETRI (Electronics and Telecommunication Research Institute), Korea

연구관심분야 (Research areas)

• Nanophotonics, Non-Hermitian photonics, Surface plasmonics

연구개요 (Recent research activities)

• For the last two decades, nanophotonics have successfully proposed numerous novel interaction schemes and device concepts within the context of photonic bandgap crystals, plasmonics, and metamaterials. Nevertheless, their practical applications are, in most cases, unclear with their inherent limitations resulting from material losses, narrowband nature of localized states, reciprocity in the linear electromagnetism, and many others. For example, groundbreaking visions of negative index metamaterials still remain unestablished in the optical domain in spite of extensive research and development devoted for decades. Therefore, it is presently of special interest to treat nanophotonic systems in fundamentally different viewpoints that may overcome previous limitations in unprecedented ways and also even strengthen the nanophotonics research momentum that has been built so far.

• Our recent research activities are mainly focused on Non-Hermitian (NH) Nanophotonics that expands the conventional resonance-based nanophotonics to the conceptually far-reaching open-system domains where various unusual physical effects take place with manifestation of anti-linear symmetry groups, exceptional-point singularities, topological parametric structures, complex energy-spectral chirality, and associated broadband time-asymmetric operations. In this proposed research, we will explore, in both theory and experiments, various strongly-interacting open-system configurations provided by optical gains, losses, scattering, radiative inter-modal coupling, and mixed direct/indirect feedback structures.