Invited Speakers

Kyunghwan Oh is a Professor Emeritus in the Department of Physics at Yonsei University, Seoul, Korea, and is currently affiliated with the Department of Physics at Nazarbayev University, Astana, Kazakhstan.

He earned his B.S. and M.S. degrees in Physics from Seoul National University in 1986 and 1988, respectively. He then moved to the United States to pursue further studies at Brown University, where he obtained an M.S. in Engineering in 1991 and a Ph.D. in Optics in 1994.

Since completing his Ph.D., Prof. Oh has focused his research on fiber optics, optical materials, and lasers. Over the years, he has been affiliated with several world-renowned photonics research institutes, including Lucent Bell Labs (Murray Hill, USA), the Leibniz Institute for Photonic Technology (Germany), the Optoelectronics Research Centre at the University of Southampton (UK), EPFL (Switzerland), and The University of Tokyo (Japan), among others.

He has authored and co-authored more than 250 SCI journal papers, holds seven U.S. patents, and has contributed to three books—including Silica Optical Fiber Technology (Wiley)—as well as four book chapters.

A Fellow of the Optical Society of America (OSA), Prof. Oh has played an active role in the photonics community. He has served as a Topical Editor for Optics Letters, an Associate Editor for IEEE Photonics Technology Letters and Optical Fiber Technology (Elsevier), a member of the International Advisory Board for Optics Communications (Elsevier), and Editor-in-Chief of the Journal of The Optical Society of Korea.

He has also contributed to organizing international conferences, serving as the Optical Fiber Technology Subcommittee Chair for the IEEE Photonics Society Annual Meeting and as a member of the International Steering Committee for CLEO-PR.

Kyungtaek Min received his B.S. degree in Physics from Seoul National University’s Department of Physics and Astronomy in 2009. He then remained at Seoul National University in an integrated M.S./Ph.D. program in Physics, completing his doctoral degree in 2015 under the supervision of Prof. Heonsu Jeon with a dissertation entitled “Photonic Crystal Phosphors.

Following his Ph.D., he served as a Postdoctoral Researcher first in the Department of Biophysics and Chemical Biology at Seoul National University (2015–2016), focusing on the development of nanophotonic devices, and then in the Department of Energy Systems Research at Ajou University (2016–2018), where he investigated bio-photonic applications. In 2018, he joined the Department of Semiconductor Engineering at Tech University of Korea as an Associate Professor, where he leads efforts in developing advanced optoelectronic materials and devices.

Dr. Min’s research spans the design and fabrication of photonic and nanostructured materials for advanced optoelectronic applications. He is particularly interested in leveraging photonic crystal architectures to develop lasers, optical sensors, and light-emitting and photodetecting devices. His recent work has focused on efficient color- and wavelength-conversion strategies for micro-LED display applications using photonic crystal phosphor films.

Dr Haug studied Physics at the Universities of Ulm (Germany) and Waikato (New Zealand) with a graduation project on gas-phase epitaxy of silicon. After that, he pursued a PhD program at ETH Zürich (Switzerland), studying Cu(In,Ga)Se2 solar cells. After PostDoc positions at EMPA (Switzerland) and at the  Jülich Research Centre in Germany he became research group leader at the University of Neuchatel in 2005 and eventually at EPFL in 2009. His main research interests are optics, charge transport in semiconductors and renewable energy in general. His current work is devoted to passivating contacts for crystalline silicon solar cells, using thin silicon films as contact layers.