Paper 13115-5
Paper 13115-5
Excitation size and power dependence of whispering gallery mode and Fabry-Perot mode in a single GaN microrod (Invited Paper)
18 August 2024 • 11:20 AM - 11:50 AM PDT
Abstract
GaN hexagonal microrod has been used for generating exciton-polaritons at room temperature. When a GaN microrod is excited by a laser, various photonic modes and polariton modes can be simultaneously generated. Here, we compared the optical characteristics of the Fabry-Perot mode and the whispering gallery mode generated in a GaN microrod and found a method for extracting a specific mode among various photonic modes in a GaN hexagonal microrod. Excitation spot size dependence of angle-resolved photoluminescence is carried out to investigate the tendency of photonic and polaritonic modes.
Presenter
KAIST (Korea, Republic of)
Yong-Hoon Cho is a Professor at the Department of Physics, Korea Advanced Institute of Science and Technology (KAIST), Republic of Korea. He received his Ph.D. degree in Physics from Seoul National University in 1997. He is a Fellow of the Korean Academy of Science and Technology and a Fellow of SPIE since 2018 and 2019, respectively. He is the Founder and Director of the KAIST LED Research Center and Educational Program for LED since 2010. He was appointed as a KAIST Endowed Chair Professor (2015-2018) and KT Chair Professor (2024~Present) and served as an Editor-in-Chief of the Journal of the Korean Physical Society (2021-2022), and currently serves as an Associate Editor of IEEE Transactions on Nanotechnology and an Editorial Board Member of Scientific Reports. He has more than 250 refereed international journal publications and more than 440 international conference presentations.