< BK21 플러스 BEST 정보기술 사업단 세미나 개최 안내 > 

개최일시 : 2018년 9월 11일 화요일 11:00 ~ 12:00

개최장소 : 제3공학관 C716호

세미나 제목 : Active and Nonlinear Polaritonic Metasurfaces

내용 :

Metamaterials and metasurfaces can be used to manipulate, control and tailor the electromagnetic properties in unprecedented ways. They are artificially made structures able to exhibit novel functionalities not available in nature. In different context, Intersubband transitions in n-doped semiconductor heterostructures provide the possibilities to engineer giant electro-optic effect and one of the largest known nonlinear optical responses in condensed matter systems. I will discuss how we engineer and use these giant electro-optic effect and nonlinear responses to produce polaritonic metasurfaces with ultra-fast electrical tuning and ultra-thin highly-nonlinear metasurfaces for efficient frequency conversion especially for the Second-Harmonic Generation and Third-Harmonic Generation. Structure discussed here represent a novel kind of hybrid metal-semiconductor metamaterials in which exotic optical properties are produced by coupling electromagnetically-engineered plasmonic resonant modes in plasmonic nanostructures with quantum-engineered intersubband transitions in semiconductor heterostructures.

강연자 성함&직함 / 소속 : 이종원 교수 / UNIST

초청자 : 전기전자공학과 교수 김동현