3 papers
physics.optics2022
Resonance-enhanced spectral funneling in Fabry-Perot resonators with a temporal boundary mirror
Kanghee Lee, Junho Park, Seojoo Lee +4
A temporal boundary refers to a specific time at which the properties of an optical medium are abruptly changed. When light interacts with the temporal boundary, its spectral conte…
cond-mat.str-el2021
Interlayer coupling and ultrafast hot electron transfer dynamics in metallic VSe2/graphene van der Waals heterostructures
Tae Gwan Park, Byoung Ki Choi, Junho Park +3
Atomically thin vanadium diselenide (VSe2 ) is a two-dimensional transition metal dichalcogenide exhibiting attractive properties due to its metallic 1T-phase. With the recent deve…
physics.optics2017
Linear frequency conversion via sudden merging of resonances in time-variant metasurfaces
Kanghee Lee, Jaehyeon Son, Jagang Park +4
Energy conversion in a physical system requires time-translation invariance breaking according to Noether's theorem. Closely associated with this symmetry-conservation relation, th…