4 papers
Dynamic realization of emergent high-dimensional optical vortices
Dongha Kim, Geonhyeong Park, Yun-Seok Choi +9
The dimensionality of vortical structures has recently been extended beyond two dimensions, providing higher-order topological characteristics and robustness for high-capacity info…
Fabrication of a 3D mode size converter for efficient edge coupling in photonic integrated circuits
Hyeong-Soon Jang, Hyungjun Heo, Sangin Kim +6
We demonstrate efficient edge couplers by fabricating a 3D mode size converter on a lithium niobate-on-insulator photonic platform. The 3D mode size converter is fabricated using a…
Broadband generation of quasi bound-state-in-continuum modes using subwavelength truncated cone resonators
Chun-Ho Lee, Mohamad Reza Nurrahman, Dongha Kim +3
Allowing a high quality factor (Q-factor) to a sub-wavelength dielectric resonator, quasi-bound states in the continuum (Q-BIC) has gained much interest. However, the Q-BIC resonan…
Customising radiative decay dynamics of two-dimensional excitons via position- and polarisation-dependent vacuum-field interference
Sanghyeok Park, Dongha Kim, Yun-Seok Choi +8
Embodying bosonic and electrically interactive characteristics in two-dimensional space, excitons in transition-metal dichalcogenides (TMDCs) have garnered considerable attention.…