Yong-Seok Choi
KAIST
10 Papers
136 Citations
Yong-Seok Choi is an academic researcher from KAIST. The author has contributed to research in topics: Photonic crystal & Etching (microfabrication). The author has an hindex of 6, co-authored 10 publications. Previous affiliations of Yong-Seok Choi include University of California, Santa Barbara.
Chat about Author
Papers
Visible resonant modes in GaN-based photonic crystal membrane cavities
Cedrik Meier,K. Hennessy,Elaine D. Haberer,Rajat Sharma,Yong-Seok Choi,Kelly McGroddy,Stacia Keller,Steven P. DenBaars,Shuji Nakamura,Evelyn Hu +9 more
TL;DR: In this article, the first fabrication of fully undercut GaN photonic crystal membranes containing an InGaN multiquantum well layer, fabricated using band-gap-selective photoelectrochemical etching, was presented.
60
2.5λ microcavity InGaN light-emitting diodes fabricated by a selective dry-etch thinning process
Yong-Seok Choi,Michael Iza,Elison Matioli,Gregor Koblmüller,James S. Speck,Claude Weisbuch,Evelyn L. Hu +6 more
TL;DR: In this paper, a flip-chip microcavity light-emitting diodes with an effective thickness of ∼450nm at the emission wavelength of ∼415nm are presented.
48
GaN‐based embedded 2D photonic crystal LEDs: Numerical optimization and device characterization
Elison Matioli,Michael Iza,Yong-Seok Choi,Feng Wu,Stacia Keller,Hisashi Masui,Evelyn L. Hu,James S. Speck,Claude Weisbuch,Claude Weisbuch +9 more
TL;DR: In this paper, the numerical optimization of GaN-based embedded 2D-Photonic Crystal (PhC) LEDs based on a full 3D scattering matrix model pointing out the importance of a proper vertical design in embedded PhC structures is shown.
19
Active silicon-based two-dimensional slab photonic crystal structures based on erbium-doped hydrogenated amorphous silicon alloyed with carbon
TL;DR: Two-dimensional (2D) slab photonic crystals based on Er-doped hydrogenated amorphous silicon alloyed with carbon (a-Si:H:C) are proposed and realized in this article.
12
Optical properties of GaN Photonic Crystal Membrane Nanocavities
Yong-Seok Choi,Cedrik Meier,Rajat Sharma,K. Hennessy,Elaine D. Haberer,Y. Gao,Shuji Nakamura,Evelyn L. Hu +7 more
- 30 Aug 2005
TL;DR: L7 photonic-crystal membrane nanocavities with Q factors of 600 have been realized based on the GaN/InGaN material system in this paper, where the authors showed that a L7 nmocavity with high Q factors as high as 5×104 can be achieved.