TY - JOUR AU - 이광걸 DA - 2015/06 PY - 2015 UR - http://aip.scitation.org/doi/abs/10.1063/1.4919757 UR - http://hdl.handle.net/20.500.11754/25601 AB - We numerically analyze the characteristics of a nanocavity in surface plasmon polariton (SPP) modes confined by total external reflection (TER) at deep subwavelength scales. This SPP-TER cavity consists of a low-index dielectric channel on a flat metal surface covered by a high-index gain medium. Compared to other types of nanocavities formed by total internal reflection such as a metallic channel and a high-index dielectric channel, an SPP-TER nanocavity provides superior functionality on mode area, confinement factor in the gain medium, Q-factor, and threshold gain. From this result, we suggest the SPP-TER nanocavity as a promising high-quality deep-subwavelength scale resonator, which is an essential ingredient in nanophotonics. (C) 2015 AIP Publishing LLC. PB - AMER INST PHYSICS KW - WAVE-GUIDES KW - METAL-FILMS KW - PROPAGATION KW - CONFINEMENT KW - PHOTOLUMINESCENCE KW - ABSORPTION KW - LASERS KW - SCALE KW - ZNSE TI - A deep subwavelength cavity formed by total external reflection of surface plasmon polariton IS - 17 VL - 117 DO - 10.1063/1.4919757 T2 - JOURNAL OF APPLIED PHYSICS ER -