title: Two-dimensionally relocatable microfiber-coupled photonic crystal resonator.
abstract: A photonic crystal microresonator is proposed in this study that is relocatable in two dimensions. A wavelength-scale resonator with high Q-factor (26,000) and high collection efficiency (80%) is formed and repositioned by simply placing and relocating a curved-microfiber to a new position on the surface of a two-dimensional square lattice photonic crystal slab. The formation of the resonator was confirmed by observing lasing of resonators. Infrared microscope images showed that the lasing site is two-dimensionally relocated in-situ. Spectral tuning was demonstrated by modifying the curvature of the microfiber. Functionalities, such as the two-dimensional relocation, spectral tuning and efficient extraction, which the curved-microfiber coupling offers, may provide an alternative way of coupling with a single quantum dot.
authors: Department of Physics, KAIST, Daejeon 305-701, Korea. juyoung@kaist.ac.kr
authors: Ju-Young
authors: JY
authors: Kim
authors: Myung-Ki
authors: MK
authors: Kim
authors: Min-Kyo
authors: MK
authors: Seo
authors: Soon-Hong
authors: SH
authors: Kwon
authors: Jong-Hwa
authors: JH
authors: Shin
authors: Yong-Hee
authors: YH
authors: Lee