Two-dimensionally relocatable microfiber-coupled photonic crystal resonator.
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.
Kim
Ju-Young
JY
Department of Physics, KAIST, Daejeon 305-701, Korea. juyoung@kaist.ac.kr
Kim
Myung-Ki
MK
Seo
Min-Kyo
MK
Kwon
Soon-Hong
SH
Shin
Jong-Hwa
JH
Lee
Yong-Hee
YH