Demonstration Of A Three-Dimensional Photonic Crystal Nanocavity In A < 110 >-Layered Diamond Structure

We experimentally demonstrate a three-dimensional photonic crystal (3D PC) nanocavity in a < 110 >-layered diamond structure with a quality factor (Q-factor) of 12 800 at a wavelength of 1.1 mu m. The observed Q is 1.2 times higher than that of a 3D PC nanocavity in a woodpile structure with the same in-plane size and the same number of stacked layers. This result indicates the potential importance of the < 110 >-layered diamond structure for getting high Q 3D PC nanocavities within a limited in-plane space. (C) 2015 AIP Publishing LLC.