Chinese Optics Letters, 2019, 17 (6): 062301, Published Online: Jun. 5, 2019
Mode couplings of a semiconductor nanowire scanning across a photonic crystal nanocavity Download: 722次
Abstract
The position-dependent mode couplings between a semiconductor nanowire (NW) and a planar photonic crystal (PPC) nanocavity are studied. By scanning an NW across a PPC nanocavity along the hexagonal lattice’s Γ – M and M – K directions, the variations of resonant wavelengths, quality factors, and mode volumes in both fundamental and second-order resonant modes are calculated, implying optimal configurations for strong mode-NW couplings and light-NW interactions. For the fundamental (second-order) resonant mode, scanning an NW along the M – K (Γ – M) direction is preferred, which supports stronger light-NW interactions with larger NW-position tolerances and higher quality factors simultaneously. The simulation results are confirmed experimentally with good agreements.
Qingchen Yuan, Liang Fang, Qiang Zhao, Yadong Wang, Bo Mao, Vladislav Khayrudinov, Harri Lipsanen, Zhipei Sun, Jianlin Zhao, Xuetao Gan. Mode couplings of a semiconductor nanowire scanning across a photonic crystal nanocavity[J]. Chinese Optics Letters, 2019, 17(6): 062301.