Presentation Information
[9p-N221-10]Fabrication and characterization of high-Q moiré photonic crystal nanocavities based on stacked nanobeams
〇Takahiro Ito1, Akinari Fujita1, Shuma Ito1, Stepan Trushin1, Jinkwan Kwoen3, Masahiro Kakuda3, Yasuhiko Arakawa3, Satoshi Iwamoto2, Yasutomo Ota1 (1.Keio Univ., 2.RCAST, Tokyo Univ., 3.NanoQuine)
Keywords:
moire superlattiice structure,nanobeam cavity
Flatband light localization in moiré photonic crystals (PhCs) is attracting attention as an approach for realizing reconfigurable, high Q factor optical microcavities. However, experimental demonstrations of high-Q moiré microcavities have been limited to superimposed structures where two periodic patterns are introduced into a single layer; no high-Q microcavity structure based on stacked moiré PhCs has yet been reported.
Previously, we reported on the design of a one-dimensional (1D) moiré PhC resonator with a high Q-factor ($\sim 10^5$) and a tunable resonant position, using a GaAs/Si hetero-stacked nanobeam PhC. In this work, as a preliminary investigation, we have fabricated a 1D moiré PhC based on a stacked GaAs nanobeam structure using a transfer printing method and now report on its optical characterization.
Previously, we reported on the design of a one-dimensional (1D) moiré PhC resonator with a high Q-factor ($\sim 10^5$) and a tunable resonant position, using a GaAs/Si hetero-stacked nanobeam PhC. In this work, as a preliminary investigation, we have fabricated a 1D moiré PhC based on a stacked GaAs nanobeam structure using a transfer printing method and now report on its optical characterization.