Abstract

We report an analysis of one-dimensional rod-based photonic crystal nanocavities. These cavities offer opportunities for dielectric materials which lack a matching low-refractive index substrate or are limited in under-etching possibilities to create slab-based PhC cavities. They offer high theoretical ${Q}$-values exceeding ${{10}^6}$ for transverse magnetic polarized modes with modal volumes below ${2.5}\;{(\lambda /n)^3}$. For practical implementations, we propose embedding these structures in a low-refractive index polymer. An analysis of intentionally introduced variations in a rod diameter reveals which design directions should be followed in order to create cavities that are most robust for fabrication-induced variations.

© 2021 Optical Society of America

Design of nanowire-induced nanocavities in photonic crystal disks

Sylvain Sergent, Hideaki Taniyama, and Masaya Notomi
Opt. Lett. 42(24) 5121-5124 (2017)

Ultrahigh-Q Nanocavity with 1D Photonic Gap

M. Notomi, E. Kuramochi, and H. Taniyama
Opt. Express 16(15) 11095-11102 (2008)

Dynamic tuning of the Q factor in a photonic crystal nanocavity through photonic transitions

Bo Wang, Jun-Fang Wu, Chao Li, and Zhi-Yuan Li
Opt. Lett. 43(16) 3945-3948 (2018)

Simulations of high-Q optical nanocavities with a gradual 1D bandgap

Bjorn Maes, Jiří Petráček, Sven Burger, Pavel Kwiecien, Jaroslav Luksch, and Ivan Richter
Opt. Express 21(6) 6794-6806 (2013)

High-Q design of semiconductor-based ultrasmall photonic crystal nanocavity

Masahiro Nomura, Katsuaki Tanabe, Satoshi Iwamoto, and Yasuhiko Arakawa
Opt. Express 18(8) 8144-8150 (2010)