Stepan M Trushin, Takahiro Ito, Yuki Ishii, Satoshi Iwamoto, Yasutomo Ota
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引用次数: 0
Abstract
Moiré photonic crystals exhibit a variety of exciting phenomena, including flatband localization. In bilayer moiré photonic crystals, activating flatband localization often requires precise tuning of various structural parameters, which may limit its experimental realization and applications. In this work, we discuss one-dimensional moiré bilayer photonic crystals with staggered potential introduced into each layer. Moiré patterns were formed by slightly differentiating the lattice periods of the top and bottom grating layers, which were double-periodically modulated for introducing the staggered potential. We found that the staggered potential helps in inducing flatband localization in a wider parameter space. We identified the magnitude of the staggered potential as a handy tuning parameter for the manipulation of photonic moiré bands and their wave functions. Our finding here will accelerate the nano-/microcavity formation through moiré physics.
期刊介绍：
The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community.
Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.
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