[17p-A34-1~17] 3.10 Photonic structures and phenomena

3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)English Presentation

[17p-A34-8] Investigation of flat bands in bilayer one-dimensional moiré photonic crystals with staggered potential (II)

〇(D)Stepan Maksimovich Trushin¹, Yuki Ishii¹, Takahiro Ito¹, Satoshi Iwamoto², Yasutomo Ota¹ (1.Keio Univ., 2.RCAST, Tokyo Univ.)

Keywords:

Photonic crystals,Moire photonics,Nanocavities

Moiré photonic crystals (PhCs) offer novel approaches to control over the flow of light and have shown intriguing phenomena including flat band light localization, which has been utilized for high Q factor nanocavities and nanolasers. Bilayer one-dimensional (1D) PhCs are one of the simplest moiré photonic structures but have been a profound playground for studying high-Q cavity formation in flat bands. However, there has been less discussion on which factors determine Q factor of the localized modes. Previously, we reported flat band light localization in bilayer moiré structures formed by 1D PhCs with double periodic modulation. In this contribution, we study the very similar bilayer moiré PhC and report that the relative lateral shift of the bilayer largely influences on the Q-factor of a flat-band localized mode.