Photonic Crystal Nanocavities with Extremely Long Photon Lifetimes and Their Applications

Takasumi TANABE; Eiichi KURAMOCHI; Akihiko SHINYA; Hideaki TANIYAMA; Masaya NOTOMI

doi:10.2184/lsj.36.1310

Optical Materials and Optical Devices

Photonic Crystal Nanocavities with Extremely Long Photon Lifetimes and Their Applications

Takasumi TANABE, Eiichi KURAMOCHI, Akihiko SHINYA, Hideaki TANIYAMA, Masaya NOTOMI

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Keywords: Photonic crystal, High-Q nanocavity, Photonic DRAM, Silicon photonics

JOURNAL FREE ACCESS

2008 Volume 36 Issue APLS Pages 1310-1313

DOI https://doi.org/10.2184/lsj.36.1310

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Abstract

Photonic crystal (PhC) nanocavities with ultrahigh Q values are reviewed. The demonstrated Q for a width-modulated PhC nanocavity is extremely high at 1.2×10⁶, which corresponds to a photon lifetime of ~1 ns. In addition, an ultrahigh Q of 3.2×10⁵ is demonstrated using a point defect type hexapole cavity. The extremely long photon lifetime enables us to fabricate devices, such as photonic DRAMs, chip integrated slow light materials, and novel wavelength converters.

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