Mid-infrared germanium photonic crystal cavity
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AbstractThe mid-infrared (MIR) spectral range holds significant potential for spectroscopic and sensing applications because it encompasses the fingerprint region that unveils the vibrational and rotational signatures of molecules. CMOS-compatible on-chip devices that can achieve strong light-matter interaction in the entire fingerprint region are considered a promising way for such applications, but remain unprecedented. Here we present an on-chip MIR germanium photonic crystal cavity that covers the entire fingerprint region. This is made possible by harnessing a homemade air-cladding germanium platform. Our MIR device creates a new avenue toward integrated nonlinear optics and on-chip biochemical sensing in the fingerprint region.
All Author(s) ListTing-Hui Xiao, Ziqiang Zhao, Wen Zhou, Mitsuru Takenaka, Hon Ki Tsang, Zhenzhou Cheng, Keisuke Goda
Journal nameOptics Letters
Volume Number42
Issue Number15
PublisherOptical Society of America
Pages2882 - 2885
LanguagesEnglish-United States
KeywordsPhotonic Crystal, Mid Infrared Photonics

Last updated on 2020-13-08 at 04:00