[14p-C301-1~9] 4.3 Optical Micro-sensing, Manipulation, and Fabrications

▲ [14p-C301-6] Utilizing Efficient Light - Heat Conversion in Aluminum Perfect Absorbers for Spectrally Selective Infrared Detectors

〇(P)Thang DAO^1,2, Takahiro Yokoyama^1,2, Satoshi Ishii^1,2, Tomomi Sawada^1,2, Kai Chen^1,2, Yoshiki Wada¹, Toshihide Nabatame^1,2, Tadaaki Nagao^1,2,3 (1.International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan, 2.CREST, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan, 3.Department of Condensed Matter Physics, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan)

Keywords:Spectrally selective infrared detector, Plasmonic metamaterials, Perfect absorber

Plasmonic perfect absorbers (PAs), which can exhibit near-unity absorptivity at desired wavelengths, have been widely studied over the past decade with respect to their remarkable optical properties and wide applications. In particular, the PAs operating in the middle-wavelength infrared (MWIR) region have been extensively proposed in photonics and optoelectronics such as wavelength-selective thermal emitters, molecular sensor and selective infrared detector. In this report, by taking advantage of the spectrally-selective and efficient light-heat conversion in the aluminum perfect absorber (AlPA) as a spectrally selective absorbing electrode, combined with a highly c-axis oriented ZnO film crystal, we demonstrate a compact design for wavelength-selective pyroelectric infrared detectors.