Presentation Information
[9p-A13-3]Noise-Robust Gas Sensing Using Wavelength-Selective Photonic-Crystal Surface-Emitting Quantum Cascade Detectors
〇Rei Hashimoto1, Tsukada Tomoki1, Miyagawa Tetsuya1, Suzuki Lisa1, Kaneko Kei1, Kakuno Tsutomu1, Yamaguchi Shigeru2, Begum Afshan3, Ikeda Naoki3, Mano Takaaki3, Watanabe Keisuke3, Kuroda Takashi3, Sakoda Kazuaki3, Saito Shinji4 (1.Toshiba Corp., 2.Tokai Univ., 3.NIMS, 4.Shonan Inst. Technol.)
Keywords:
Quantum Cascade Detector,Quantum Cascade Laser,Gas Sensing
Mid-infrared gas sensing enables highly sensitive and remote detection, but thermal noise from blackbody radiation has required wavelength filters and cryogenic cooling. In this study, we developed a photonic-crystal quantum cascade detector (PC-QCD) that operates at room temperature without optical filters, providing inherent wavelength and angular selectivity. Gas sensing of N2O was demonstrated, and robustness against external disturbance light was evaluated. The results show that the PC-QCD maintains stable sensing performance even under strong optical interference, demonstrating high disturbance tolerance.