[16a-W9_326-1~10] 3.12 Semiconductor optical devices

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16a-W9_326-5] Evaluation of Incident Light Angle Selectivity and Noise Resilience in Photonic Crystal-Based Quantum Cascade Detectors

〇Tomoki Tsukada¹, Rei Hashimoto¹, Tsutomu Kakuno¹, Masatoshi Hirono¹, Kei Kaneko¹, Lisa Suzuki¹, Tetsuya Miyagawa¹, Afshan Begum², Naoki Ikeda², Takaaki Mano², Keisuke Watanabe², Takashi Kuroda², Kazuaki Sakoda², Sinji Saito³ (1.Toshiba Corp., 2.NIMS, 3.Shonan Inst.)

Keywords:

Quantum Cascade Detector,Photonic Crystal,mid-infrared light

For mid-infrared spectroscopic detection, we developed quantum cascade detector incorporating photonic crystals (PC-QCDs) and demonstrated room-temperature operation. Owing to diffraction by the photonic crystals, only light incident at specific angles is guided into the detection layer, enabling angular selectivity without the use of external filters. In comparison with a conventional MCT detector, the PC-QCD exhibited strong angular selectivity with a full width at half maximum (FWHM) of 0.9°, demonstrating for the first time its capability to reduce background noise from the surroundings.