[23a-1BL-1~10] 3.7 Optical measurement, instrumentation, and sensor (formerly 3.8)

9:35 AM - 9:50 AM JST(12:35 AM - 12:50 AM UTC)

[23a-1BL-3] Broadband (3-20µm) Mid-Infrared Spectral Imaging Device for
Carbon Monoxide Gas Distribution Imaging

〇Hibiki Yano¹, Wei Qi¹, Daichi Anabuki¹, Kenji Wada², Akira Nishiyama², Hiroshi Kanasaki³, Ichiro Ishimaru¹ (1.Faculty of Engineering and DesignKagawa University, 2.Faculty of Medicine, Kagawa University, 3.Innovation Design Institute, Kagawa University)

Keywords:

mid-infrared

A wideband (3-20µm) mid-infrared spectrometer is used to discriminate and measure gas species outdoors. In the case of transmission optics, the measurement wavelength range is limited to 8-14 µm by an antireflection coating. Therefore, we have constructed a broadband (3-20 µm) mid-infrared spectrometer by using a reflective optical system with free-form mirrors1) . In this paper, we report the detection of carbon dioxide gas (CO2: 4.25 µm) against a sunlight background.