Differential absorption ozone Lidar with 4H-SiC single-photon detectors
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arXiv
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| Format: | Preprint |
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2024
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| author | Zhao, Xian-Song Yu, Chao Wang, Chong Li, Tianyi Liu, Bo Lu, Hai Zhang, Rong Dou, Xiankang Zhang, Jun Pan, Jian-Wei |
| author_facet | Zhao, Xian-Song Yu, Chao Wang, Chong Li, Tianyi Liu, Bo Lu, Hai Zhang, Rong Dou, Xiankang Zhang, Jun Pan, Jian-Wei |
| contents | Differential absorption Lidar (DIAL) in the ultraviolet (UV) region is an effective approach for monitoring tropospheric ozone. 4H-SiC single-photon detectors (SPDs) are emergent devices for UV single-photon detection. Here, we demonstrate a 4H-SiC SPD-based ozone DIAL. We design and fabricate the 4H-SiC single-photon avalanche diode with a beveled mesa structure and optimized layer thickness. An active quenching circuit with a quenching time of 1.03 ns is developed to significantly mitigate the afterpulsing effect while enhancing the maximum count rate. After characterization, the SPD exhibits excellent performance with a photon detection efficiency of 16.6% at 266 nm, a dark count rate of 138 kcps, a maximum count rate of 13 Mcps, and an afterpulse probability of 2.7% at room temperature. Then, we apply two 4H-SiC SPDs in an ozone DIAL. The measured ozone concentrations at altitudes of 1-3.5 km agree well with the results of a commercial ozone DIAL. Our work provides an alternative solution for general UV Lidar applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_04373 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Differential absorption ozone Lidar with 4H-SiC single-photon detectors Zhao, Xian-Song Yu, Chao Wang, Chong Li, Tianyi Liu, Bo Lu, Hai Zhang, Rong Dou, Xiankang Zhang, Jun Pan, Jian-Wei Optics Instrumentation and Detectors Quantum Physics Differential absorption Lidar (DIAL) in the ultraviolet (UV) region is an effective approach for monitoring tropospheric ozone. 4H-SiC single-photon detectors (SPDs) are emergent devices for UV single-photon detection. Here, we demonstrate a 4H-SiC SPD-based ozone DIAL. We design and fabricate the 4H-SiC single-photon avalanche diode with a beveled mesa structure and optimized layer thickness. An active quenching circuit with a quenching time of 1.03 ns is developed to significantly mitigate the afterpulsing effect while enhancing the maximum count rate. After characterization, the SPD exhibits excellent performance with a photon detection efficiency of 16.6% at 266 nm, a dark count rate of 138 kcps, a maximum count rate of 13 Mcps, and an afterpulse probability of 2.7% at room temperature. Then, we apply two 4H-SiC SPDs in an ozone DIAL. The measured ozone concentrations at altitudes of 1-3.5 km agree well with the results of a commercial ozone DIAL. Our work provides an alternative solution for general UV Lidar applications. |
| title | Differential absorption ozone Lidar with 4H-SiC single-photon detectors |
| topic | Optics Instrumentation and Detectors Quantum Physics |
| url | https://arxiv.org/abs/2411.04373 |