We demonstrate photon-counting single-pixel imaging in the ultraviolet region. Toward this target, we develop a high-performance compact single-photon detector based on a 4H-SiC single-photon avalanche diode (SPAD), where a tailored readout circuit with active hold-off time is designed to restrain detector noise and operate the SPAD in free-running mode. We use structured illumination to reconstruct 192×192 compressed images at a 4 fps frame rate. To show the superior capability of ultraviolet characteristics, we use our single-pixel imaging system to identify and distinguish different transparent objects under low-intensity irradiation, and image ultraviolet light sources. The results provide a practical solution for general ultraviolet imaging applications.
@article{arxiv.2306.16640,
title = {Ultraviolet photon-counting single-pixel imaging},
author = {Jun-Tian Ye and Chao Yu and Wenwen Li and Zheng-Ping Li and Hai Lu and Rong Zhang and Jun Zhang and Feihu Xu and Jian-Wei Pan},
journal= {arXiv preprint arXiv:2306.16640},
year = {2023}
}
Comments
5 pages, 5 figures, accepted for publication in Applied Physics Letters