Ultraviolet photon-counting single-pixel imaging

Abstract

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$\times$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.

arXiv comment5 pages, 5 figures, accepted for publication in Applied Physics Letters

References in corpus (5)

• Single-pixel 3D imaging with time-based depth resolution
• This is SPIRAL-TAP: Sparse Poisson Intensity Reconstruction ALgorithms - Theory and Practice
• Photon counting compressive depth mapping
• Fully integrated free-running InGaAs/InP single-photon detector for accurate lidar applications
• Free-running 4H-SiC single-photon detector with ultralow afterpulse probability at 266 nm

Cited by in corpus (2)

• Differential absorption ozone Lidar with 4H-SiC single-photon detectors
• Miniaturized time-correlated single-photon counting module for time-of-flight non-line-of-sight imaging applications