Single-Shot Spectral-Temporal Ultrafast Photography: Fundamentals, Methods, and Applications

作者：Yu Lu, Yizhao Meng, Fei Yin, Qing Yang, Feng Chen · 发表于：ACS Photonics · 年份：2025 · DOI：10.1021/acsphotonics.5c00135 · 被引用次数：8 · 研究领域：Advanced Optical Sensing Technologies、Advanced Optical Imaging Technologies、Digital Holography and Microscopy

Recent progress in fundamental science and technology requires observing ultrafast dynamics that are extremely difficult to repeat and with increasing spatial-temporal complexity. Correspondingly, ultrafast imaging methods must realize continuous recording with ultrahigh frame rates and numerous frames in a single shot. To overcome this challenge, spectral-temporal ultrafast photography, which uses spectral dimensions of an observing pulse to detect the temporal dimensions of an ultrafast process, has earned excellent performance. This rapid-developing field holds advantages over other single-shot ultrafast imaging methods with nonreciprocal detecting dimensions using unique spectral-temporal reciprocities. Until now, spectral-temporal ultrafast photography has been capable of hundreds of frames in single-shot detection, a detecting window from femtoseconds to nanoseconds, and tens of femtoseconds in temporal resolution. Here, we comprehensively survey the state-of-the-art spectral-temporal ultrafast imaging methods. Two main steps, the generation of the spectral-temporal observing pulse and the restoration of the spectral image sequence, are discussed. Finally, we summarized current methods and envisioned prospects for advancement.