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Journal Article Epublish 40 citations

PubMed: 35915072 DOI: 10.1038/s41377-022-00935-0

Single-shot compressed optical field topography.

Light Sci Appl 11(1):244

Authors: Haocheng Tang, Ting Men, Xianglei Liu, Yaodan Hu, Jingqin Su, Yanlei Zuo, Ping Li, Jinyang Liang, Michael C Downer, Zhengyan Li

Affiliations

  • School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China.
  • Centre Énergie Matériaux Télécommunications, Institut National de la Recherche Scientifique, Université du Québec, Varennes, Québec, Canada.
  • Laser Fusion Research Center, Chinese Academy of Engineering Physics, Mianyang, Sichuan, China.
  • Department of Physics, University of Texas at Austin, Austin, TX, USA.
  • School of Optical and Electronic Information & Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei, China. Optics Valley Laboratory, Wuhan, Hubei, China.

Abstract

Femtosecond lasers are powerful in studying matter's ultrafast dynamics within femtosecond to attosecond time scales. Drawing a three-dimensional (3D) topological map of the optical field of a femtosecond laser pulse including its spatiotemporal amplitude and phase distributions, allows one to predict and understand the underlying physics of light interaction with matter, whose spatially resolved transient dielectric function experiences ultrafast evolution. However, such a task is technically challenging for two reasons: first, one has to capture in single-shot and squeeze the 3D information of an optical field profile into a two-dimensional (2D) detector; second, typical detectors are only sensitive to intensity or amplitude information rather than phase. Here we have demonstrated compressed optical field topography (COFT) drawing a 3D map for an ultrafast optical field in single-shot, by combining the coded aperture snapshot spectral imaging (CASSI) technique with a global 3D phase retrieval procedure. COFT can, in single-shot, fully characterize the spatiotemporal coupling of a femtosecond laser pulse, and live stream the light-speed propagation of an air plasma ionization front, unveiling its potential applications in ultrafast sciences.

MeSH

Pulse, Lasers

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