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Ultrafast quasi-three-dimensional imaging

International Journal of Extreme Manufacturing 2023年第4期5卷 501-512页

作者： Yiling Lian Lan Jiang Jingya Sun Jiadong Zhou Yao Zhou Laser Micro/Nano Fabrication Laboratory School of Mechanical EngineeringBeijing Institute of TechnologyBeijing 100081People’s Republic of China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019People’s Republic of China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120People’s Republic of China Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing 100081People’s Republic of China Advanced Research Institute of Multidisciplinary Sciences Beijing Institute of TechnologyBeijing 100081People’s Republic of China

Understanding laser induced ultrafast processes with complex three-dimensional(3D)geometries and extreme property evolution offers a unique opportunity to explore novel physical phenomena and to overcome the manufacturing *** imaging offers exceptional spatiotemporal resolution and thus has been considered an effective ***,in conventional single-view imaging techniques,3D information is projected on a two-dimensional plane,which leads to significant information loss that is detrimental to understanding the full ultrafast ***,we propose a quasi-3D imaging method to describe the ultrafast process and further analyze spatial asymmetries of laser induced *** polarized laser pulses are adopted to illuminate reflection-transmission views,and binarization techniques are employed to extract contours,forming the corresponding two-dimensional *** rotating and multiplying the two-dimensional contour matrices obtained from the dual views,a quasi-3D image can be *** successfully reveals dual-phase transition mechanisms and elucidates the diffraction phenomena occurring outside the ***,the quasi-3D image confirms the spatial asymmetries of the picosecond plasma,which is difficult to achieve with two-dimensional *** findings demonstrate that quasi-3D imaging not only offers a more comprehensive understanding of plasma dynamics than previous imaging methods,but also has wide potential in revealing various complex ultrafast phenomena in related fields including strong-field physics,fluid dynamics,and cutting-edge manufacturing.

关键词： ultrafast imaging extraction and reconstruction quasi-three-dimension plasma diffraction

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