Speaker
Description
Precise characterization of the vectorial properties of THz electromagnetic wave packet serves as the essential foundation for materials electromagnetics research and accelerator physics. The complete vectorial properties of THz electromagnetic waves encompass the complex amplitude, the polarization, and the magnetic field characteristics. However, few current methods enable the complete visualization of the THz electromagnetic field.
Here, we develop a method for visualizing the complete THz electromagnetic wave packet. This approach utilizes the electric-optic sampling in conjunction with the high-dimensional one-shot optical field compressive sensing (HOOCS) system [1]. We employ this method to characterize both the 3D homogeneous THz field generated via the optical rectification, and the 3D radially polarized electric field produced by relativistic electron bunch (30MeV at the University of Osaka), consequently permitting the 3D reconstruction of the relativistic electron bunch. This work establishes a novel framework for high-dimensional THz detection, with potential applications in THz ellipsometry and real-time electron dynamics observation.
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