中国物理快报(英文版)2024，Vol.41Issue(12) ：60-70.DOI:10.1088/0256-307X/41/12/124201

Generation of Circularly Polarized Strong-Field Terahertz Waves

李江皓 熊虹婷 孔德胤 赵蔚鹏 刘少杰 全保刚 吴晓君
中国物理快报(英文版)2024，Vol.41Issue(12) ：60-70.DOI:10.1088/0256-307X/41/12/124201
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Generation of Circularly Polarized Strong-Field Terahertz Waves

李江皓 1熊虹婷 1孔德胤 2赵蔚鹏 1刘少杰 3全保刚 4吴晓君5
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作者信息

  • 1. School of Electronic and Information Engineering,Beihang University,Beijing 100191,China
  • 2. School of Electronic and Information Engineering,Beihang University,Beijing 100191,China;Zhangjiang Laboratory,Shanghai 201210,China
  • 3. Department of Physics,Hong Kong University of Science and Technology,Hong Kong,China
  • 4. Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Material Laboratory,Guangdong 523808,China;University of Chinese Academy of Sciences,Beijing 100049,China
  • 5. School of Electronic and Information Engineering,Beihang University,Beijing 100191,China;Zhangjiang Laboratory,Shanghai 201210,China;Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China;International Terahertz Research Center,Hangzhou International Innovation Institute,Beihang University,Hangzhou 311115,China
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Abstract

Terahertz(THz)circular dichroism(TCD)spectroscopy is extensively used to examine the chiral properties of biological macromolecules and other materials.The rapid advancements in strong-field THz generation and field-modulated techniques highlights the importance of advancing tunable strong-field TCD spectroscopy technology.In this study,we designed and implemented an integrated strong-field TCD spectroscopy system.By using a tilted-pulse-front technique,we generated linearly polarized strong-field THz radiation and achieved linear-to-circular polarization conversion via a reflective metasurface.The resulting circularly polarized THz radiation exhibited an ellipticity greater than 0.9 in the frequency range of 0.38-0.61 THz,achieving a linear-to-circular conversion efficiency exceeding 90％.Additionally,the peak electric field strength of the circularly polarized THz radiation exceeded 100kV/cm.The proposed system is expected to be instrumental in investigating the chiral characteristics of materials under strong field conditions and in examining how these characteristics vary under different field conditions.

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出版年

2024
中国物理快报(英文版)
中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

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影响因子：0.515
ISSN：0256-307X
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