Scholarlink

<p>In the paper for the first time a high-power vortex Bessel beam with a topological charge |<i>l</i>|= 5 have been formed using the phase reflective element and a gyrotron radiation at a frequency of 0.263 THz (wavelength 1.14&#xa0;mm). The reflective element was the spiral phase plate manufactured by micromilling on an aluminum plate. In the experiment, the energy efficiency of converting the beam's Gaussian mode to a Bessel mode was approximately 80%. The reduced value is caused by the imperfection of the gyrotron beam's Gaussian mode and the inaccuracy of the phase element's manufacture. The obtained results demonstrate the potential of using reflective metal phase elements for the efficient generation of vortex Bessel beams and their application in sub-THz communication and photonics systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Formation of High-energy Vortex Bessel Beams Using the Reflective Phase Element in the Sub-THz Range

  • 期刊论文

  • 发表日期：

    2026年8月4日

查看全文
  • N. A. Bazdyrev,
  • V. V. Gerasimov,
  • V. P. Nazmov,
  • V. S. Pavelyev,
  • A. N. Agafonov,
  • A. V. Kirsanov,
  • M. V. Morozkin,
  • A. P. Fokin,
  • A. V. Chirkov

摘要

In the paper for the first time a high-power vortex Bessel beam with a topological charge |l|= 5 have been formed using the phase reflective element and a gyrotron radiation at a frequency of 0.263 THz (wavelength 1.14 mm). The reflective element was the spiral phase plate manufactured by micromilling on an aluminum plate. In the experiment, the energy efficiency of converting the beam's Gaussian mode to a Bessel mode was approximately 80%. The reduced value is caused by the imperfection of the gyrotron beam's Gaussian mode and the inaccuracy of the phase element's manufacture. The obtained results demonstrate the potential of using reflective metal phase elements for the efficient generation of vortex Bessel beams and their application in sub-THz communication and photonics systems.