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<p>This study investigates the efficient acceleration of electrons in a vacuum utilizing a linearly chirped Hermite-Sinh-Gaussian (HSG) laser beam, focusing on key parameters influencing electron energy acquisition. The findings indicate that an increase in the Hermite polynomial mode index or the decentered parameter of the Sinh function leads to a substantial enhancement in electron energy. A comparable trend is observed with the expansion of the beam waist and the amplification of the laser electric field amplitude. The influence of frequency chirping exhibits a dual nature: a positive frequency chirp results in a reduction of electron energy, whereas a negative frequency chirp significantly enhances energy gain. The combined effect of these parameters facilitates an increase in electron energy from 0.25&#xa0;MeV to 3738.3&#xa0;MeV. These results offer valuable insights into the optimization of HSG laser parameters for improving electron acceleration efficiency, with significant implications for advanced laser-driven particle acceleration applications.</p>

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Efficient electron acceleration with linear chirped Hermite-Sinh-Gaussian laser beam

  • 期刊论文

  • 发表日期：

    2025年2月13日

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  • Vivek Sharma,
  • Vishal Thakur

摘要

This study investigates the efficient acceleration of electrons in a vacuum utilizing a linearly chirped Hermite-Sinh-Gaussian (HSG) laser beam, focusing on key parameters influencing electron energy acquisition. The findings indicate that an increase in the Hermite polynomial mode index or the decentered parameter of the Sinh function leads to a substantial enhancement in electron energy. A comparable trend is observed with the expansion of the beam waist and the amplification of the laser electric field amplitude. The influence of frequency chirping exhibits a dual nature: a positive frequency chirp results in a reduction of electron energy, whereas a negative frequency chirp significantly enhances energy gain. The combined effect of these parameters facilitates an increase in electron energy from 0.25 MeV to 3738.3 MeV. These results offer valuable insights into the optimization of HSG laser parameters for improving electron acceleration efficiency, with significant implications for advanced laser-driven particle acceleration applications.