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<p>The dynamics of frequency chirping during the interaction of Gaussian laser pulses with plasma are essential for optimising terahertz (THz) radiation production. This research examines the impact of critical laser and plasma parameters on the efficiency of THz production. Our research indicates that the efficiency of THz creation diminishes with an increase in the frequency chirp of the laser pulse, underscoring the adverse effect of excessive chirping on energy transfer to THz frequencies. Conversely, higher plasma density improves THz production efficiency, highlighting the significance of plasma as a medium for efficient energy conversion. A greater beam waist diminishes efficiency, highlighting the need for beam focusing on optimising interaction dynamics. These results elucidate the parameter dependence in laser-plasma interactions, providing insights for the design of high-efficiency THz sources.</p>

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Unravelling chirp dynamics in Gaussian laser-plasma interactions for THz wave optimization

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • Jasveer Singh,
  • Sunita Rani,
  • Hitesh Kumar Midha,
  • Vivek Sharma,
  • Vishal Thakur

摘要

The dynamics of frequency chirping during the interaction of Gaussian laser pulses with plasma are essential for optimising terahertz (THz) radiation production. This research examines the impact of critical laser and plasma parameters on the efficiency of THz production. Our research indicates that the efficiency of THz creation diminishes with an increase in the frequency chirp of the laser pulse, underscoring the adverse effect of excessive chirping on energy transfer to THz frequencies. Conversely, higher plasma density improves THz production efficiency, highlighting the significance of plasma as a medium for efficient energy conversion. A greater beam waist diminishes efficiency, highlighting the need for beam focusing on optimising interaction dynamics. These results elucidate the parameter dependence in laser-plasma interactions, providing insights for the design of high-efficiency THz sources.