Scholarlink

<p>Efficient generation of high-energy γ-rays from laser–electron interactions is crucial for advancing nuclear photonics and strong-field quantum electrodynamics. However, the energy-conversion efficiency of plasma-mirror-based all-optical inverse Compton scattering has been fundamentally constrained by the limited overlap between the reflected laser pulse and the wakefield-accelerated electron beam. Here we experimentally demonstrate a coated plasma mirror that spontaneously focuses the reflected pulse, which substantially enhances the local field intensity and strongly drives nonlinear multiphoton inverse Compton scattering. Experiments show that the coating improves the laser-to-radiation energy-conversion efficiency by nearly an order of magnitude compared with uncoated mirrors, at the level of 10<sup>−4</sup>–10<sup>−3</sup>, with photon energies extending from tens to hundreds of megaelectronvolts. This simple yet robust approach overcomes the intrinsic energy-utilization limit of plasma-mirror inverse Compton scattering and offers a scalable route towards compact, high-brightness, γ-ray sources for tabletop, strong-field quantum electrodynamics studies and nuclear photonics applications.</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

Enhanced inverse Compton scattering via spontaneous focusing induced by a coated plasma mirror

  • 期刊论文

  • 发表日期：

    2026年7月23日

查看全文
  • Xichen Hu,
  • Mingyang Zhu,
  • Pengpei Xie,
  • Bingjun Li,
  • Huitong Zhai,
  • Bingzhan Shi,
  • Hui Zeng,
  • Tianbing Wang,
  • Yifei Li,
  • Jinguang Wang,
  • Wenchao Yan,
  • Jie Feng,
  • Yanfei Li,
  • Xin Lu,
  • Liming Chen

摘要

Efficient generation of high-energy γ-rays from laser–electron interactions is crucial for advancing nuclear photonics and strong-field quantum electrodynamics. However, the energy-conversion efficiency of plasma-mirror-based all-optical inverse Compton scattering has been fundamentally constrained by the limited overlap between the reflected laser pulse and the wakefield-accelerated electron beam. Here we experimentally demonstrate a coated plasma mirror that spontaneously focuses the reflected pulse, which substantially enhances the local field intensity and strongly drives nonlinear multiphoton inverse Compton scattering. Experiments show that the coating improves the laser-to-radiation energy-conversion efficiency by nearly an order of magnitude compared with uncoated mirrors, at the level of 10−4–10−3, with photon energies extending from tens to hundreds of megaelectronvolts. This simple yet robust approach overcomes the intrinsic energy-utilization limit of plasma-mirror inverse Compton scattering and offers a scalable route towards compact, high-brightness, γ-ray sources for tabletop, strong-field quantum electrodynamics studies and nuclear photonics applications.