1. Polarization-dependent fast-electron emission in high-temporal-contrast femtosecond laser plasmas.
- Author
-
Ke, Lintong, Luan, Shixia, Xia, Changquan, Yu, M Y, Feng, Ke, Wang, Jingwei, Xu, Yi, Leng, Yuxin, Wang, Wentao, Li, Ruxin, and Xu, Zhizhan
- Subjects
FEMTOSECOND lasers ,LASER plasmas ,ULTRASHORT laser pulses ,LASER-plasma interactions ,ULTRA-short pulsed lasers ,THRESHOLD energy ,LASER pulses - Abstract
The generation and transport of fast electrons play an important role in intense laser interaction with dense plasma. Here, we experimentally study fast electron generation using a planar aluminum target obliquely irradiated at a large incident angle by an ultrashort high-temporal-contrast relativistic laser pulse. Simulations show that for near-relativistic laser intensities, s-polarized lasers above a certain energy threshold can generate energetic electrons () with a high yield, which is different from the case of low laser contrast. It is also shown that the most energetic electrons are emitted along the target's surface and accelerated to high energies. The key features of the acceleration regimes of lasers with different polarizations are also given. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF