1. High-harmonic generation from a flat liquid-sheet plasma mirror.
- Author
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Kim, Yang Hwan, Kim, Hyeon, Park, Seong Cheol, Kwon, Yongjin, Yeom, Kyunghoon, Cho, Wosik, Kwon, Taeyong, Yun, Hyeok, Sung, Jae Hee, Lee, Seong Ku, Luu, Tran Trung, Nam, Chang Hee, and Kim, Kyung Taec
- Subjects
ATTOSECOND pulses ,LIGHT sources ,LASER beams ,MIRRORS ,FUSION reactor divertors ,RADIATION - Abstract
High-harmonic radiation can be generated when an ultra-intense laser beam is reflected from an over-dense plasma, known as a plasma mirror. It is considered a promising technique for generating intense attosecond pulses in the extreme ultraviolet and X-ray wavelength ranges. However, a solid target used for the formation of the over-dense plasma is completely damaged by the interaction. Thus, it is challenging to use a solid target for applications such as time-resolved studies and attosecond streaking experiments that require a large amount of data. Here we demonstrate that high-harmonic radiation can be continuously generated from a liquid plasma mirror in both the coherent wake emission and relativistic oscillating mirror regimes. These results will pave the way for the development of bright, stable, and high-repetition-rate attosecond light sources, which can greatly benefit the study of ultrafast laser-matter interactions. High-harmonic generation (HHG) is a nonlinear process and has been explored with different forms of plasma target. Here the authors report HHG using a liquid plasma mirror as a possible way for the generation of stable and intense attosecond pulses at a high-repetition rate. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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