Absorption of ultrashort intense lasers in laser–solid interactions

With the advent of ultrashort high intensity laser pulses, laser absorption during the laser–solid interactions has received significant attention over the last two decades since it is related to a variety of applications of high intensity lasers,including the hot electron production for fast igniti...

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Published inChinese physics B Vol. 24; no. 1; pp. 52 - 65
Main Author 盛政明 翁苏明 於陆勒 王伟民 崔云千 陈民 张杰
Format Journal Article
LanguageEnglish
Published 2015
Subjects
High intensity lasers
Hot electrons
Ignition
Lasers
Nanostructure
Neutron sources
Simulation
X-rays
吸收机制
快速点火
激光吸收
相互作用
超短强激光
超短激光脉冲
高强度激光
高能量密度
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ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/24/1/015201

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Summary:With the advent of ultrashort high intensity laser pulses, laser absorption during the laser–solid interactions has received significant attention over the last two decades since it is related to a variety of applications of high intensity lasers,including the hot electron production for fast ignition of fusion targets, table-top bright X-ray and gamma-ray sources,ion acceleration, compact neutron sources, and generally the creation of high energy density matters. Normally, some absorption mechanisms found for nanosecond long laser pulses also appear for ultrashort laser pulses. The peculiar aspects with ultrashort laser pulses are that their absorption depends significantly on the preplasma condition and the initial target structures. Meanwhile, relativistic nonlinearity and ponderomotive force associated with the laser pulses lead to new mechanisms or phenomena, which are usually not found with nanosecond long pulses. In this paper, we present an overview of the recent progress on the major absorption mechanisms in intense laser–solid interactions, where emphasis is paid to our related theory and simulation studies.
Bibliography:laser absorption; laser–solid interaction; relativistic high intensity; electron heating and acceleration
Sheng Zheng-Ming,Weng Su-Ming,Yu Lu-Le,Wang Wei-Min,Cui Yun-Qian,Chen Min,Zhang Jie（ 1. Key Laboratory for Laser Plasmas （MoE） and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China ;2. SUPA, Department of Physics, University of Strathclyde, Glasgow G40NG, UK ;3.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China）
11-5639/O4
With the advent of ultrashort high intensity laser pulses, laser absorption during the laser–solid interactions has received significant attention over the last two decades since it is related to a variety of applications of high intensity lasers,including the hot electron production for fast ignition of fusion targets, table-top bright X-ray and gamma-ray sources,ion acceleration, compact neutron sources, and generally the creation of high energy density matters. Normally, some absorption mechanisms found for nanosecond long laser pulses also appear for ultrashort laser pulses. The peculiar aspects with ultrashort laser pulses are that their absorption depends significantly on the preplasma condition and the initial target structures. Meanwhile, relativistic nonlinearity and ponderomotive force associated with the laser pulses lead to new mechanisms or phenomena, which are usually not found with nanosecond long pulses. In this paper, we present an overview of the recent progress on the major absorption mechanisms in intense laser–solid interactions, where emphasis is paid to our related theory and simulation studies.
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ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/1/015201