Theoretical and experimental progress of high-order harmonics and attosecond pulse generation based on solid overdense plasma

doi:10.1360/TB-2020-0585

	Theoretical and experimental progress of high-order harmonics and attosecond pulse generation based on solid overdense plasma
	Wu, Jiaqi1,2 ; Zeng, Zhinan 2; Li, Ruxin1,2
	2021
发表期刊	科学通报
ISSN	0023-074X
EISSN	2095-9419
卷号	66 期号:8 页码:865-870
DOI	10.1360/TB-2020-0585
摘要	Since the laser was invented, harmonic generation and wavelength conversion have been important research topics in nonlinear optics regime. In 1987, McPherson A et al. used sub-picosecond KrF laser (248 nm wavelength) to interact with noble gas to obtain high-order harmonics for the first time. In 2001, the first single attosecond (10(-18) s) pulse with a pulse width of 650 as was measured experimentally by Krausz et al. by using the broadband high-order harmonic generation. Since then, high-order harmonics and attosecond pulses have been widely used in atomic and molecular physics, materials science and other fields. However, due to the low efficiency of attosecond pulses generated by the gas media, the energy of attosecond pulses is limited, which limits the detection methods of attosecond time dynamics research (currently mainly IR +XUV pumping/detection) and its applications in many fields. How to obtain high-brightness, high-energy attosecond pulses has always been the pursuit in this field since the generation of the first attosecond pulse. With the development of femtosecond laser technology, the output peak power of the femtosecond laser system has been rapidly increased in the past two decades. At present, the laser system can output the pulse with a peak power of up to 10 PW (1 PW=10(15) W). Its intensity can be much higher than 10(18) W/cm(2) and its interaction with the overdense plasma can efficiently generate high-order harmonics at the level of hundreds of eV or even keV, which brings new opportunities for the development and application of high-order harmonics and attosecond pulses. Generally speaking, the interaction of high peak power femtosecond laser pulses with solid-density plasmas has unique advantages in high-luminance, high-energy high-order harmonics and attosecond pulse generation. In the ELI-ALPS plan, solid plasma high-order harmonics and attosecond pulse generation are very important parts, especially to promote their high brightness and their high photon energy. In terms of the attosecond pulse energy, the goal of their first phase is that the attosecond pulse energy reaches the mu J level, which will be advanced to the mJ level in the next phase, and the photon energy of the attosecond pulse will reach a few keV. This review gives a brief introduction to its physical mechanisms and their current experimental research progress. Three mechanisms (coherent wake emission (CWE), relativistic oscillating mirror (ROM), coherent synchrotron emission (CSE)) will be discussed. They are working under different laser intensity. CWE can emit high efficiency harmonics at the laser intensity below 10(18) W/cm(2). But when the peak laser intensity is very high, the research of the CSE mechanism shows the generation of high-luminance high-order harmonics under super-relativistic light intensity, which can be used to produce extremely high field-strength pulse of attoseconds, even tens of zeptoseconds. If the laser parameters and the plasma condition can be well controlled, the laser pulse may even generate higher harmonic radiation with field strength much higher than the pump laser field strength, which may be a possible way to study the 39th question (What is the most powerful laser researchers can build? ) among the 125 most challenging scientific questions published by Science on its 125th anniversary.
关键词	high-order harmonics attosecond pulse relativistic laser plasma
URL	查看原文
收录类别	ESCI ; EI ; 北大核心 ; SCI
语种	中文
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000631645200005
出版者	SCIENCE PRESS
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/127911
专题	物质科学与技术学院_特聘教授组_李儒新组物质科学与技术学院_硕士生
通讯作者	Zeng, Zhinan
作者单位	1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China; 2.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
第一作者单位	物质科学与技术学院
第一作者的第一单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Wu, Jiaqi,Zeng, Zhinan,Li, Ruxin. Theoretical and experimental progress of high-order harmonics and attosecond pulse generation based on solid overdense plasma[J]. 科学通报,2021,66(8):865-870.
APA	Wu, Jiaqi,Zeng, Zhinan,&Li, Ruxin.(2021).Theoretical and experimental progress of high-order harmonics and attosecond pulse generation based on solid overdense plasma.科学通报,66(8),865-870.
MLA	Wu, Jiaqi,et al."Theoretical and experimental progress of high-order harmonics and attosecond pulse generation based on solid overdense plasma".科学通报 66.8(2021):865-870.