摘要
高次谐波产生(High-order Harmonic Generation,HHG)使激光脉冲脉宽突破到阿秒量级成为可能。2001年第一次在实验上利用高次谐波产生的方法获得了650as的脉冲,揭开了阿秒时代的序幕。根据介质的不同大致可以分为气体高次谐波、固体体材料高次谐波和固体等离子体高次谐波。气体高次谐波经过了二十多年已经发展得很成熟,并能通过气体高次谐波获得最短43as的脉冲。固体体材料高次谐波和固体等离子体高次谐波因为转化效率高、光子能量高等独特优势已经成为产生阿秒脉冲的研究热点。本文主要介绍了高次谐波的发展历史,气体高次谐波、固体体材料高次谐波和固体等离子体高次谐波的发展现状以及阿秒脉冲测量和表征技术的发展,并对未来的发展趋势进行了总结展望。
High-order Harmonic Generation(HHG)makes it possible to break the pulse width of laser pulses to the attosecond level.In 2001,it was the first time in the experiment to obtain a 650as pulse using the method of high-order harmonic generation,which opened the prelude to the attosecond era.According to the different media,it can be roughly divided into gas high-order harmonics,solid high-order harmonics and plasma high-order harmonics.Gas high-order harmonics have developed maturely after more than 20 years,and the shortest 43as pulse can be obtained through gas high-order harmonics.The high-order harmonics of solid materials and plasmas have become the research hotspots in the generation of attosecond pulses because of their unique advantages such as high conversion efficiency and high photon energy.This article mainly introduces the development history of high-order harmonics,the development status of gas high-order harmonics,solid material high-order harmonics,and plasma high-order harmonics,as well as the development of attosecond pulse measurement and characterization technology,as well as the future development trend is summarized and forecasted.
作者
李林骏
谢兴龙
LI Lin-jun;XIE Xing-long(Key Laboratory of High Power Laser and Physics,Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《安徽师范大学学报（自然科学版）》
2021年第4期307-314,共8页
Journal of Anhui Normal University(Natural Science)
基金
国家自然科学基金项目(12074399)
中国科学院国际合作项目(29201631251100101)
上海市自然科学基金项目(20ZR1464400).
关键词
阿秒脉冲
高次谐波
阿秒测量和表征
attosecond pulse
high-order harmonic generation
attosecond measurement and characterization
