Author Affiliations
Abstract
1 Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
2 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
It is well-known that the chirped pulse amplification (CPA) technique won the award for the 2018 Nobel Prize in Physics to Mourou and Strickland. The compression and stretching using gratings is the essence of the CPA technique for amplifying femtosecond laser pulses. It seems the public is less aware that there are also other structures for compression and stretching of femtosecond laser pulses using other diffractive gratings, such as doubled-density gratings and deep-etched gratings. Therefore, from the view of diffractive optics, the CPA technique is reviewed with different approaches and experimental implementations that are not only useful for a more comprehensive retrospective overview of CPA, but also for the prospective of the CPA technique, which might lead us to new areas of picometer and femtometer optics in the future.
chirped pulse amplification femtosecond diffractive gratings Chinese Optics Letters
2020, 18(11): 110502
北京交通大学光波技术研究所，全光网与现代通信网教育部重点实验室，北京 100044
通过对光栅电磁理论发展历史的回顾，概述了一维衍射光栅电磁理论的发展历程与现状。通过一维光栅与双周期衍射光栅的结构参数的对比与实例的研究，指出双周期衍射光栅在应用上比一维衍射光栅有更加优越的性能；同时通过两种光栅编程仿真效果也表明：双周期衍射光栅理论的发展还不成熟，不能像一维光栅理论那样，作为研究光栅特性及器件设计的理想工具。最后基于对多种双周期光栅电磁理论的研究对比，总结了双周期光栅理论发展现状以及对以后的展望。
衍射光栅电磁理论 双周期 亚波长 electromagnetic theory of diffractive gratings dual-period subwavelength
