Single-wavelength size focusing of ultra-intense ultrashort lasers with rotational hyperbolic mirrors  

作　　者：Zhaoyang Li Yanqi Liu Xiaoyang Guo Yuxin Leng Ruxin Li 

机构地区：[1]Zhangjiang Laboratory,Shanghai,China [2]Chinese Academy of Sciences,Shanghai Institute of Optics and Fine Mechanics,Key Laboratory of Ultra-intense Laser Science and Technology,Shanghai,China [3]Shenzhen Technology University,College of Engineering Physics,Shenzhen,China [4]ShanghaiTech University,Shanghai,China

出　　处：《Advanced Photonics Nexus》2024年第3期14-20,共7页先进光子学通讯（英文）

基　　金：supported by the National Key R&D Program of China(Grant No.2022YFA1604401);the Shanghai Science and Technology Committee Program(Grant Nos.22560780100 and 23560750200);the National Natural Science Foundation of China(Grant No.61925507)。

摘　　要：Compressing all the energy of a laser pulse into a spatiotemporal focal cube edged by the laser center wavelength will realize the highest intensity of an ultra-intense ultrashort laser,which is called theλ^(3) regime or theλ^(3) laser.Herein,we introduced a rotational hyperbolic mirror—an important rotational conic section mirror with two foci—that is used as a secondary focusing mirror after a rotational parabolic mirror to reduce the focal spot size from several wavelengths to a single wavelength by significantly increasing the focusing angular aperture.Compared with the rotational ellipsoidal mirror,the first focal spot with a high intensity,as well as some unwanted strong-field effects,is avoided.The optimal focusing condition of this method is presented and the enhanced tight focusing for a femtosecond petawatt laser and theλ3 laser is numerically simulated,which can enhance the focused intensities of ultra-intense ultrashort lasers for laser physics.

关 键 词：ultra-intense ultrashort lasers beam focusing focused intensity hyperbolic mirrors. 

分 类 号：TN2[电子电信—物理电子学]