利用相关频率梳和空间场合成时空波包。

Synthesis of space-time wave packets using correlated frequency comb and spatial field.

作者信息

Willner Alan E, Su Xinzhou, Zuo Yue, Wang Yingning, Jiang Zile, Minoofar Amir, Lian Hongkun, Zhao Zixun, Alhaddad Abdulrahman, Zeng Ruoyu

机构信息

Department of Electrical and Computer Engineering and Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA.

Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA 90089, USA.

出版信息

Nanophotonics. 2025 Mar 21;14(6):659-675. doi: 10.1515/nanoph-2024-0771. eCollection 2025 Apr.

DOI:10.1515/nanoph-2024-0771

PMID:40182786

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11964142/

Abstract

Shaping transverse degrees of freedom across different temporal frequency spectra has unlocked new possibilities for realizing a wide variety of novel spatiotemporal phenomena. In particular, using the discrete frequencies of optical frequency combs for spatiotemporal synthesis enables precise spatial separation and control of individual spectral lines, thereby facilitating the experimental generation of space-time wave packets (STWPs). This review explores the theoretical investigation and experimental demonstration of versatile STWPs synthesized using correlated frequency comb lines and spatial fields, including the following: (a) STWPs exhibiting dynamic evolution of spatial properties; (b) STWPs with customized group velocities; and (c) longitudinal control over the dynamic evolution of STWPs.

摘要

塑造不同时间频谱上的横向自由度为实现各种新颖的时空现象开辟了新的可能性。特别是，利用光学频率梳的离散频率进行时空合成，可以实现各条谱线的精确空间分离和控制，从而便于通过实验产生时空波包（STWP）。本综述探讨了利用相关频率梳线和空间场合成的通用STWP的理论研究和实验演示，包括以下内容：（a）表现出空间特性动态演化的STWP；（b）具有定制群速度的STWP；以及（c）对STWP动态演化的纵向控制。