High-resolution temporal overlap with proper dispersion compensation for a coherent photocurrent experiment revealed by terahertz time-domain emission spectroscopy  

作　　者：Xueqin Cao Fan Wang Leidong Xing Zeyun Wang Yuanyuan Huang Xinlong Xu 曹雪芹;王凡;邢雷东;王泽芸;黄媛媛;徐新龙(Shaanxi Joint Laboratory of Graphene,State Key Laboratory Incubation Base of Photoelectric Technology and Functional Materials,International Collaborative Center on Photoelectric Technology and Nano Functional Materials,Institute of Photonics&Photon-Technology,Northwest University,Xi’an 710069,China)

机构地区：[1]Shaanxi Joint Laboratory of Graphene,State Key Laboratory Incubation Base of Photoelectric Technology and Functional Materials,International Collaborative Center on Photoelectric Technology and Nano Functional Materials,Institute of Photonics&Photon-Technology,Northwest University,Xi’an 710069,China

出　　处：《Chinese Optics Letters》2024年第11期152-156,共5页中国光学快报(英文版)

基　　金：supported by the National Natural Science Foundation of China (Nos.12261141662,12074311,and 12374315);the Graduate Research Innovation Program of Northwest University (No.CX2024142)。

摘　　要：Coherent control of terahertz(THz) wave radiation with two-color laser excitation requires good temporal overlap with good dispersion control of both the fundamental(ω) and the second harmonic(2ω). Herein, we experimentally determined the temporal overlap of the ω and 2ω pulses in the time-domain, which was corroborated by theoretical calculations.Furthermore, the coherent control of THz radiation of ZnSe also proves the good temporal overlap of two-color femtosecond lasers. This work provides an experimental tool for finding temporal overlap and realizing the dispersion control of two femtosecond lasers.

关 键 词：terahertz time-domain spectroscopy:temporal overlap dispersion control two-color excitation. 

分 类 号：TN2[电子电信—物理电子学]