光学
激光器
超短脉冲
物理
窄带
太赫兹辐射
迈克尔逊干涉仪
干涉测量
飞秒脉冲整形
节拍(声学)
材料科学
作者
Xiaoyue ZHOU,Lin Yang,Yi‐Hsin Chan,Fang Deng,Jingdi Zhang
出处
期刊:Optics Letters
[The Optical Society]
日期:2023-05-22
卷期号:48 (11): 2881-2881
被引量:1
摘要
We report on the proof-of-principle experiment of generating carrier-envelope phase (CEP)-controllable and frequency-tunable narrowband terahertz (THz) radiation from an air-plasma filament prescribed by the beat of a temporally stretched two-color laser pulse sequence. The pulse sequence was prepared by propagating the fundamental ultrafast laser pulse through a grating stretcher and Michelson interferometer with variable inter-arm delay. By partially frequency-doubling and focusing the pulse sequence, an air-plasma filament riding a beat note was created to radiate a THz wave with primary pulse characteristics (center frequency and CEP) under coherent control. To reproduce experimental results and elucidate complex nonlinear light–matter interaction, numerical simulation has been performed. This work demonstrates the feasibility of generating coherently controlled narrowband THz wave with high tunability in laser-induced air plasma.
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