Open AccessDirect visualization of light confinement and standing wave in THz Fabry-Perot resonator with Bragg mirrors
Author(s) -
Chongpei Pan,
Qiang Wu,
Qi Zhang,
Wenjuan Zhao,
Jiwei Qi,
Jianghong Yao,
Chunyu Zhang,
W. T. Hill,
Jingjun Xu
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.009768
Subject(s) - terahertz radiation , optics , resonator , fabry–pérot interferometer , physics , terahertz spectroscopy and technology , optical cavity , laser
We report for the first time the ability to perform time resolved imaging of terahertz (THz) waves propagating within a Fabry-Perot resonator on a LiNbO 3 slab. Electro-optic effect is used to record the full spatiotemporal evolution of THz fields inside the resonator. In addition to revealing the real-space behavior, the data further demonstrate the confinement and the standing wave modes of THz in the cavity in frequency domain. The experimental results are in good agreement with numerical simulations. Using the coherent imaging technique to gain real-time information about a resonator system provides a unique path to study the physics of optical cavity.