Abstract

A terahertz beam imaging method was proposed that involves scanning a reflecting echelon with temporal-spatial mapping inversion based on self-developed translation-scan and rotation-scan temporal-spatial mapping (TTSM and RTSM) algorithms. The beam characteristics of a terahertz time-domain spectroscopy (TDS) system, such as its size, shape, and energy distribution, were obtained. Besides the weak terahertz beam emitted from a TDS system, this scheme is also suitable for imaging large-size terahertz or laser beams in time-domain systems where existing beam imaging is impractical.

© 2023 Optica Publishing Group

Spatial mapping of the polarization-resolved spectrum based on vector-beam-assisted nondegenerate four-wave mixing

Xuewen Wang, Jinpeng Yuan, Liantuan Xiao, Suotang Jia, and Lirong Wang
Opt. Lett. 48(2) 303-306 (2023)

Single-shot terahertz pulse characterization via two-dimensional electro-optic imaging with dual echelons

K. Y. Kim, B. Yellampalle, A. J. Taylor, G. Rodriguez, and J. H. Glownia
Opt. Lett. 32(14) 1968-1970 (2007)

Microexplosions in bulk sapphire driven by simultaneously spatially and temporally focused femtosecond laser beams

Weibo Cheng, Zhaohui Wang, Xiaolong Liu, Ya Cheng, and Pavel Polynkin
Opt. Lett. 48(3) 751-754 (2023)

Spatial temporal Fourier single-pixel imaging

Zixin Tang, Tianhang Tang, Jie Chen, Shun Lv, and Yiguang Liu
Opt. Lett. 48(8) 2066-2069 (2023)

High-speed two-dimensional terahertz spectroscopy with echelon-based shot-to-shot balanced detection

Frank Y. Gao, Zhuquan Zhang, Zi-Jie Liu, and Keith A. Nelson
Opt. Lett. 47(14) 3479-3482 (2022)