Spatiotemporal Distribution Characterization for Terahertz Waves Generated From Plasma Induced by Two-Color Pulses

Erli Wang; Erli Wang; Yulong Wang; Yulong Wang; Wenfeng Sun; Wenfeng Sun; Xinke Wang; Xinke Wang; Shengfei Feng; Shengfei Feng; Peng Han; Peng Han; Jiasheng Ye; Jiasheng Ye; Yan Zhang; Yan Zhang

doi:10.3389/fphy.2021.768186

Frontiers in Physics (Oct 2021)

Spatiotemporal Distribution Characterization for Terahertz Waves Generated From Plasma Induced by Two-Color Pulses

Erli Wang,
Erli Wang,
Yulong Wang,
Yulong Wang,
Wenfeng Sun,
Wenfeng Sun,
Xinke Wang,
Xinke Wang,
Shengfei Feng,
Shengfei Feng,
Peng Han,
Peng Han,
Jiasheng Ye,
Jiasheng Ye,
Yan Zhang,
Yan Zhang

Affiliations

Erli Wang: Department of Physics, Capital Normal University, Beijing, China
Erli Wang: Beijing Key Lab for Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics Ministry of Education, Beijing, China
Yulong Wang: Nanophotonics Research Center, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology, Shenzhen University, Shenzhen, China
Yulong Wang: Songshan Lake Materials Laboratory, Dongguan, China
Wenfeng Sun: Department of Physics, Capital Normal University, Beijing, China
Wenfeng Sun: Beijing Key Lab for Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics Ministry of Education, Beijing, China
Xinke Wang: Department of Physics, Capital Normal University, Beijing, China
Xinke Wang: Beijing Key Lab for Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics Ministry of Education, Beijing, China
Shengfei Feng: Department of Physics, Capital Normal University, Beijing, China
Shengfei Feng: Beijing Key Lab for Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics Ministry of Education, Beijing, China
Peng Han: Department of Physics, Capital Normal University, Beijing, China
Peng Han: Beijing Key Lab for Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics Ministry of Education, Beijing, China
Jiasheng Ye: Department of Physics, Capital Normal University, Beijing, China
Jiasheng Ye: Beijing Key Lab for Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics Ministry of Education, Beijing, China
Yan Zhang: Department of Physics, Capital Normal University, Beijing, China
Yan Zhang: Beijing Key Lab for Metamaterials and Devices, Key Laboratory of Terahertz Optoelectronics Ministry of Education, Beijing, China

DOI: https://doi.org/10.3389/fphy.2021.768186
Journal volume & issue: Vol. 9

Abstract

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The spatiotemporal distribution of terahertz (THz) radiation from plasma has been demonstrated with the technology of THz focal-plane imaging. It has been found that the spatiotemporal distribution will vary with the frequency, as well as the length of plasma. A doughnut-shaped distribution appears in the lower frequency range, while the bell-shaped distribution corresponds to the higher frequency range. For plasmas with different lengths, their generated THz images in the time domain are similar, the THz images in the frequency domain as well. The spatiotemporal distributions are simulated with the off-axis-phase matching theory. All the findings will renew the understanding of the THz generation from plasma induced by two-color pulses.

Published in Frontiers in Physics

ISSN: 2296-424X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Science: Physics
Website: https://www.frontiersin.org/journals/physics

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