Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume 39, Issue 3, Pages A89-A93Publisher
Optica Publishing Group
DOI: 10.1364/JOSAB.445568
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Funding
- China Postdoctoral Science Foundation [2019M651768, 2020T130285]
- Natural Science Foundation of Jiangsu Province [BK20211277, BK20212004]
- Fundamental Research Funds for the Central Universities [021014380176, 021314380095]
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In this study, a method for generating broadband terahertz radiation using liquid crystal is proposed, and the relationship between terahertz amplitude, liquid crystal orientation, and pump energy density is investigated. Additionally, an elliptically polarized terahertz wave pattern is observed.
In this study, we propose the generation of broadband terahertz (THz) radiation from a liquid crystal with large birefringence in the THz range, pumped by 800 nm femtosecond laser pulses based on optical rectification. Our measurements revealed that the THz amplitude depends on the orientation of the liquid crystal relative to the polarization of the femtosecond pump. Additionally, it was found that the THz peak intensity is linearly dependent on the pump fluence. Furthermore, an elliptically polarized THz wave pattern was observed. The results may lead to anew type of tunable THz source. (C) 2022 Optica Publishing Group
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