Author:
Wang Lei,Qiu Hongsong,Phan Thanh,Kato Kosaku,Kang Boyoung,Takano Keisuke,Lu Yanqing,Chen Lujian,Lv Peng,Yu Kehan,Wei Wei,Jin Biaobing,Nakajima Makoto
Abstract
We demonstrate a new method to detect terahertz (THz) power using a temperature-supersensitive capsulized cholesteric liquid crystal film based on the thermochromic and thermodiffusion effect, which is clearly observed. A quantitative visualization of the THz intensity up to 4.0 × 103 mW/cm2 is presented. The diameter of the color change area is linearly dependent on the THz radiation power above 0.07 mW in the steady state. Moreover, the THz power can be detected for 1 sec of radiation with a parabolic relation to the color change area. The THz power meter is robust, cost-effective, portable, and even flexible, and can be used in applications such as THz imaging, biological sensing, and inspection.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Jiangsu Province
Japan Society for the Promotion of Science
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Cited by
33 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
1. Temperature Dependence of the Conductivity of InSb Measured by Terahertz Time-Domain Spectroscopy;2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz);2023-09-17
2. Observation of Anthracene Crystallization under Irradiation of Terahertz Free-Electron Laser;2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz);2023-09-17
3. Temperature Dependence of the Anisotropic Dielectric Properties of Semiinsulating β-Ga2O3 in the Terahertz Region;2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz);2023-09-17
4. Ultrafast Dynamics of Coulomb Electric Field Contraction by Relativistic Electron Bunch;2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz);2023-09-17
5. Complex Third Order Nonlinear Optical Susceptibility in the Terahertz Region Evaluated by Free-Electron Laser;2023 48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz);2023-09-17