Broadband Terahertz Detection by Laser Plasma with Balanced Optical Bias
Using a controlled optical bias and balanced geometry, we propose a new scheme for broadband terahertz detection by laser-gas interaction without high-voltage manipulation. Compared to the conventional optical bias scheme, the common noise is reduced and the dynamic range as well as the signal-to-no...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/19/7569 |
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| author | Xu Sun Zhi-Hui Lyu Hai-Zhong Wu Cong-Sen Meng Dong-Wen Zhang Zhi-Zhong Lu Xiao-Wei Wang Zeng-Xiu Zhao Jian-Min Yuan |
| author_facet | Xu Sun Zhi-Hui Lyu Hai-Zhong Wu Cong-Sen Meng Dong-Wen Zhang Zhi-Zhong Lu Xiao-Wei Wang Zeng-Xiu Zhao Jian-Min Yuan |
| author_sort | Xu Sun |
| collection | DOAJ |
| description | Using a controlled optical bias and balanced geometry, we propose a new scheme for broadband terahertz detection by laser-gas interaction without high-voltage manipulation. Compared to the conventional optical bias scheme, the common noise is reduced and the dynamic range as well as the signal-to-noise ratio are doubled. It provides a simple alternative for coherent broadband terahertz detection. The influence of optical bias on terahertz waveform is also investigated, and the evolution of the terahertz-induced second harmonic with probe delay is further revealed. This new detection scheme for broadband terahertz will boost the application of terahertz time-domain spectroscopy for its miniaturization and integrability. |
| first_indexed | 2024-03-09T21:09:54Z |
| format | Article |
| id | doaj.art-2d0dade0c4494dbbbc056e84d832f9d7 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T21:09:54Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-2d0dade0c4494dbbbc056e84d832f9d72023-11-23T21:51:16ZengMDPI AGSensors1424-82202022-10-012219756910.3390/s22197569Broadband Terahertz Detection by Laser Plasma with Balanced Optical BiasXu Sun0Zhi-Hui Lyu1Hai-Zhong Wu2Cong-Sen Meng3Dong-Wen Zhang4Zhi-Zhong Lu5Xiao-Wei Wang6Zeng-Xiu Zhao7Jian-Min Yuan8Department of Physics, National University of Defense Technology, Changsha 410073, ChinaDepartment of Physics, National University of Defense Technology, Changsha 410073, ChinaDepartment of Physics, National University of Defense Technology, Changsha 410073, ChinaDepartment of Physics, National University of Defense Technology, Changsha 410073, ChinaDepartment of Physics, National University of Defense Technology, Changsha 410073, ChinaKey Laboratory of Robotics Engineering and Intelligent Manufacturing, Southwest Petroleum University, Nanchong 637001, ChinaDepartment of Physics, National University of Defense Technology, Changsha 410073, ChinaDepartment of Physics, National University of Defense Technology, Changsha 410073, ChinaDepartment of Physics, National University of Defense Technology, Changsha 410073, ChinaUsing a controlled optical bias and balanced geometry, we propose a new scheme for broadband terahertz detection by laser-gas interaction without high-voltage manipulation. Compared to the conventional optical bias scheme, the common noise is reduced and the dynamic range as well as the signal-to-noise ratio are doubled. It provides a simple alternative for coherent broadband terahertz detection. The influence of optical bias on terahertz waveform is also investigated, and the evolution of the terahertz-induced second harmonic with probe delay is further revealed. This new detection scheme for broadband terahertz will boost the application of terahertz time-domain spectroscopy for its miniaturization and integrability.https://www.mdpi.com/1424-8220/22/19/7569broadband terahertz detectionlaser plasmaoptical biasterahertz-induced second harmonic |
| spellingShingle | Xu Sun Zhi-Hui Lyu Hai-Zhong Wu Cong-Sen Meng Dong-Wen Zhang Zhi-Zhong Lu Xiao-Wei Wang Zeng-Xiu Zhao Jian-Min Yuan Broadband Terahertz Detection by Laser Plasma with Balanced Optical Bias Sensors broadband terahertz detection laser plasma optical bias terahertz-induced second harmonic |
| title | Broadband Terahertz Detection by Laser Plasma with Balanced Optical Bias |
| title_full | Broadband Terahertz Detection by Laser Plasma with Balanced Optical Bias |
| title_fullStr | Broadband Terahertz Detection by Laser Plasma with Balanced Optical Bias |
| title_full_unstemmed | Broadband Terahertz Detection by Laser Plasma with Balanced Optical Bias |
| title_short | Broadband Terahertz Detection by Laser Plasma with Balanced Optical Bias |
| title_sort | broadband terahertz detection by laser plasma with balanced optical bias |
| topic | broadband terahertz detection laser plasma optical bias terahertz-induced second harmonic |
| url | https://www.mdpi.com/1424-8220/22/19/7569 |
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