0.4 THz Broadband Terahertz Noise Source Based on Photoconductive Antennas
Terahertz noise sources have important application prospects in noise figure measurements. In this paper, a 0.4 THz broadband terahertz noise source based on a photoconductive antenna is proposed. As a demonstration of feasibility, this terahertz noise source is generated by mixing three beams of Ga...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-03-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/12/3/252 |
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| author | Yinwei Chen Feifei Qin Lijuan Liu Zeyu Zhao Pu Li Yuehui Sun Wenjie Liu Yuncai Wang |
| author_facet | Yinwei Chen Feifei Qin Lijuan Liu Zeyu Zhao Pu Li Yuehui Sun Wenjie Liu Yuncai Wang |
| author_sort | Yinwei Chen |
| collection | DOAJ |
| description | Terahertz noise sources have important application prospects in noise figure measurements. In this paper, a 0.4 THz broadband terahertz noise source based on a photoconductive antenna is proposed. As a demonstration of feasibility, this terahertz noise source is generated by mixing three beams of Gaussian-shaped incoherent light. The resulting excess noise ratio (ENR) across different frequency bands is as follows: 20.9 dB, with a flatness of ±7.9 dB in the 75~110 GHz range; 19.3 dB, with a flatness of ±6.2 dB in the 110~170 GHz range; 20.6 dB, with a flatness of ±4.8 dB in the 170~260 GHz range; and 18.7 dB, with a flatness of ±4.3 dB in the 260~400 GHz range. These results demonstrate that the terahertz noise source based on photoconductive antennas that we proposed shows great potential in high-frequency bands and noise figure measurements. |
| format | Article |
| id | doaj-art-84aabd5c658e4b889c8358afd4d9f52d |
| institution | OA Journals |
| issn | 2304-6732 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj-art-84aabd5c658e4b889c8358afd4d9f52d2025-08-20T01:49:01ZengMDPI AGPhotonics2304-67322025-03-0112325210.3390/photonics120302520.4 THz Broadband Terahertz Noise Source Based on Photoconductive AntennasYinwei Chen0Feifei Qin1Lijuan Liu2Zeyu Zhao3Pu Li4Yuehui Sun5Wenjie Liu6Yuncai Wang7Institute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaInstitute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaInstitute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaInstitute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaInstitute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaInstitute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaInstitute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaInstitute of Advanced Photonics Technology, School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, ChinaTerahertz noise sources have important application prospects in noise figure measurements. In this paper, a 0.4 THz broadband terahertz noise source based on a photoconductive antenna is proposed. As a demonstration of feasibility, this terahertz noise source is generated by mixing three beams of Gaussian-shaped incoherent light. The resulting excess noise ratio (ENR) across different frequency bands is as follows: 20.9 dB, with a flatness of ±7.9 dB in the 75~110 GHz range; 19.3 dB, with a flatness of ±6.2 dB in the 110~170 GHz range; 20.6 dB, with a flatness of ±4.8 dB in the 170~260 GHz range; and 18.7 dB, with a flatness of ±4.3 dB in the 260~400 GHz range. These results demonstrate that the terahertz noise source based on photoconductive antennas that we proposed shows great potential in high-frequency bands and noise figure measurements.https://www.mdpi.com/2304-6732/12/3/252noise sourceterahertz-wave noisephotoconductive antenna |
| spellingShingle | Yinwei Chen Feifei Qin Lijuan Liu Zeyu Zhao Pu Li Yuehui Sun Wenjie Liu Yuncai Wang 0.4 THz Broadband Terahertz Noise Source Based on Photoconductive Antennas Photonics noise source terahertz-wave noise photoconductive antenna |
| title | 0.4 THz Broadband Terahertz Noise Source Based on Photoconductive Antennas |
| title_full | 0.4 THz Broadband Terahertz Noise Source Based on Photoconductive Antennas |
| title_fullStr | 0.4 THz Broadband Terahertz Noise Source Based on Photoconductive Antennas |
| title_full_unstemmed | 0.4 THz Broadband Terahertz Noise Source Based on Photoconductive Antennas |
| title_short | 0.4 THz Broadband Terahertz Noise Source Based on Photoconductive Antennas |
| title_sort | 0 4 thz broadband terahertz noise source based on photoconductive antennas |
| topic | noise source terahertz-wave noise photoconductive antenna |
| url | https://www.mdpi.com/2304-6732/12/3/252 |
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