Theoretical and experimental study on broadband terahertz atmospheric transmission characteristics |
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| Affiliation: | 1. Institute of Laser and Opto-electronics, College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China;2. Key Laboratory of Opto-electronics Information Technology(Ministry of Education), Tianjin University, Tianjin 300072, China;3. National Key Laboratory of Science and Technology on Millimeter-wave Remote Sensing, Beijing 100039, China |
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| Abstract: | Broadband terahertz (THz) atmospheric transmission characteristics from 0 to 8 THz are theoretically simulated based on a standard Van Vleck-Weisskopf line shape, considering 1696 water absorption lines and 298 oxygen absorption lines. The influences of humidity, temperature, and pressure on the THz atmospheric absorption are analyzed and experimentally verified with a Fourier transform infrared spectrometer (FTIR) system, showing good consistency. The investigation and evaluation on high-frequency atmospheric windows are good supplements to existing data in the low-frequency range and lay the foundation for aircraft-based high-altitude applications of THz communication and radar. |
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| Keywords: | terahertz atmospheric propagation line absorption continuum absorption |
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