FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Nonlinear Model of Photoconductive Antennas |
LI Liang-Sheng1**, YIN Hong-Cheng1, ZHENG Ning2 |
1Science and Technology on Electromagnetic Scattering Laboratory, Beijing 100854 2School of Physics, Beijing Institute of Technology, Beijing 100081
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Cite this article: |
LI Liang-Sheng, YIN Hong-Cheng, ZHENG Ning 2013 Chin. Phys. Lett. 30 064102 |
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Abstract The terahertz radiations generated through a slab of GaAs-based photoconductive antennas are calculated from the nonlinear model and measured by a time domain spectroscopy system. The calculated spectra for the different pulses are in agreement with our experimental observations. This consistency suggests that the description of the nonlinear model captures the basic features of this photoelectrical terahertz emission mechanism. Furthermore, 1/f background noise dominates the terahertz detection in our experiments when the frequency is larger than 3 THz.
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Received: 25 January 2013
Published: 31 May 2013
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PACS: |
41.60.-m
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(Radiation by moving charges)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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42.72.Ai
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(Infrared sources)
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