Multiple-frequency generation of sub-terahertz radiation by multimode LD excitation of photoconductive antenna
Multiple-frequency generation of sub-terahertz radiation by multimode LD excitation of photoconductive antenna
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DOI：
10.1109/75.622540
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发表时间：
1997-09-01
期刊：
影响因子：
--
通讯作者：
Hangyo, M
中科院分区：
文献类型：
--
作者：
Tani, M;Matsuura, S;Hangyo, M
利用商用多模激光二极管(LD)激励光导天线，产生了亚太赫兹波段的多频相干辐射，辐射的来源是由LD纵模之间的光拍动引起的光导天线中的电流调制。干涉光谱测量显示，在400 GHz以上52 GHz的倍频处有线谱，这一结果表明，多模LD激励的光导天线可以以非常简单紧凑的器件结构实现亚太赫兹范围内波长可选的相干辐射源。
Multiple-frequency coherent radiation in the sub-terahertz region was generated by excitation of a photoconductive antenna with a commercially available multimode laser diode (LD), The origin of the radiation was the current modulations in the photoconductive antenna caused by the optical beats between the longitudinal modes of the LD. An interferometric spectral measurement showed line spectra at frequency multiples of 52 GHz beyond 400 GHz, This result indicates that the photoconductive antenna with a multimode LD excitation can achieve a wavelength-selectable coherent radiation source in the sub-terahertz region with a very simple and compact device configuration.