標題: Sub-THz photonic-transmitters based on separated-transport-recombination photodiodes and a micromachined slot antenna
作者: Li, Yu-Tai
Shi, J.-W.
Pan, Ci-Ling
Chiu, C.-H.
Liu, W.-S.
Chen, Nan-Wei
Sun, C.-K.
Chyi, J.-I.
光電工程學系
Department of Photonics
關鍵字: low-temperature-grown GaAs (LTG-GaAs);photonic transmitter;terahertz (THz)
公開日期: 1-May-2007
摘要: We demonstrate a novel photonic transmitter, which is composed of a low-temperature-grown GaAs (LTG-GaAs)-based separated-transport-recombination photodiode and a micromachined slot antenna. Under femtosecond optical pulse illumination, this device radiates strong electrical pulses (4.5-mW peak power) without the use of a Si-lens. It can be observed in the Fourier transform infrared spectrometer spectrum of radiated pulses that a significant resonance, with a peak power of approximately 300 mu W, occurs at 500 GHz, which corresponds to the designed resonant frequency of the slot antenna. The saturation problem related to the output terahertz power that occurs with the traditional LTG-GaAs-based photonic-transmitters when operated under high external applied electrical fields (> 50 kV/cm) has been eliminated by the use of our device.
URI: http://dx.doi.org/10.1109/LPT.2007.897439
http://hdl.handle.net/11536/10853
ISSN: 1041-1135
DOI: 10.1109/LPT.2007.897439
期刊: IEEE PHOTONICS TECHNOLOGY LETTERS
Volume: 19
Issue: 9-12
起始頁: 840
結束頁: 842
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