Single GaAs/AlGaAs nanowire photoconductive terahertz detectors
- Publication Type:
- Conference Proceeding
- 2014 Conference on Optoelectronic and Microelectronic Materials and Devices, COMMAD 2014, 2014, pp. 221 - 222
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© 2014 IEEE. Photoconductive terahertz detectors based on single GaAs/AlGaAs core-shell nanowire have been designed and fabricated. The devices were characterised in a terahertz time-domain spectroscopy system, showing excellent sensitivity comparable to the standard bulk ion-implanted InP receiver, with a detection bandwidth of 0.1 ∼ 0.6 THz. Finite-difference time-domain simulations were performed to understand the origin of the narrow bandwidth of current detectors as well as optimize antenna designs to improve detector performance.
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