Field-effect Self-mixing Terahertz Detectors

byJiandong Sun

Paperback | March 30, 2018

Field-effect Self-mixing Terahertz Detectors by Jiandong Sun
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A comprehensive device model considering both spatial distributions of the terahertz field and the field-effect self-mixing factor has been constructed for the first time in the thesis. The author has found that it is the strongly localized terahertz field induced in a small fraction of the gated electron channel that plays an important role in the high responsivity. An AlGaN/GaN-based high-electron-mobility transistor with a 2-micron-sized gate and integrated dipole antennas has been developed and can offer a noise-equivalent power as low as 40 pW/Hz1/2 at 900 GHz. By further reducing the gate length down to 0.2 micron, a noise-equivalent power of 6 pW/Hz1/2 has been achieved. This thesis provides detailed experimental techniques and device simulation for revealing the self-mixing mechanism including a scanning probe technique for evaluating the effectiveness of terahertz antennas. As such, the thesis could be served as a valuable introduction towards further development of high-sensitivity field-effect terahertz detectors for practical applications.
Introduction.- Field-Effect Self-Mixing Mechanism and Detector Model.- Realization of Terahertz Self-Mixing Detectors Based on AlGaN/GaN HEMT.- Realization of Resonant Plasmon Excitation and Detection.- Scanning Near-Field Probe for Antenna Characterization.- Applications.- Conclusions and Outlook.
Title:Field-effect Self-mixing Terahertz DetectorsFormat:PaperbackProduct dimensions:126 pages, 23.5 X 15.5 X 0.17 inShipping dimensions:126 pages, 23.5 X 15.5 X 0.17 inPublished:March 30, 2018Publisher:Springer NatureLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:3662569485

ISBN - 13:9783662569481

Appropriate for ages: All ages

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