Field-effect Self-mixing Terahertz Detectors

Released on by Jiandong Sun
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  • Field-effect Self-mixing Terahertz Detectors Book Detail

  • Author : Jiandong Sun
  • Release Date : 2016-01-12
  • Publisher : Springer
  • Genre : Technology & Engineering
  • Pages : 139
  • ISBN 13 : 3662486814
  • File Size : 76,76 MB
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Field-effect Self-mixing Terahertz Detectors by Jiandong Sun PDF Summary

Book Description: 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.

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Handbook of Terahertz Technologies

Handbook of Terahertz Technologies

File Size : 39,39 MB
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Terahertz waves, which lie in the frequency range of 0.1-10 THz, have long been investigated in a few limited fields, such as astronomy, because of a lack of de