Field-effect Self-mixing Terahertz Detectors (eBook)

Jiandong Sun (Autor)

eBook Download: PDF

2016 | 1st ed. 2016
XVIII, 126 Seiten
Springer Berlin (Verlag)
9783662486818 (ISBN)

Infos

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.

Inhalt

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.

Produkt-Details

• Erscheint lt. Verlag: 12.1.2016
• Reihe/Serie: Springer Theses
• Reihe/Serie: Springer Theses
• Zusatzinfo: XVIII, 126 p. 84 illus., 4 illus. in color.
• Verlagsort: Berlin
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Physik / Astronomie
• Themenwelt: Technik ► Elektrotechnik / Energietechnik
• Schlagworte: Finite-Difference Time-Domain (FDTD) • GaN/AlGaN Heterostructure • High-Electron-Mobility Transistor (HEMT) • Self-Mixing • Terahertz antenna • terahertz detector • THz Near-Field Optics • Two-Dimensional Electron System (2DES) • Two-Dimensional Plasma Wave
• ISBN-13: 9783662486818 / 9783662486818