Field-effect Self-mixing Terahertz Detectors

1. Auflage 2016
ISBN: 978-3-662-48679-5
Verlag: Springer

Buch, Englisch, 126 Seiten, Format (B × H): 160 mm x 241 mm, Gewicht: 3435 g

Reihe: Springer Theses

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 anddevice 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.

Zielgruppe

Research

Autoren/Hrsg.

Sun, Jiandong

Fachgebiete

• Technische Wissenschaften Elektronik | Nachrichtentechnik Nachrichten- und Kommunikationstechnik
• Technische Wissenschaften Elektronik | Nachrichtentechnik Elektronik Bauelemente, Schaltkreise
• Technische Wissenschaften Elektronik | Nachrichtentechnik Elektronik Mikrowellentechnik

Inhaltsverzeichnis

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.

Über Autor(innen)

Jiandong Sun’s research focuses on exploring terahertz detectors and sources based on low-dimensional plasma wave. In his Ph. D thesis, he developed high-sensitivity terahertz detectors based on the self-mixing effect in gate-controlled two-dimensional electron systems at room temperature. Terahertz antennas and Schottky gates are integrated with the two-dimensional electron gas for manipulating both the localized terahertz field and the field-effect electron channel. The underlying self-mixing properties are uncovered through the transport measurement and simulations. The device model and the characterization techniques he developed in the thesis could be applied for further detector optimization for future real applications.

honors:
1) American Superconductor Corp (AMSC) Award (2012).
2) Nominated by Chinese Academy of Sciences for an outstanding Ph.D. thesis (2013)
3) Honor roll student of Chinese Academy of Sciences (2010)
4) Honor roll student of Chinese Academy of Sciences (2011)

Publications:
[1] J. D. Sun, Y. F. Sun, D. M. Wu, Y. Cai, H. Qin and B. S. Zhang. Highresponsivity, low-noise, room-temperature, self-mixing terahertz detector realized using floating antennas on a GaN-based field-effect transistor, Appl. Phys. Lett. 100, 013506 (2012).
[2] J. D. Sun, H. Qin, R. A. Lewis, Y. F. Sun, X. Y. Zhang, Y. Cai, D. M. Wu, and B. S. Zhang. Probing of localized terahertz self-mixing in a GaN/AlGaN field-effect transistor, Appl. Phys. Lett. 100, 173513 (2012).
[3] Y. F. Sun, J. D. Sun, Y. Zhou, R. B. Tan, C. H. Zeng, W. Xue, H. Qin, B. S. Zhang, and D. M. Wu. Room temperature GaN/AlGaN self-mixing terahertz detector enhanced by resonant antennas, Appl. Phys. Lett. 98, 252103 (2011).
[4] J. D. Sun, Y. F. Sun, Y. Zhou, Z. P. Zhang, W. K. Lin, C. H. Zen, D. M. Wu, B. S. Zhang, H.Qin. A Terahertz detector Based on GaN/AlGaN High Electron Mobility Transistor with Bowtie, AIP Conf. Proc ,  1399, 893 (2011); 30th International Conference on the Physics of Semiconductors (ICPS) 2010 
[5] R. B. Tan, H. Qin, J. D. Sun, X. Y. Zhang, and B. S. Zhang. Modeling an antenna-coupled graphene field-effect terahertz detector. Appl. Phys. Lett. 103, 173507 (2013)