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Book synopsis

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.

Book details

Book category Knihy po anglicky Technology, engineering, agriculture Electronics & communications engineering Electronics engineering

• Full title: Field-effect Self-mixing Terahertz Detectors
• Author: Jiandong Sun
• Language: English
• Binding: Hardback
• Number of pages: 126
• EAN: 9783662486795
• ISBN: 3662486792
• ID: 09545890
• Publisher: Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
• Weight: 3435 g
• Dimensions: 235 × 155 × 12 mm
• Date of publishing: 14. January 2016

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