By Jiandong Sun
A finished machine version contemplating either spatial distributions of the terahertz box and the field-effect self-mixing issue has been developed for the 1st time within the thesis. the writer has came across that it's the strongly localized terahertz box precipitated in a small fraction of the gated electron channel that performs an incredible position within the excessive responsivity. An AlGaN/GaN-based high-electron-mobility transistor with a 2-micron-sized gate and built-in dipole antennas has been built and will supply a noise-equivalent strength as little as forty pW/Hz1/2 at 900 GHz. by way of additional lowering the gate size right down to 0.2 micron, a noise-equivalent energy of 6 pW/Hz1/2 has been accomplished. This thesis presents particular experimental strategies and machine simulation for revealing the self-mixing mechanism together with a scanning probe process for comparing the effectiveness of terahertz antennas. As such, the thesis may be served as a worthwhile advent in the direction of extra improvement of high-sensitivity field-effect terahertz detectors for useful applications.
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Example text
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