碩士 / 國立交通大學 / 電子研究所 / 106 / We study the absorption characteristics and physic of fishnet-like microcavities in the terahertz regime and implement a terahertz photo-detector with a microcavity-integrated resonant tunneling diode array. We observe the absorbance variation and frequency shift of the resonant peaks with surface geometry of the microcavity theoretically and experimentally. Consistent results allow us to design and implement terahertz narrowband absorbers. In addition, we fabricate two detectors: one with the diode arrays placed at the location with strong electric field inside narrowband absorbers while the other at the location with zero electric field. We find that the first detector can give ~10 times higher current response than the second one. The results show that the microcavities can enhance rectified signal of the diode arrays and improve the performance of the detectors.
| Identifer | oai:union.ndltd.org:TW/106NCTU5428117 |
| Date | January 2018 |
| Creators | 楊承勳 |
| Contributors | 顏順通 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 65 |
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