Name
Title | ||
|---|---|---|
Spectral Narrowing Effect Of A Novel Super-Grating Dual-Gate Structure For Plasmon-Resonant Terahertz Emitter |
Abstract | ||
|---|---|---|
We have proposed a terahertz (THz) emitter utilizing two-dimensional plasmons (2DPs) in a super-grating dual-ate (SGG) high electron mobility transistor (HEMT). The plasmon under each grating gate has a unique feature that its resonant frequency is determined by the plasma-wave velocity over the gate length. Since the drain bias voltage causes a linear potential slope from the Source to drain area, the sheet electron densities in periodically distributed 2DP cavities are dispersed. As a result, all the resonant frequencies are dispersed and undesirable spectral broadening Occurs. A SGG structure can compensate for the sheet electron density distribution by modulating the grating dimension. The finite difference time domain simulation confirms its spectral narrowing effect. Within a wide detuning range for the gate and drain bias voltages giving a frequency shifting of +/- 0.5 THz from an optimum condition, the SGG structure can preserve the spectral narrowing effect. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1587/transele.E92.C.696 | IEICE TRANSACTIONS ON ELECTRONICS |
Keywords | Field | DocType |
terahertz, plasmon resonance, emitter, dispersion control, grating dimension | Electron density,Grating,Common emitter,Optics,Electronic engineering,Doppler broadening,Terahertz radiation,Engineering,High-electron-mobility transistor,Plasmon,Biasing | Journal |
Volume | Issue | ISSN |
E92C | 5 | 1745-1353 |
Citations | PageRank | References |
1 | 0.63 | 0 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Takuya Nishimura | 1 | 3 | 3.01 |
| Nobuhiro Magome | 2 | 1 | 0.63 |
| Hyun-Chul Kang | 3 | 211 | 141.92 |
| Tai-ichi Otsuji | 4 | 23 | 13.08 |