EMISSION AND INTENSITY MODULATION OF TERAHERTZ ELECTROMAGNETIC RADIATION UTILIZING 2-DIMENSIONAL PLASMONS IN DUAL-GRATING-GATE HEMT'S
| Autor: | Tetsuya Suemitsu, Eiichi Sano, Taiichi Otsuji, T. Nishimura, Yahya Moubarak Meziani, Yuki Tsuda |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Terahertz gap
Materials science business.industry Terahertz radiation Far-infrared laser Physics::Optics Laser Electronic Optical and Magnetic Materials Terahertz spectroscopy and technology law.invention Photomixing Optics Hardware and Architecture law Optoelectronics Electrical and Electronic Engineering business Terahertz time-domain spectroscopy Plasmon |
| Zdroj: | International Journal of High Speed Electronics and Systems. 19:33-53 |
| ISSN: | 1793-6438 0129-1564 |
| Popis: | Two dimensional plasmons in submicron transistors have attracted much attention due to their nature of promoting emission/detection of electromagnetic radiation in the terahertz range. We have recently proposed and fabricated a highly efficient, broadband plasmon-resonant terahertz emitter. The device incorporates doubly interdigitated grating gates and a vertical cavity into a high electron mobility transistor. The device operates in various modes: (1) DC-current-driven self oscillation, (2) CW-laser excited terahertz emission, (3) two-photon injection-locked difference-frequency terahertz emission, and (4) impulsive laser excited terahertz emission. Furthermore, the device can operate in completely different functionalities including ultrahigh-speed intensity modulation for terahertz carrier waves. This paper reviews recent advances on plasma wave devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|