Enhanced Terahertz Emission from Monolayer Graphene with Metal Mesh Structure
| Autor: | Eiichi Sano, Taro Itatsu, Taiichi Otsuji, Victor Ryzhii, Yuhei Yabe |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science business.industry Graphene Terahertz radiation Amplifier Surface plasmon Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology Laser Population inversion 01 natural sciences Surface plasmon polariton law.invention Terahertz spectroscopy and technology law 0103 physical sciences Optoelectronics 0210 nano-technology business |
| Zdroj: | Materials Today: Proceedings. 3:S221-S226 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2016.02.037 |
| Popis: | The development of compact, low-cost sources and detectors operating at room temperature is needed to fully use terahertz (THz) electromagnetic waves in a variety of applications. Photo-excited graphene is expected to exhibit population inversion and enable the fabrication of a novel THz laser. We previously proposed a THz amplifier as a basic element in a THz laser by combining the population inversion in photo-excited graphene with the electric field enhancement due to the spoof surface plasmon polaritons induced on the surface of a metal mesh structure. For this work, we fabricated prototype THz amplifiers composed of chemical-vapor-deposition-grown graphene and a metal mesh structure and observed extremely amplified THz emission by using an electro-optic sampling method. |
| Databáze: | OpenAIRE |
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