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Emission of terahertz radiation from two-dimensional electron systems in semiconductor nano-heterostructures
| Title: | Emission of terahertz radiation from two-dimensional electron systems in semiconductor nano-heterostructures |
| Other Titles: | Systèmes électroniques bidimensionnels dans des nano-hétérostructures de semi-conducteurs comme sources de rayonnement térahertz |
| Authors: | Otsuji, Taiichi Browse this author | | Karasawa, Hiromi Browse this author | | Watanabe, Takayuki Browse this author | | Suemitsu, Tetsuya Browse this author | | Suemitsu, Maki Browse this author | | Sano, Eiichi Browse this author →KAKEN DB | | Knap, Wojciech Browse this author | | Ryzhii, Victor Browse this author |
| Keywords: | Terahertz emission | | Two-dimensional electrons | | plasmons | | graphene | | heterostructures |
| Issue Date: | Aug-2010 |
| Publisher: | Elsevier Masson SAS |
| Journal Title: | Comptes Rendus Physique |
| Volume: | 11 |
| Issue: | 7-8 |
| Start Page: | 421 |
| End Page: | 432 |
| Publisher DOI: | 10.1016/j.crhy.2010.04.002 |
| Abstract: | This paper reviews recent advances in emission of terahertz radiation from two-dimensional (2D) electron systems in semiconductor nano-heterostructures. 2D plasmon resonance is first presented to demonstrate intense broadband terahertz emission from InGaP/InGaAs/GaAs material systems. The device structure is based on a high-electron mobility transistor and incorporates the author's original interdigitated dual-grating gates. Second topic focuses on graphene, a monolayer carbon-atomic honeycomb lattice crystal, exhibiting unique carrier transport and optical properties owing to massless and gapless energy spectrum. Coherent stimulated terahertz emission from femtosecond infrared-laser pumped epitaxial graphene is experimentally observed, reflecting the occurrence of negative dynamic conductivity and population inversion. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/47504 |
| Appears in Collections: | 量子集積エレクトロニクス研究センター (Research Center for Integrated Quantum Electronics) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 佐野 栄一
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