| Presentation | 2012-12-17 ED2012-98 Terahertz Population Inversion in Graphene by Optical Pulse Excitation Akira SATOU, Victor RYZHII, Yuki KURITA, Taiichi OTSUJI, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We theoretically studied the nonequilibrium carrier relaxation dynamics and the terahertz population inversion in intrinsic graphene excited by optical pulse. Using the model which takes into account the quasi-equilibration by carrier-carrier scattering, energy relaxation and recombination by optical-phonon emission, and the Pauli blocking of optical pulse absorption, we analyzed the dependence of the achievement of the population inversion on the photon energy of the pulse. It was shown that the threshold pulse fluence required for the population inversion is reduced as the photon energy of the pulse becomes lower, due to the dependence of the photoabsorption by graphene on the photon energy and to the reduction of the carrier heating effect by the photoexcited carriers. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Graphene / Population inversion / THz laser / Optical pumping |
| Paper # | ED2012-98 |
| Date of Issue |
| Conference Information | |
| Committee | ED |
|---|---|
| Conference Date | 2012/12/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Electron Devices (ED) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | ED2012-98 Terahertz Population Inversion in Graphene by Optical Pulse Excitation |
| Sub Title (in English) | |
| Keyword(1) | Graphene |
| Keyword(2) | Population inversion |
| Keyword(3) | THz laser |
| Keyword(4) | Optical pumping |
| 1st Author's Name | Akira SATOU |
| 1st Author's Affiliation | Research Institute of Electrical Communication Tohoku Unviersity() |
| 2nd Author's Name | Victor RYZHII |
| 2nd Author's Affiliation | Research Institute of Electrical Communication Tohoku Unviersity |
| 3rd Author's Name | Yuki KURITA |
| 3rd Author's Affiliation | Research Institute of Electrical Communication Tohoku Unviersity |
| 4th Author's Name | Taiichi OTSUJI |
| 4th Author's Affiliation | Research Institute of Electrical Communication Tohoku Unviersity |
| Date | 2012-12-17 |
| Paper # | ED2012-98 |
| Volume (vol) | vol.112 |
| Number (no) | 364 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |