Abstract
This paper presents the experimental studies of the generation of terahertz radiation in periodic arrays of GaAs/AlGaAs core/shell nanowires via excitation by ultrashort optical pulses. It is demonstrated that terahertz emission occurs via excitation of photocurrent in the nanowires. The dynamics of photoinduced charge carriers is studied via the influence of an electron-hole plasma on terahertz radiation.
| Original language | English |
|---|---|
| Article number | 012156 |
| Journal | Journal of Physics: Conference Series |
| Volume | 1092 |
| DOIs | |
| Publication status | Published - 1 Jan 2018 |
| MoE publication type | A4 Conference publication |
| Event | International Conference on Metamaterials and Nanophotonics - Sochi, Russian Federation Duration: 17 Sept 2018 → 21 Sept 2018 Conference number: 3 |
Funding
Thus, it was shown that the time dynamics of photoexcited charge carriers in semiconductor NWs is determined both by the rapid motion of electrons in a local electric field (charge of a depleted layer capacitance) and their rapid capture to surface centers, by diffusion of holes (charge-exchange of capacitance) and their slow capture to surface centers and nonradiative centers in NWs. Acknowledgments The work was partially supported by the Russian Foundation for Basic Research (Grant 18-51-16002) and the Program of the Presidium of the Russian Academy of Sciences.
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