Record Details
Large enhancement of nonlinear terahertz absorption in intrinsic GaAs by plasmonic nano antennas
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Large enhancement of nonlinear terahertz absorption in intrinsic GaAs by plasmonic nano antennas |
| Names |
Jeong, Young-Gyun
(creator) Paul, Michael J. (creator) Kim, Seung-Hyun (creator) Yee, Ki-Ju (creator) Kim, Dai-Sik (creator) Lee, Yun-Shik (creator) |
| Date Issued | 2013-10-21 (iso8601) |
| Note | This is the publisher’s final pdf. The published article is copyrighted by the American Institute of Physics Publishing and can be found at: http://scitation.aip.org/content/aip/journal/apl. |
| Abstract | We demonstrate remarkably strong nonlinear terahertz (THz) effects in an intrinsic GaAs wafer patterned with a nanometer-width slot antenna array. The antenna near-field reaches 20 MV/cm due to the huge field enhancement in the plasmonic nano-structure (field enhancement factor, α ≅ 50). The THz fields are strong enough to generate high density free carriers (Nₑ > 10¹⁷ cm⁻³) via interband excitations associated with impact ionizations and thus to induce large absorption of the THz radiation (>35%). The nonlinear THz interactions take place in the confined region of nanometer-scale layer adjacent to the antenna. |
| Genre | Article |
| Identifier | Jeong, Y. G., Paul, M. J., Kim, S. H., Yee, K. J., Kim, D. S., & Lee, Y. S. (2013). Large enhancement of nonlinear terahertz absorption in intrinsic GaAs by plasmonic nano antennas. Applied Physics Letters, 103(17), 171109. doi:10.1063/1.4826272 |
