Please use this identifier to cite or link to this item:
|Title:||Greatly enhanced continuous-wave terahertz emission by nano-electrodes in a photoconductive photomixer||Authors:||Tanoto, H.
|Issue Date:||Feb-2012||Citation:||Tanoto, H.,Teng, J.H.,Wu, Q.Y.,Sun, M.,Chen, Z.N.,Maier, S.A.,Wang, B.,Chum, C.C.,Si, G.Y.,Danner, A.J.,Chua, S.J. (2012-02). Greatly enhanced continuous-wave terahertz emission by nano-electrodes in a photoconductive photomixer. Nature Photonics 6 (2) : 121-126. ScholarBank@NUS Repository. https://doi.org/10.1038/nphoton2011322||Abstract:||An efficient, room-temperature-operation continuous-wave terahertz source will greatly benefit compact terahertz system development for high-resolution terahertz spectroscopy and imaging applications. Here, we report highly efficient continuous-wave terahertz emission using nanogap electrodes in a photoconductive antenna-based photomixer. The tip-to-tip nanogap electrode structure provides strong terahertz field enhancement and acts as a nano-antenna to radiate the terahertz wave generated in the active region of the photomixer. In addition, it provides good impedance-matching to the terahertz planar antenna and exhibits a lower RC time constant, allowing more efficient radiation, especially at the higher part of the terahertz spectrum. As a result, the output power of the photomixer with the new nanogap electrode structure in the active region is two orders of magnitude higher than for a photomixer with typical interdigitated electrodes. The terahertz emission bandwidth also increases by a factor of more than two. © 2012 Macmillan Publishers Limited. All rights reserved.||Source Title:||Nature Photonics||URI:||http://scholarbank.nus.edu.sg/handle/10635/56159||ISSN:||17494885||DOI:||10.1038/nphoton2011322|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on May 5, 2021
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.