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https://hdl.handle.net/10356/147822| Title: | Terahertz emission from localized modes in one-dimensional disordered systems [Invited] | Authors: | Zeng, Yongquan Liang, Guozhen Qiang, Bo Meng, Bo Liang, Hou Kun Mansha, Shampy Li, Jianping Li, Zhaohui Li, Lianhe Davies, Alexander Giles Linfield, Edmund Harold Zhang, Ying Chong, Yidong Wang, Qi Jie |
Keywords: | Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics | Issue Date: | 2018 | Source: | Zeng, Y., Liang, G., Qiang, B., Meng, B., Liang, H. K., Mansha, S., Li, J., Li, Z., Li, L., Davies, A. G., Linfield, E. H., Zhang, Y., Chong, Y. & Wang, Q. J. (2018). Terahertz emission from localized modes in one-dimensional disordered systems [Invited]. Photonics Research, 6(2), 117-122. https://dx.doi.org/10.1364/PRJ.6.000117 | Project: | Ministry of Education—Singapore (MOE) (MOE 2016-T2-1-128) Agency for Science, Technology and Research (A*STAR) (1426500050) National Research Foundation Singapore (NRF) (NRF-CRP18-2017-02) Engineering and Physical Sciences Research Council (EPSRC) (EP/P021859/1) Royal Society and Wolfson Foundation |
Journal: | Photonics Research | Abstract: | We demonstrate terahertz (THz) frequency laser emission around 3.2 THz from localized modes in one-dimensional disordered grating systems. The disordered structures are patterned on top of the double-metal waveguide of a THz quantum cascade laser. Multiple emission peaks are observed within a frequency range corresponding to the bandgap of a periodic counterpart with no disorder, indicating the presence of mode localization aided by Bragg scattering. Simulations and experimental measurements provide strong evidence for the spatial localization of the THz laser modes. | URI: | https://hdl.handle.net/10356/147822 | ISSN: | 2327-9125 | DOI: | 10.1364/PRJ.6.000117 | Schools: | School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences |
Organisations: | Singapore Institute of Manufacturing Technology, 2 Fusionopolis Way, Singapore 138634, Singapore Institute of Photonics Technology, Jinan University, Guangzhou 510632, China State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-sen University, Guangzhou 510275, China School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K. |
Research Centres: | Centre for OptoElectronics and Biophotonics (OPTIMUS) | Rights: | © 2018 Chinese Laser Press. This is an open-access article distributed under the terms of the Creative Commons Attribution License. | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
| Appears in Collections: | EEE Journal Articles |
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| Terahertz emission from localized modes in one-dimensional disordered systems [Invited].pdf | 1.11 MB | Adobe PDF |  View/Open |
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