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Semiconductor activated terahertz metamaterials

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Abstract

Metamaterials have been developed as a new class of artificial effective media realizing many exotic phenomena and unique properties not normally found in nature. Metamaterials enable functionality through structure design, facilitating applications by addressing the severe material issues in the terahertz frequency range. Consequently, prototype functional terahertz devices have been demonstrated, including filters, antireflection coatings, perfect absorbers, polarization converters, and arbitrary wavefront shaping devices. Further integration of functional materials into metamaterial structures have enabled actively and dynamically switchable and frequency tunable terahertz metamaterials through the application of external stimuli. The enhanced light-matter interactions in active terahertz metamaterials may result in unprecedented control and manipulation of terahertz radiation, forming the foundation of many terahertz applications. In this paper, we review the progress during the past few years in this rapidly growing research field. We particularly focus on the design principles and realization of functionalities using single-layer and fewlayer terahertz planar metamaterials, and active terahertz metamaterials through the integration of semiconductors to achieve switchable and frequency-tunable response.

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  1. Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA

    Hou-Tong Chen

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This paper is dedicated to the fond memory of my friend and classmate Dr. Hua Zhong, who passed away on Dec. 8, 2013

Hou-Tong Chen received his B.S. and M.S. degrees from the University of Science and Technology of China in 1997 and 2000, respectively, and Ph.D degree from Rensselaer Polytechnic Institute in 2004, all in physics. Between 05/2005 and 05/2008, he was a postdoctoral research associate in Los Alamos National Laboratory (LANL). Since 06/2008, he has been a technical staff member in the Center for Integrated Nanotechnologies (CINT) at LANL, a Department of Energy/Office of Science Nanoscale Science Research Center (NSRC) jointly operated by Los Alamos and Sandia National Laboratories as a national user facility. His research interests are in metamaterials and terahertz science and technology. He has co-authored over 50 publications in peer-reviewed journals including Science, Nature, Nature Photonics, and Physical Review Letters, which have been totally cited over 2400 times according to ISI Web of Science. He has delivered over 50 invited presentations in international conferences as well as colloquia and seminars in research institutions. He received LANL Achievement Awards in 2013 and 2007. He has been serving as a member of the Editorial Committee in Scientific Reports, International Journal of Terahertz Science and Technology and Frontiers of Optoelectronics. He also served many conferences and workshops in the organizing committee, advisory committee, or technical program committee.

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Chen, HT. Semiconductor activated terahertz metamaterials. Front. Optoelectron. 8, 27–43 (2015). https://doi.org/10.1007/s12200-014-0436-0

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