Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.4960347
Title: Polarization controllable multispectral symmetry-breaking absorber in mid-infrared
Authors: Chen, Nan 
Pitchappa, Prakash 
Ho, Chong Pei 
Hasan, Dihan 
Kropelnicki, Piotr
Alioto, Massimo 
Lee, Chengkuo 
Keywords: Science & Technology
Physical Sciences
Physics, Applied
Physics
BAND PERFECT ABSORBER
ELECTROMAGNETICALLY INDUCED TRANSPARENCY
ENHANCED INFRARED-SPECTROSCOPY
METAMATERIAL ABSORBER
CIRCUIT MODEL
ABSORPTION
INDEX
FREQUENCIES
CAPABILITY
GRAPHENE
Issue Date: 2016
Publisher: AMER INST PHYSICS
Citation: Chen, Nan, Pitchappa, Prakash, Ho, Chong Pei, Hasan, Dihan, Kropelnicki, Piotr, Alioto, Massimo, Lee, Chengkuo (2016/08/14). Polarization controllable multispectral symmetry-breaking absorber in mid-infrared. JOURNAL OF APPLIED PHYSICS 120 (6). ScholarBank@NUS Repository. https://doi.org/10.1063/1.4960347
Abstract: The versatility of mid-infrared metamaterial absorbers along with the ease of fabrication has been widely used in thermal imaging, molecule sensing, and many other applications. Controllable multispectral absorption is highly required for small footprint, multi-purpose, and real-time sensing applications. In this paper, we present the polarization control of interchangeable multispectral absorption based on the dual-band metamaterial absorber in split mode. Large modulation depth of absorption is obtained during multi-band transition through polarization control. We perform theoretical and numerical analysis to explain the results by formulating an equivalent circuit for the asymmetric cross resonator. Thermal controllability is also demonstrated to show the reversible and repeatable manipulation of absorption intensity at a given wavelength. Moreover, we characterized the limitation of this device under extreme high temperature. This work offers a design methodology for interchangeable multispectral metamaterial absorber from a new perspective by adopting polarization of incident light as a control mechanism, and this will open up possibilities for many valuable applications in the future.
Source Title: JOURNAL OF APPLIED PHYSICS
URI: https://scholarbank.nus.edu.sg/handle/10635/188842
ISSN: 00218979
10897550
DOI: 10.1063/1.4960347
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