ORCID Profile
0000-0002-1634-0291
Current Organisations
Rajshahi University of Engineering and Technology
,
Imam Abdulrahman Bin Faisal University College of Engineering
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Publisher: The Optical Society
Date: 24-10-2019
DOI: 10.1364/AO.58.008416
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 06-2020
Publisher: Optica Publishing Group
Date: 29-05-2020
DOI: 10.1364/OSAC.395228
Abstract: Metamaterials with large axial anisotropy posses a nearly flat dispersion profile in k (wave vector) space and thus offer an effective solution to overcome the diffraction limit by supporting the propagating high - k extraordinary modes. However, existing analytical models reveal that resonant high - k slab modes and the polarization dependent ordinary waves cause image distortion in metamaterial slabs. In this paper, we consider a two-dimensional (2D), local, highly anisotropic metamaterial slab as an imaging device and apply a standard transfer matrix approach to calculate the transmission properties of the slab at terahertz (THz) frequencies. Our simple analytical model reveals that resonances induced by the reflections are the main source of deteriorating the image quality, thus requires effective post-processing methods to remove them. For that, we apply an ultra-short super-Gaussian windowing function to minimize the resonant behavior of the metamaterial slabs, observing good imaging over the frequency band of interest. Our numerical method offers a pathway to mitigate observed image artefacts, and are applicable to a range of highly anisotropic metamaterial slabs, e.g., wire metamaterials, layered metamaterials and magnifying hyperlenses. Finally, finite element based software is used to model the 2D metamaterial slab to verify the analytical models.
Publisher: IEEE
Date: 05-2013
Publisher: Elsevier BV
Date: 06-2014
Publisher: The Optical Society
Date: 17-05-2016
DOI: 10.1364/AO.55.004145
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 15-08-2016
Publisher: IEEE
Date: 12-2006
Publisher: IEEE
Date: 05-2013
Publisher: The Optical Society
Date: 12-10-2016
DOI: 10.1364/AO.55.008441
Publisher: Elsevier BV
Date: 02-2014
Publisher: Springer Science and Business Media LLC
Date: 05-05-2011
Publisher: Elsevier BV
Date: 2009
Publisher: Elsevier BV
Date: 04-2022
Publisher: IEEE
Date: 05-2013
Publisher: Elsevier BV
Date: 06-2019
Publisher: FapUNIFESP (SciELO)
Date: 12-2013
Publisher: Springer Science and Business Media LLC
Date: 03-2021
Location: Bangladesh
Location: Saudi Arabia
No related grants have been discovered for S M Abdur Razzak.