Varying the Periodicity to Achieve High Quality Factor on Asymmetrical H-Shaped Resonators

Mohamad Ali Nasri, I. F., Mbomson, I. G., De La Rue, R. M. and Johnson, N. P. (2016) Varying the Periodicity to Achieve High Quality Factor on Asymmetrical H-Shaped Resonators. In: SPIE Phototonics Europe: Metamaterials X, Brussells, Belgium, 3-7 April 2016, 98831N. (doi:10.1117/12.2230565)

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Abstract

An asymmetrical H-shaped resonator (ASH) has been designed using gold on a fused silica substrate. The aim is to obtain a high - quality factor at the reflectance resonance peaks in the mid - infrared wavelength of 2 μm to 8 μm. The structures were modelled using the Finite Difference Time Domain (FDTD) Lumerical Solution simulation software by adjusting the parameter of periodic boundary condition on the X and Y-axis and perfectly matched layer (PML) on the Z- axis. The asymmetric structures give double resonance peaks that depend on the arm-length of the structure. The periodicity along the X and Y-axis was varied to tune the width of the resonant peaks in order to obtain the maximum Qfactor. Experimental results broadly confirm the simulations.

Item Type:Conference Proceedings
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Johnson, Dr Nigel and De La Rue, Professor Richard and Mohamad Ali Nasri, Ms Ili
Authors: Mohamad Ali Nasri, I. F., Mbomson, I. G., De La Rue, R. M., and Johnson, N. P.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
ISSN:0277-786X

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