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)

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, Ili Farhana
• 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; College of Science and Engineering
• ISSN: 0277-786X