Study of Non-linear Optical Properties of an ENZ Composite Metamaterial. Issue 1 (1st February 2023)

• Record Type: Journal Article
• Authors: Kumari, N.; Yadav, P.; Ankush, ; Sinha, R. K.
• Is Part Of: Journal of physics. Volume 2426:Issue 1(2023)
• Publication Date: 2023-02-01
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/2426/1/012006
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: We designed a non-linear composite metamaterial made up of sandwiched fused silica glass with silver in an alternate manner with the magnitude of thickness is adjusted so that ε'=0 in the near infrared range., and the structure's optical behaviour is theoretically studied. It shows a shift from negative to positive in the real component of dielectric permittivity as a function of wavelength. we also have studied the variation of ENZ wavelength with thickness of dielectric layer and plasma frequency. By using the Maxwell Garnett theory, we have calculated non-linear optical properties, and we find that as we increase the thickness of dielectric material the ENZ wavelength increases along with the increases in real part of non-linear susceptibility. A significant enhancement in nonlinear parameters has been also observed at ENZ wavelength due to the ENZ nature of the composite material.