Dual-layer ultrathin film optics: I. Theory and analysis

Dual-layer ultrathin film optics: I. Theory and analysis
Title:
Dual-layer ultrathin film optics: I. Theory and analysis
Other Titles:
Journal of Optics
Keywords:
Publication Date:
16 February 2015
Citation:
Qian Wang and Kim Peng Lim 2015 J. Opt. 17 035613
Abstract:
This paper revisits dual-layer ultrathin film optics, which can be used for functional graded refractive index thin film stack. We present the detailed derivation including s-polarized and p-polarized light under arbitrary incidence angle showing the equivalence between the dual-layer ultrathin films and a negative birefringent thin film and also the approximations made during the derivation. Analysis of the approximations shows the influence of thickness of dual-layer thin films, the incidence angle and desired refractive index of the birefringent film. Numerical comparison between the titanium dioxide/aluminum oxide based dual-layer ultrathin film stack and the equivalent birefringent film verifies the theoretical analysis. The detailed theoretical study and numerical comparison provide a physical insight and design guidelines for dual-layer ultrathin film based optical devices.
License type:
PublisherCopyrights
Funding Info:
Description:
ISSN:
2040-8978
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