Dispersion, decaying length and localization of transverse magnetic surface modes in one dimensional plasma photonic crystals
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The dispersion behavior, localization and total energy flow of transverse magnetic surface modes supported at the interface of air and a semi-infinite one dimensional plasma photonic crystals truncated with varying cap layer is analyzed by transfer matrix method. It is observed that properties of surface modes highly depend upon parallel wave vector, thickness of cap layer and plasma frequency. By altering thickness of cap layer from lower to higher values, all of the surface modes shift towards lower band edge, and vice versa. Also, it is found that localization of transverse magnetic surface modes are controlled by plasma frequency, parallel wave vector and thickness of cap layer.
KeywordsSurface modes Plasma photonic crystals Cap layer Localization
The authors are grateful to Dr. R.D.S. Yadava and Dr. A. K. Singh for their continuous encouragement and supports in many ways.
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