Signatures of thermal hysteresis in Tamm-wave propagation

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Abstract

We numerically solved the boundary-value problem for Tamm waves (which may also be classified as Uller–Zenneck waves here) guided by the planar interface of a homogeneous isotropic dissipative dielectric (HIDD) material and a periodically multilayered isotropic dielectric material. The HIDD material was chosen to be VO2, which, at optical wavelengths, has a temperature-dependent refractive index with a hysteresis feature, i.e., the temperature-dependence of its refractive index varies depending upon whether the temperature is increasing or decreasing. A numerical code was implemented to extract solutions of the dispersion equation at a fixed wavelength for both 푝- and 푠-polarization states over the temperature range [50,80]°C. A multitude of Tamm waves of both linear polarization states were found, demonstrating a clear demarcation of the heating and cooling phases in terms of wavenumbers and propagation distances. Thereby, the signatures of thermal hysteresis in Tamm-wave propagation were revealed.
Original languageEnglish
Pages (from-to)2155-2160
JournalJournal of the Optical Society of America B
Volume34
Issue number10
Early online date25 Aug 2017
DOIs
Publication statusPublished - 20 Sep 2017

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