Abstract
We present a method for the suppression of the radiative loss of plasmonic resonant modes by efficiently coupling them with the nonradiative Bloch surface waves in photoplasmonic metamaterials, comprised of a 2D array of plasmonic resonators deposited on the low-index termination layer of a 1D photonic crystal. The number of photonic crystal bilayers plays a crucial role in the plasmonic radiative loss, with $Q$-values increasing with incrementing photonic crystal bilayers reaching values of ${\sim}{580}$ in the UV-Vis regime. We also show that the fundamental plasmonic mode of the metamaterial split into different energy levels corresponding to surface Bloch waves associated with each bilayer of the photonic crystal.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Yuanshi Wei, Jiakang Shi, Hui Liu, Daohan Ge, and Liqiang Zhang
J. Opt. Soc. Am. B 40(7) 1890-1895 (2023)
Matteo Menotti and Marco Liscidini
J. Opt. Soc. Am. B 32(3) 431-438 (2015)
M. Asadolah Salmanpour, M. Mosleh, and S. M. Hamidi
Opt. Express 31(3) 4751-4759 (2023)