Inverse Opal Optical Tamm State for Sensing Applications
arxiv(2024)
摘要
We report the existence of optical Tamm states (OTS) in inverse opal (IO) -
based three-dimensional photonic crystal on a flat metal substrate, validated
through both numerical simulations and experimental observations. Our
fabrication approach for the Tamm inverse opal (Tamm-IO) structure is notably
straightforward and does not involve corrosive chemicals. Upon infiltration of
non-reactive solvents such as methanol and ethanol into the IO, a noticeable
shift of the OTS, consistent with our simulations is observed, and the temporal
dynamics of the same have been investigated. The experimentally obtained
sensitivity is 110 nm/RIU which is of the same order as the computed value,
making the IO OTS to be an attractive sensing tool.
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