Tunable coupled states of a pair of Tamm plasmon polaritons and a microcavity mode

Abstract

The coupled states of a pair of Tamm plasmon polaritons and a microcavity mode are studied through the transfer matrix method in a metal–Bragg reflectors–cavity–Bragg reflectors–metal configuration. The properties of coupled states can be adjusted through the cavity thickness, but there is one coupled state for which the frequency remains the same as for the uncoupled Tamm plasmon polariton and independent of the cavity thickness. When the frequency of the uncoupled cavity mode is equal to that of the bare Tamm plasmon polariton, an anticrossing behavior with the most intense coupling occurs. There are three coupled modes with antisymmetry coupling and symmetry coupling in the anticrossing region. As cavity thickness increases, two coupled modes are degenerated into one state with frequency equal to that of the bare Tamm plasmon polariton. The third lower coupled mode and the uncoupled cavity mode are merged into one frequency by steps, but a huge amplification of field occurs in the cavity with the coupled mode. An analytical description is in good agreement with the numerical results.

Electro optical tuning of Tamm-plasmon exciton-polaritons

“…Tamm-plasmon (TP) modes appear as localized electromagnetic modes at the boundary between a metal layer and a DBR analogous to purely electronic Tamm-states evolving at a crystal surface. 10 Since the first experimental observation of TP-modes by Sasin et al, 11 various structures based on this fascinating new type of excitation have been theoretically proposed, anticipating, e.g., resonant coupling of TPpolariton states to optical microcavity modes, 12,13 nonlinear effects, such as optical bistability due to field enhancement in hybrid metal/dielectric structures, 14 or integrated circuits based on plasmon-exciton-polaritons. 15 Experimentally, laser oscillation from hybrid metal/semiconductor structures has been observed.…”

Tunable hybrid Tamm-microcavity states

“…In the intermediate region, where both MC modes are sufficiently close to the TPP, three modes are hybridized. Such a behavior of the spectral peaks was observed in 27 , where the hybrid states formed by two TPPs and one MC mode were investigated.…”

“…In addition, the formation of three hybrid modes upon simultaneous excitation of a pair of Tamm modes and one microcavity mode was investigated. One of the hybrid modes ensures the extraordinary field amplification in a MC, which opens the way to intensification of the nonlinear optical effects 27 . The hybridization makes it possible not only to enhance the field inside a MC, but also to weaken absorption in the metallic layers embedded in the structure, which is important for designing vertical cavity lasers 28 .…”

Tamm plasmon polariton in planar structures: A brief overview and applications

“…Here, the cavity mode and the TPP mode are considered as two oscillators coupled in a hybrid structure. The energy eigenvalues (ω) of the coupled oscillators system has been obtained by solving the a 2x2 matrix as described elsewhere [78].…”