Phonon-polaritons in quasiperiodic piezoelectric superlattices

Abstract

Phonon-polaritons are studied both theoretically and experimentally in a one-dimensional two-component generalized quasiperiodic piezoelectric superlattice. The experimental observation of phonon-polaritons through dielectric abnormality is carried out at the microwave region. Some potential applications are discussed.

Phonon polariton modes in porous III–V semiconductors

“…Some of the areas of current interest are (i) photonic polaritonic materials [5], (ii) left handed materials [6], (iii) porous semiconductor materials [7,8], (iv) microcavity polaritons [9], and (v) those associated with acoustic modes in a piezoelectric material [10,11]. Some of these phenomena are made use of in devices for supporting spontaneous emission, for projecting light along a specific path in novel laser geometry and in efficient frequency conversion [12][13][14] and so on.…”

Quasiperiodic AlGaAs superlattices for neuromorphic networks and nonlinear control systems

“…117, 044303 (2015) nanophotonics (see, e.g., review [2]). Piezoelectric quasiperiodic SLs are promising for radiofrequency and microwave transmitters [3], and magnetic quasiperiodic SLs -for storage devices [4]. Semiconductor quasiperiodic SLs also have interesting properties.…”

Piezoelectric superlattices as multi-field internally resonating metamaterials

“…Such strong coupling, and the bandgap behavior of PSLs can be exploited for the design of novel acousto-optical devices for the manipulation of acoustic and/or electromagnetic waves for sensing and signal processing applications). [13][14][15][16][17][18][19] This paper reviews the dispersion properties of PSLs, and interprets them as examples of internally resonating metamaterials. The study is conducted through the application of the Partial Wave Expansion (PWE) method, [23][24][25] and complemented by the development of homogenized relations which aid the investigation of the resonating equivalent properties of the system at long wavelengths.…”

“…The internal resonances lead to unique properties which are the result of strong interactions between electromagnetic and acoustic waves. In the considered periodic configurations, denoted in the literature as piezoelectric superlattices (PSL), [13][14][15][16][17][18][19] phonon-photon coupling results in the generation of polaritons. 20 Strong coupling occurs at frequencies defined by the periodicity of the medium, and is associated with the internal resonant behavior of the coupled fields.…”

“…[13][14][15][16][17][18][19] The flat dispersion modes correspond to long wavelength phonons, while the dispersion branches for the uncoupled primary system are photons. The new dispersion branch resulting from the coupling is a polariton branch.…”