Bulk-like-phonon polaritons in one-dimensional photonic superlattices
Source abstract
Abstract
Abstract We investigate the properties of a one-dimensional photonic superlattice made of alternating layers of air and wurtzite aluminum nitride. The Maxwell equations are solved for any admissible values of the angle of incidence by means of the transfer matrix formalism. The band structure of the frequency spectrum is obtained, as well as the density of states and transmittance associated to both the TM and TE modes. The dispersion relations indicate that for oblique incidence and TM modes there is a component of the electric field oriented along the growth direction of the structure that couples with the longitudinal optical phonon oscillations of the aluminum nitride thus leading to the appearance of longitudinal phonon polaritons in the system.
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Research context
OpenAlex topics: Photonic Crystals and Applications · Photonic and Optical Devices · Thermal Radiation and Cooling Technologies
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References (27)
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