TY - JOUR
T1 - Berreman Embedded Eigenstates for Narrow-Band Absorption and Thermal Emission
AU - Sakotic, Zarko
AU - Krasnok, Alex
AU - Cselyuszka, Norbert
AU - Jankovic, Nikolina
AU - Alu, Andrea
PY - 2020/6/30
Y1 - 2020/6/30
N2 - Embedded eigenstates are nonradiative modes of an open structure with momentum compatible with radiation, yet characterized by unboundedly large Q factors. Traditionally, these states originate from total destructive interference of radiation from two or more nonorthogonal modes in periodic structures. In this work, we demonstrate a class of embedded eigenstates based on Berreman modes in epsilon-near-zero layered materials and propose realistic silicon carbide structures that support high-Q ( −10^3) resonances based on these principles. The proposed structures demonstrate strong absorption in a narrow spectral and angular range, giving rise to quasicoherent and highly directive thermal emission.
AB - Embedded eigenstates are nonradiative modes of an open structure with momentum compatible with radiation, yet characterized by unboundedly large Q factors. Traditionally, these states originate from total destructive interference of radiation from two or more nonorthogonal modes in periodic structures. In this work, we demonstrate a class of embedded eigenstates based on Berreman modes in epsilon-near-zero layered materials and propose realistic silicon carbide structures that support high-Q ( −10^3) resonances based on these principles. The proposed structures demonstrate strong absorption in a narrow spectral and angular range, giving rise to quasicoherent and highly directive thermal emission.
U2 - 10.1103/PhysRevApplied.13.064073
DO - 10.1103/PhysRevApplied.13.064073
M3 - Article
JO - Physical Review Applied
JF - Physical Review Applied
ER -