Propagating bound states in the continuum in dielectric gratings
| Autor: | P. N. Semina, Dmitrii N. Maksimov, S. A. Skorobogatov, Evgeny N. Bulgakov |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physics
Total internal reflection Condensed matter physics Scattering FOS: Physical sciences Physics::Optics Statistical and Nonlinear Physics 02 engineering and technology Dielectric Grating 021001 nanoscience & nanotechnology Polarization (waves) 01 natural sciences Atomic and Molecular Physics and Optics 0103 physical sciences Bound state Slab Perpendicular 010306 general physics 0210 nano-technology Optics (physics.optics) Physics - Optics |
| Popis: | We consider propagating bound states in the continuum in dielectric gratings. The gratings consist of a slab with ridges periodically arranged either on top or on both sides of the slab. Based on the Fourier modal approach, we recover the leaky zones above the line of light to identify the geometries of the gratings supporting Bloch bound states propagating in the direction perpendicular to the ridges. Most importantly, it is demonstrated that if a two-sided grating possesses either mirror or glide symmetry, the Bloch bound states are stable to variation of parameters as long as the above symmetries are preserved. |
| Databáze: | OpenAIRE |
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