Abstract
We present a new approach to subwavelength optical confinement, based on hyperbolic media in planar Fabry-Perot geometry. Unlike higher-order resonance modes in indefinite metamaterial cavities, the predicted resonance corresponds to 0th-order mode and can be observed in planar systems. Our approach combines subwavelength light confinement with strong radiative coupling, enabling a practical planar design of nanolasers and subwavelength waveguides.
Highlights
We present a new approach to subwavelength optical confinement, based on hyperbolic media in planar Fabry-Perot geometry
Unlike higher-order resonance modes in indefinite metamaterial cavities, the predicted resonance corresponds to 0th-order mode and can be observed in planar systems
Our approach is robust to losses, is compatible with planar semiconductor metamaterial technology, and when necessary allows strong radiative coupling
Summary
Hyperbolic optical metamaterials, highly anisotropic nanostructured composites with opposite signs of the dielectric permittivity in two orthogonal directions, represent one of the most active areas of current research [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19] These systems show a wide range of new physical phenomena – from extreme light localization in subwavelength waveguides [2] and resonant cavities [3], to enhanced radiative energy transport [4, 5] and quantum-electrodynamics phenomena [6, 7], and offer many intriguing applications – from far-field imaging with the resolution beyond the diffraction limit [8,9,10] to new stealth technology [11]. Our approach can combine arbitrary subwavelength resonator dimensions with strong radiative coupling, leading to possible applications in nanolasers and deep subwavelength waveguides
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