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17 September 2018 Probing Mie resonances with internal sources (Conference Presentation)
Wanwoo Noh, Matthieu Dupre, Babak Bahari, Ashok Kodigala, Boubacar Kanté
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Proceedings Volume 10721, Active Photonic Platforms X; 1072129 (2018) https://doi.org/10.1117/12.2320862
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States
Abstract
Mie theory describes how electromagnetic waves scatter at the interface between a homogeneous spherical dielectric particle surrounded by a material of a different optical index. Numerical improvements have allowed studying more complicated geometries with the multipole decomposition of the spherical harmonics. Hence, Mie theory is widely applied in theoretical and applied physics, to enable novel light manipulation, to model Fano resonances, nonlinear optics, or to design dielectric metamaterials. Recently, the anapole state has brought attention to the community as one of the most interesting phenomena. It can be interpreted as a destructive interference in the far field between the fields scattered by the toroidal and electrical dipoles at a given frequency. Such element is therefore transparent to any incoming plane wave. However, things are different if the element is excited in its near field, where it can be excited by an internal source. In this work, we experimentally demonstrate a semiconductor laser based on a single cylindrical resonator suspended in air. An epitaxially grown InGaAsP layer on an InP substrate is patterned by e-beam lithography. We study the shift of the Mie resonance as geometrical parameters are varied, and show how it affects the shift of the lasing frequency. Our investigation of Mie resonances from an active gain medium would is a rich platform to study nontrivial excitation of a complex field and paves the way to designing active devices exploiting Mie theory.
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Wanwoo Noh, Matthieu Dupre, Babak Bahari, Ashok Kodigala, and Boubacar Kanté "Probing Mie resonances with internal sources (Conference Presentation)", Proc. SPIE 10721, Active Photonic Platforms X, 1072129 (17 September 2018); https://doi.org/10.1117/12.2320862
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KEYWORDS
Spectroscopy
Mie scattering
Dielectrics
Spherical lenses
Applied physics
Electromagnetic radiation
Interfaces
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