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Finite-Size Effects in Metasurface Lasers Based on Resonant Dark States

TitleFinite-Size Effects in Metasurface Lasers Based on Resonant Dark States
Publication TypeJournal Article
Year of Publication2018
AuthorsDroulias, S, Koschny, T, Soukoulis, CM
JournalAcs Photonics
Volume5
Pagination3788-3793
Date Published09
Type of ArticleArticle
ISBN Number2330-4022
Accession NumberWOS:000445322300045
Keywordsarrays, dark states, finite-size aperture, finite-size effects, Materials Science, metamaterials, metasurfaces, nanolasers, optics, physics, spaser, Technology - Other Topics
Abstract

The quest for subwavelength coherent light sources has recently led to the exploration of dark-mode based surface lasers, which allow for independent adjustment of the lasing state and its coherent radiation output. To understand how this unique design performs in real experiments, we need to consider systems of finite size and quantify finite-size effects not present in the infinite dark-mode surface laser model. Here we find that, depending on the size of the system, distinct and even counterintuitive behavior of the lasing state is possible, determined by a balanced competition between multiple loss channels, including dissipation, intentional out-coupling of coherent radiation, and leakage from the edges of the finite system. The conclusions are crucial for the design of future experiments that will enable the realization of ultrathin coherent light sources.

DOI10.1021/acsphotonics.8b00835
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Metamaterials

Alternate JournalACS Photonics