dorsal/arxiv
View SchemaThe Design and Simulated Performance of a Coated Nano-Particle Laser
| Authors | Joshua A. Gordon, Richard W. Ziolkowski |
|---|---|
| Categories | |
| ArXiv ID | physics/0612192 |
| URL | https://arxiv.org/abs/physics/0612192 |
| DOI | 10.1364/OE.15.002622 |
Abstract
The optical properties of a concentric nanometer-sized spherical shell comprised of an (active) 3-level gain medium core and a surrounding plasmonic metal shell are investigated. Current research in optical metamaterials has demonstrated that including lossless plasmonic materials to achieve a negative permittivity in a nano-sized coated spherical particle can lead to novel optical properties such as resonant scattering as well as transparency or invisibility. However, in practice, plasmonic materials have high losses at optical frequencies. It is observed that with the introduction of active materials, the intrinsic absorption in the plasmonic shell can be overcome and new optical properties can be observed in the scattering and absorption cross-sections of these coated nano-sized spherical shell particles. In addition, a "super" resonance is observed with a magnitude that is greater than that for a tuned, resonant passive nano-sized coated spherical shell. This observation suggests the possibility of realizing a highly sub-wavelength laser with dimensions more than an order of magnitude below the traditional half-wavelength cavity length criteria. The operating characteristics of this coated nano-particle (CNP) laser are obtained numerically for a variety of configurations.
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"abstract": "The optical properties of a concentric nanometer-sized spherical shell\ncomprised of an (active) 3-level gain medium core and a surrounding plasmonic\nmetal shell are investigated. Current research in optical metamaterials has\ndemonstrated that including lossless plasmonic materials to achieve a negative\npermittivity in a nano-sized coated spherical particle can lead to novel\noptical properties such as resonant scattering as well as transparency or\ninvisibility. However, in practice, plasmonic materials have high losses at\noptical frequencies. It is observed that with the introduction of active\nmaterials, the intrinsic absorption in the plasmonic shell can be overcome and\nnew optical properties can be observed in the scattering and absorption\ncross-sections of these coated nano-sized spherical shell particles. In\naddition, a \"super\" resonance is observed with a magnitude that is greater than\nthat for a tuned, resonant passive nano-sized coated spherical shell. This\nobservation suggests the possibility of realizing a highly sub-wavelength laser\nwith dimensions more than an order of magnitude below the traditional\nhalf-wavelength cavity length criteria. The operating characteristics of this\ncoated nano-particle (CNP) laser are obtained numerically for a variety of\nconfigurations.",
"arxiv_id": "physics/0612192",
"authors": [
"Joshua A. Gordon",
"Richard W. Ziolkowski"
],
"categories": [
"physics.optics"
],
"doi": "10.1364/OE.15.002622",
"title": "The Design and Simulated Performance of a Coated Nano-Particle Laser",
"url": "https://arxiv.org/abs/physics/0612192"
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