期刊
APPLIED SCIENCES-BASEL
卷 8, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/app8091464
关键词
effective modal volume; nanocavities; laser resonators; near-infrared; theory and design
类别
资金
- UT Dallas faculty start-up fund
- Office of Naval Research Multidisciplinary Research Initiative [N00014-13-1-0678]
- National Science Foundation (NSF) [ECE3972, ECCS-1229677]
- NSF Center for Integrated Access Networks [EEC-0812072, 502629]
- Defense Advanced Research Projects Agency [N66001-12-1-4205]
- Cymer Corporation
We survey expressions of the effective modal volume, V-eff, commonly used in the literature for nanoscale photonic and plasmonic cavities. We apply different expressions of V-eff to several canonical cavities designed for nanoscale near-infrared light sources, including metallo-dielectric and coaxial geometries. We develop a metric for quantifying the robustness of different V-eff expressions to the different cavities and materials studied. We conclude that no single expression for V-eff is universally applicable. Several expressions yield nearly identical results for cavities with well-confined photonic-type modes. For cavities with poor confinement and a low quality factor, however, expressions using the proper normalization method need to be implemented to adequately describe the diverging behavior of their effective modal volume. The results serve as a practical guideline for mode analysis of nanoscale optical cavities, which show promise for future sensing, communication, and computing platforms.
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