Abstract
An eigenvalue method is proposed to study the threshold behaviors of plasmonic nano-lasers. The medium gain and dispersion are taken into consideration based on semi-classical laser dynamics, and therefore the lasing threshold, mode pattern, and lasing frequency can be theoretically predicted. The lasing properties of dielectric, plasmonic core, and plasmonic shell nano-lasers are investigated in details. It is found that the lasing thresholds of nano-lasers can be reduced by two orders of magnitude when introducing localized surface plasmon modes.
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Acknowledgments
This work was supported by the Chinese Nature Science Grant (11174281, 91123032, 61275061), and Natural Science Foundation Project of CQ CSTC (cstc2012jjjq0027, cstc2012ggC0024).
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Tang, L., Shi, H., Gao, H. et al. An eigenvalue method to study the threshold behaviors of plasmonic nano-lasers. Appl. Phys. B 113, 575–579 (2013). https://doi.org/10.1007/s00340-013-5512-4
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DOI: https://doi.org/10.1007/s00340-013-5512-4