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.
1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 401122, Peoples R China 2.Sichuan Univ, Dept Phys, Chengdu 610064, Peoples R China 3.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
Tang, Linlong,Shi, Haofei,Gao, Hongtao,et al. An eigenvalue method to study the threshold behaviors of plasmonic nano-lasers[J]. APPLIED PHYSICS B-LASERS AND OPTICS,2013,113(4):575-579.