期刊
NANO LETTERS
卷 15, 期 2, 页码 1382-1387出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl504689s
关键词
Plasmonic lasing; nanoantenna array; nanocavity; surface plasmon
类别
资金
- National Key Basic Research Program of China [2012CB921900, 2012CB922003]
- National Natural Science Foundation of China [61036005, 61377053, 11274293, 11374286]
Plasmonic nanolasers have ultrahigh lasing thresholds, especially those devices for which all three dimensions are truly subwavelength. Because of a momentum mismatch between the propagating light and localized optical field of the subwavelength nanocavity, poor optical pumping efficiency is another important reason for the ultrahigh threshold but is normally always ignored. On the basis of a cavity-embedded nanoantenna array design, we demonstrate a room-temperature low-threshold plasmonic nanolaser that is robust, reproducible, and easy-to-fabricate using chemical-template lithography. The mode volume of the device is similar to 0.22(lambda/2n)(3) (here, lambda is resonant wavelength and n is the refractive index), and the experimental lasing threshold produced is similar to 2.70MW/mm(2). The lasing polarization and the function of nanoantenna array are investigated in detail. Our work provides a new strategy to achieve room-temperature low-threshold plasmonic nanolasers of interest in applications to biological sensoring and information technology.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据