Abstract

Plasmonic nanolasers using sub-diffraction-limit plasmonic cavity modes can pursue extreme lasing conditions with ultrahigh optical confinement. Recent progresses on plasmonic nanolasers from both theoretical and experimental aspects are introduced in article number 1900334 by Xin Guo, Limin Tong and co-workers; future prospects, challenges and laser identification are discussed. The cover image illustrates the way to push the limit of lasing conditions with increasing confinement of lasing modes from one, two to prospectively three dimensions in these nanolasers.

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