Spectral collapse in ensembles of metamolecules

V.A. Fedotov, N. Papasimakis, E. Plum, A. Bitzer, M. Walther, P. Kuo, Din-ping Tsai, N.I. Zheludev

Research output: Journal article publicationJournal articleAcademic researchpeer-review

155 Citations (Scopus)


We report on the first direct experimental demonstration of a collective phenomenon in metamaterials: spectral line collapse with an increasing number of unit cell resonators (metamolecules). This effect, which is crucial for achieving a lasing spaser, a coherent source of optical radiation fuelled by coherent plasmonic oscillations in metamaterials, is linked to the suppression of radiation losses in periodic arrays. We experimentally demonstrate spectral line collapse at microwave, terahertz and optical frequencies. © 2010 The American Physical Society.
Original languageEnglish
Article number223901
JournalPhysical Review Letters
Issue number22
Publication statusPublished - 1 Jun 2010
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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