Band structure and broadband compensation of absorption by amplification in layered optical metamaterials

N. N. Rozanov*, S. V. Fedorov, R. S. Savel'ev, A. A. Sukhorukov, Y. S. Kivshar

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    The frequency dependence of the gain required to compensate for absorption is determined for a layered structure consisting of alternating absorbing and amplifying layers. It is shown that the fulfillment of the same conditions is required for the existence of a band structure consisting of alternating bands allowed and forbidden for optical radiation propagation in the frequency-wave vector parametric region. Conditions are found under which the gain required for compensation is smaller than thresholds for absolute (parasitic lasing) and convective (waveguide amplification of radiation) instabilities.

    Original languageEnglish
    Pages (from-to)782-791
    Number of pages10
    JournalJournal of Experimental and Theoretical Physics
    Volume114
    Issue number5
    DOIs
    Publication statusPublished - May 2012

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