Abstract

Pigment extracted directly from green algae contained in liquid microdroplets was found, for the first time to the authors' knowledge, to produce biomaterial laser action by substituting strongly scattering Intralipid-10%. No laser emission was observed using microdroplets without the addition of this scattering medium. Spectral narrowing and increased emission intensity with a well-defined lasing threshold were confirmed at visible and near-infrared wavelengths, depending on the microdroplet size and mixture concentration.

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