Visible and near-infrared laser emission of pigment extracted from green algae in microdroplet mixed with highly scattering Intralipid-10%

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 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