750 nm 1.5 W frequency-doubled semiconductor disk laser with a 44 nm tuning range

Esa Saarinen, Jari Lyytikäinen, Sanna Ranta, Antti Rantamäki, Alexei Sirbu, Vladimir Iakovlev, Eli Kapon, Oleg Okhotnikov

    Research output: Contribution to journalArticleScientificpeer-review

    8 Citations (Scopus)

    Abstract

    We demonstrate 1.5 W of output power at the wavelength
    of 750 nm by intracavity frequency doubling a wafer-fused
    semiconductor disk laser diode-pumped at 980 nm. An
    optical-to-optical efficiency of 8.3% was achieved using a
    bismuth borate crystal. The wavelength of the doubled
    emission could be tuned from 720 to 764 nm with an intra-
    cavity birefringent plate. The beam quality parameter M2
    of the laser output was measured to be below 1.5 at all
    pump powers. The laser is a promising tool for biomedical
    applications that can take advantage of the large penetra-
    tion depth of light in tissue in the 700–800 nm spectral
    range.
    Original languageEnglish
    Pages (from-to)4380-4383
    Number of pages4
    JournalOptics Letters
    Volume40
    Issue number19
    DOIs
    Publication statusPublished - 1 Oct 2015
    Publication typeA1 Journal article-refereed

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    • Publication forum level 2

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