Improvement of the beam quality of a diode laser with two active broad-area segments

Mingjun Chi, B. Thestrup, J.L. Mortensen, M.E. Nielsen, P.M. Petersen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The beam quality of a diode laser with two active segments was improved using an external cavity with collimating optics, a grating, and an output coupler. The beam quality of the output beam, which is the first-order diffractive beam from the grating, was improved by a factor of 2, and at least half of the freely running power of the laser was coupled out from the external cavity. The output power can be enhanced further by the feedback from the zeroth-order beam. The possibility of improving the beam quality further is discussed and a new double-external-cavity configuration is suggested.
    Original languageEnglish
    JournalJournal of Optics A: Pure and Applied Optics (Print)
    Volume5
    Issue number5
    Pages (from-to)S338-S341
    ISSN2040-8978
    DOIs
    Publication statusPublished - 2003

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