Surface-emitting distributed feedback (SE-DFB) lasers have a gold-coated grating on the p-contact surface that provides feedback and diffracts guided-mode radiation into the surface normal. To date, broad-area SE-DFB devices have produced as much as nine watts cw output power and 27 percent total "wall-plug" efficiency under continuous wave operating conditions. Grating chirp has been shown to improve the output efficiency as well as produce nearly diffraction-limited beam quality along the longitudinal direction. However, the lateral beam quality of broad area SE-DFB laser has been poor due to multi-mode operation and filamentation.


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    Titel :

    Curved-grating, surface-emitting distributed feedback lasers


    Beteiligte:
    Macomber, S.H. (Autor:in) / Mott, J.S. (Autor:in) / Schwartz, B.D. (Autor:in) / Setzko, R.S. (Autor:in) / Logue, J.E. (Autor:in)


    Erscheinungsdatum :

    1996-01-01


    Format / Umfang :

    215207 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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