We demonstrate a very low threshold 1.55 /spl mu/m grating coupled surface emitting laser (GCSEL) with a CW room temperature threshold of only 6 mA. The laser structure is a multi-quantum well distributed-feedback (DFB) laser with a second order grating buried under the gain medium. The laser is fabricated by following the capped-mesa buried heterostructure (CMBH) process with a stripe width of around 0.9 to 1.2 /spl mu/m wide. We have measured the FWHM of the far field intensity profile of the laser.


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    Title :

    Emitting far field pattern study of long wavelength grating coupling surface emitting lasers


    Contributors:
    Shih, M.H. (author) / Fan, J.J. (author) / Gopal, C. (author) / Choa, F.S. (author) / Simonis, G.J. (author) / Tanbun-Ek, T. (author) / Logan, R.A. (author) / Tsang, W.T. (author) / Sergent, A.M. (author)

    Published in:

    Proceedings of LEOS'94 ; 1 ; 256-257 vol.1


    Publication date :

    1994-01-01


    Size :

    169841 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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