Transverse modes of gain-guided coupled-stripe lasers: External cavity control of the emitter spacing

Epler, J. E.; Holonyak, N.; Burnham, R. D.; Paoli, T. L.; Thornton, R. L.; Blouke, M. M.
July 1985
Applied Physics Letters;7/1/1985, Vol. 47 Issue 1, p7
Academic Journal
By means of an external grating cavity, the dispersion relation of the transverse modes of gain-guided coupled-stripe laser diodes is determined. The parabolic relation obtained indicates (despite the stripes) a relatively flat gain profile similar to a broad area laser. Accordingly, higher order transverse modes are possible and are demonstrated with near and far fields exhibiting one and two emitters per stripe.


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