The 3-dimensional waveguide problem for stripe-geometry D.H. lasers is solved by an iterative method. The method allows one to self consistently determine the effective dielectric constant. Self-consistent solutions for stripe lasers with symmetric Epstein profiles in the junction plane are compared with approximate solutions obtained by ignoring the influence of the lateral waveguide on the solution of the transversewaveguide problem. It is shown that the approximate method, used previously, can lead to a considerable overestimation of the near-field half width of the fundamental lateral mode.
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Osihski et al. (1979) studied this question.
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