| 摘要 |
PROBLEM TO BE SOLVED: To provide a BRS laser and a method for manufacturing the BRS laser, in which, an active layer is protected from diffusion of P-type impurities which come from not only a wall face on both sides of a ribbon, namely upper and bottom wall faces of the ribbon, but also a sideward wall face connected to the upper and bottom wall faces. SOLUTION: The P-type impurities which are directly adjacent to an active layer are doped on a layer in order to manufacture an embedding ribbon laser, and a layer obtained by doping thin N-type impurities is formed on the above layer. After the active layer is etched for forming a ribbon, the ribbon is embedded in the layer in which the N-type impurities were doped so that all four sideward faces of the ribbon come into contact with the layer in which the N-type impurities were doped. One face comes into contact with a thin layer, and the other three faces come into contact with the embedded layer. This improves electric confinement.
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