Abstract
A semiconductor laser with a new waveguide is developed. It allows significant narrowing of the directional pattern (to 4° in the plane perpendicular to the p–n junction). In the used waveguide, the minimum excess of the effective refractive index n eff of the excitation mode over the substrate refractive index n s (n eff–n s ≪ 1) is provided by selecting the thickness of Al0.3Ga0.7As confinement layers, which significantly increases the waveguide mode size and leads to directional-pattern narrowing.
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Original Russian Text © N.V. Baydus, S.M. Nekorkin, D.A. Kolpakov, A.V. Ershov, V.Ya. Aleshkin, A.A. Dubinov, A.A. Afonenko, 2016, published in Fizika i Tekhnika Poluprovodnikov, 2016, Vol. 50, No. 11, pp. 1509–1512.
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Baydus, N.V., Nekorkin, S.M., Kolpakov, D.A. et al. Method for narrowing the directional pattern of an InGaAs/GaAs/AlGaAs multiwell heterolaser. Semiconductors 50, 1488–1492 (2016). https://doi.org/10.1134/S1063782616110038
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DOI: https://doi.org/10.1134/S1063782616110038