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Spatial current distribution in semiconductor optical amplifiers with ridge waveguides and quantum well-dot active region
Kharchenko A. A.
1, Nadtochiy A. M.
2, Kornyshov G. O.
, Gordeev N. Y.
3, Payusov A. S.
3, Shernyakov Y. M.
3, Beckman A. A. , Simchuk O. I. 1, Tkach Yu.S.1, Maximov M. V. 1
1Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Sciences, St. Petersburg, Russia
2HSE University, St. Petersburg, Russia
3Ioffe Institute, St. Petersburg, Russia
2HSE University, St. Petersburg, Russia
3Ioffe Institute, St. Petersburg, Russia
Email: antoshkerrr@gmail.com, al.nadtochy@mail.ioffe.ru, gk@mail.ioffe.ru, gordeev@switch.ioffe.ru, plusov@mail.ioffe.ru, yuri.shernyakov@mail.ioffe.ru
The spatial distribution of pump current in the active region of a quantum well-dot semiconductor optical amplifier was experimentally determined by identifying boundaries separating gain and absorption zones under varying injection currents and input wavelengths. The spatial non-homogeneity of the pump current distribution for a 5 μm-wide waveguide was found to be less than 14%. Keywords: quantum well-dots, semiconductor optical amplifiers, transparency current, non-homogeneity of gain,spatial distribution.
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