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Effect of carrier dynamics and temperature on two-state lasing in semiconductor quantum dot lasers
Authors:V. V. Korenev  A. V. Savelyev  A. E. Zhukov  A. V. Omelchenko  M. V. Maximov
Affiliation:1. Saint Petersburg Academic University—Nanotechnology Research and Education Center, ul. Khlopina 8/3, St. Petersburg, 194021, Russia
2. Saint Petersburg State Polytechnical University, ul. Politekhnicheskaya 29, St. Petersburg, 195251, Russia
3. Ioffe Physical-Technical Institute, Russian Academy of Sciences, ul. Politekhnicheskaya 26, St.Petersburg, 194021, Russia
Abstract:It is analytically shown that the both the charge carrier dynamics in quantum dots and their capture into the quantum dots from the matrix material have a significant effect on two-state lasing phenomenon in quantum dot lasers. In particular, the consideration of desynchronization in electron and hole capture into quantum dots allows one to describe the quenching of ground-state lasing observed at high injection currents both qualitatevely and quantitatively. At the same time, an analysis of the charge carrier dynamics in a single quantum dot allowed us to describe the temperature dependences of the emission power via the ground- and excited-state optical transitions of quantum dots.
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