Abstract
This paper presents theoretical and experimental studies of ultrabright internal second harmonic during femtosecond superradiant emission generation in multiple sections GaAs/AlGaAs laser structures at room temperature. Experimentally measured conversion efficiencies are by 1-2 orders of magnitude greater than expected. To explain this fact, a model based on one-dimensional nonlinear Maxwell curl equations without taking into consideration the slowly-varying envelope approximation has been developed. It has been demonstrated that strong transient periodic modulation of e-h density and refraction index dramatically affects the process of superradiance in semiconductor media and can explain the ultrastrong internal second harmonic generation.
Original language | English |
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Pages (from-to) | 26156-26166 |
Number of pages | 11 |
Journal | Optics Express |
Volume | 26 |
Issue number | 20 |
Early online date | 21 Sept 2018 |
DOIs | |
Publication status | Published - 1 Oct 2018 |
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics