By Christian Otto
This thesis bargains with the dynamics of state of the art nanophotonic semiconductor constructions, delivering crucial details on basic elements of nonlinear dynamical structures at the one hand, and technological functions in sleek telecommunication at the different. 3 diverse advanced laser constructions are thought of intimately: (i) a quantum-dot-based semiconductor laser lower than optical injection from a grasp laser, (ii) a quantum-dot laser with optical suggestions from an exterior resonator, and (iii) a passively mode-locked quantum-well semiconductor laser with saturable absorber lower than optical suggestions from an exterior resonator. utilizing a extensive spectrum of equipment, either numerical and analytical, this paintings achieves new basic insights into the interaction of microscopically dependent nonlinear laser dynamics and optical perturbations via not on time suggestions and injection.
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Extra info for Dynamics of Quantum Dot Lasers: Effects of Optical Feedback and External Optical Injection
3) and the analysis of the QD laser subject to optical feedback (Chap. 4). Furthermore, the dynamic equations are formulated such that a small time scale separation parameter γ multiplies the right hand side of the carrier equations (cf. Eqs. 4)). 2 Steady States of Solitary Quantum Dot (QD) Laser Now, the solitary QD laser Eqs. 4) are analyzed starting with the steady states. For the subsequent analysis, the spontaneous emission in the field Eqs. 4) is neglected by setting d = 0. Equating to zero the right hand sides of Eqs.
5a–c. , decreasing τe−1 , leads to a strong decrease of the RO damping, which results in a reappearance of the ROs. For very large values of the scattering rates, RO damping and RO frequency saturate to constant values denoted by the horizontal black dashed line and the horizontal red dashed line, respectively. The turn-on dynamics in the limit of very fast scattering rates is depicted in Fig. 5d. For slow, reference, and fast scattering rates, the reservoir populations We and Wh vary very little above lasing threshold.
P. Bormann, P. Hövel, E. Schöll, A. Knorr, M. Kuntz, D. Bimberg, Theory of relaxation oscillations in semiconductor quantum dot lasers. Appl. Phys. Lett. 89, 101107 (2006). 2346224 References 43 9. E. P. Bormann, P. Hövel, M. Kuntz, D. Bimberg, A. Knorr, E.