Spatio-Temporal Modeling and Device Optimization of Passively Mode-Locked Semiconductor Lasers

This thesis investigates passively mode-locked semiconductor lasers by numerical methods, focusing on the development of efficient models and visualization techniques to understand and optimize these devices for optical data communication and dual comb spectroscopy. The simulations closely tie in with experimental results, enabling the understanding of emission dynamics in terms of cavity geometry and active medium dynamics. The models are also used for laser design explorations and recommendations for further optimizations.

Format: Paperback / softback
Length: 251 pages
Publication date: 30 March 2023
Publisher: Springer Nature Switzerland AG

This thesis delves into the realm of passively mode-locked semiconductor lasers through numerical methodologies, with a primary focus on understanding and optimizing these devices for advancements in technologies like optical data communication and dual comb spectroscopy. The central objective of the thesis is to develop efficient numerical models capable of conducting comprehensive parameter studies and providing quantitative predictions. Alongside this, novel visualization and evaluation techniques are developed to facilitate a deeper physical interpretation of the observed laser dynamics.

The investigations in this thesis revolve around two specific semiconductor devices: a monolithically integrated three-section tapered quantum-dot laser and a V-shaped external cavity laser. These simulations are meticulously aligned with experimental results obtained in collaboration with the Technical University of Darmstadt and the ETH Zurich. Through the successful numerical reproduction of these experimental findings, the emission dynamics of both lasers are elucidated in terms of the cavity geometry and the active medium dynamics. Notably, the latter highlights the significance of the developed simulation tools, as the fast charge-carrier dynamics are typically not accessible during mode-locking operation.

Furthermore, the numerical models are employed to explore laser design possibilities and derive recommendations for further optimizations. By employing these comprehensive numerical approaches, this thesis contributes to the advancement of our understanding and utilization of passively mode-locked semiconductor lasers, paving the way for innovative applications in diverse fields.

Weight: 421g
Dimension: 235 x 155 (mm)
ISBN-13: 9783030962500
Edition number: 1st ed. 2022