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

This thesis investigates passively mode-locked semiconductor lasers using numerical methods to understand and optimize these devices for optical data communication and dual comb spectroscopy. The simulations are closely tied to experimental results,and the models are used to perform laser design explorations and derive recommendations for further optimizations.

Format: Hardback
Length: 251 pages
Publication date: 29 March 2022
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. Through meticulous simulations, these devices are closely aligned with experimental results obtained in collaboration with the Technical University of Darmstadt and the ETH Zurich. By successfully reproducing the experimental findings, the emission dynamics of both lasers are elucidated in terms of the cavity geometry and the active medium dynamics. Notably, the developed simulation tools shine as they enable the exploration of fast charge-carrier dynamics, which are typically not accessible during mode-locking operation.

Furthermore, the numerical models serve as a valuable tool for laser design explorations, leading to recommendations for further optimizations. By leveraging the power of numerical simulations, researchers can gain insights into the intricate behavior of semiconductor lasers and tailor their designs to achieve improved performance and functionality. This thesis contributes to the ongoing development of passively mode-locked semiconductor lasers, paving the way for innovative applications in communication, sensing, and other fields.

Weight: 576g
Dimension: 235 x 155 (mm)
ISBN-13: 9783030962470
Edition number: 1st ed. 2022