Stability and noise in frequency combs: efficient and accurate computation using dynamical methods
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Author/Creator ORCID
Date
2022-11-02
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Citation of Original Publication
Curtis R. Menyuk, Shaokang Wang, "Stability and noise in frequency combs: efficient and accurate computation using dynamical methods," Proc. SPIE 12273, High-Power Lasers and Technologies for Optical Countermeasures, 1227304 (2 November 2022); https://doi.org/10.1117/12.2644162
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©2022 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited
Subjects
Abstract
Key issues in the design of any passively modelocked laser system are determining the parameter ranges within
which it can operate stably, determining its noise perfomance, and then optimizing the design to achieve the best
possible output pulse parameters. Here, we review work within our research group to use computational methods
based on dynamical systems theory to accurately and efficiently address these issues. These methods are typically
many orders of magnitude faster than widely used evolutionary methods. We then review our application of
these methods to the analysis and design of passively modelocked fiber lasers that use a semiconductor saturable
absorbing mirror (SESAM). These lasers are subject to a wake instability in which modes can grow in the wake
of the modelocked pulse and destroy it. Even when stable, the wake modes can lead to undesirable radiofrequency sidebands. We demonstrate that the dynamical methods have an advantage of more than three orders
of magnitude over standard evolutionary methods for this laser system. After identifying the stable operating
range, we take advantage of the computational speed of these methods to optimize the laser performance over a
three-dimensional parameter space.