Characterization of transverse mode instability with a 4-quadrant photodiode
Kholaif S, Jauregui C, Tu Y, Limpert J (2023)
Publication Type: Journal article
Publication year: 2023
Journal
Book Volume: 31
Pages Range: 10633-10644
Journal Issue: 6
DOI: 10.1364/OE.478961
Abstract
Transverse mode instability (TMI) represents the main limitation for the power scaling of fiber laser systems with a diffraction-limited beam quality. In this context, it has become increasingly important to find a cheap and reliable way to monitor and characterize TMI and distinguish this effect from other dynamic perturbations. In this work, with the help of a position-sensitive detector, a novel method is developed to characterize the TMI dynamics even in the presence of power fluctuations. The position information of the fluctuating beam is recorded in the X- and Y-axis of the detector, which are used to track the temporal evolution of the center of gravity of the beam. The trajectories described by the beam within a specific time window contain rich information about TMI, which can be used to gain further insight into this phenomenon.
Involved external institutions
Germany (DE)How to cite
APA:
Kholaif, S., Jauregui, C., Tu, Y., & Limpert, J. (2023). Characterization of transverse mode instability with a 4-quadrant photodiode. Optics Express, 31(6), 10633-10644. https://dx.doi.org/10.1364/OE.478961
MLA:
Kholaif, Sobhy, et al. "Characterization of transverse mode instability with a 4-quadrant photodiode." Optics Express 31.6 (2023): 10633-10644.
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