Influence of disk aberrations on high-power thin-disk laser cavities
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Date
2022-10
Publication Type
Journal Article
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yes
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Abstract
We present a systematic study on the influence of thin-disk aberrations on the performance of thin-disk laser oscillators. To evaluate these effects, we have developed a spatially resolved numerical model supporting arbitrary phase profiles on the intracavity components that estimates the intracavity beam shape and the output power of thin-disk laser oscillators. By combining this model with the experimentally determined phase profile of the thin-disk (measured with interferometry), we can predict the operation mode of high-power thin-disk lasers, including mode degradation, higher-order mode coupling, and stability zone shrinking, all of which are in good agreement with experiment. Our results show that one of the main mechanisms limiting the performance is the small deviation of the disk’s phase profile from perfect radial symmetry. This result is an important step to scaling modelocked thin-disk oscillators to the kW-level and will be important in the design of future active multi-pass cavity arrangements.
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published
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Journal / series
Volume
30 (22)
Pages / Article No.
39691
Publisher
Optica
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Edition / version
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Date collected
Date created
Subject
Thin-disk laser (TDL); High-power lasers; Aberrations; Thin-disk
Organisational unit
03371 - Keller, Ursula (emeritus) / Keller, Ursula (emeritus)
Notes
Funding
200416 - High repetition rate attosecond pulse generation (SNF)
Related publications and datasets
Is supplemented by: https://doi.org/10.3929/ethz-b-000576537