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Influence of disk aberrations on high-power thin-disk laser cavities
Optics Express
|October 27, 2022
Summary
Deviations from radial symmetry in thin-disk aberrations significantly limit thin-disk laser oscillator performance. Understanding these aberrations is crucial for scaling high-power, modelocked thin-disk lasers.
Area of Science:
- Laser Physics
- Optical Engineering
Background:
- Thin-disk laser oscillators are essential for high-power applications.
- Understanding intracavity aberrations is critical for optimizing laser performance.
Purpose of the Study:
- To systematically investigate the impact of thin-disk aberrations on laser oscillator performance.
- To develop a predictive model for thin-disk laser behavior considering phase profiles.
Main Methods:
- Developed a spatially resolved numerical model for thin-disk lasers.
- Incorporated experimentally measured phase profiles of the thin-disk.
- Validated model predictions against experimental observations of mode degradation and stability.
Main Results:
- Thin-disk aberrations, particularly deviations from radial symmetry, significantly degrade laser performance.
- The model accurately predicts mode degradation, higher-order mode coupling, and reduced stability zones.
- Identified asymmetric phase profiles as a key limiting factor in laser output.
Conclusions:
- Asymmetric thin-disk aberrations are a primary performance limitation for thin-disk laser oscillators.
- Accurate modeling of phase profiles is vital for predicting and improving laser operation.
- These findings are critical for advancing kW-level modelocked thin-disk lasers and future cavity designs.
