期刊
OPTICS LETTERS
卷 36, 期 23, 页码 4572-4574出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.36.004572
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资金
- German Federal Ministry of Education and Research (BMBF)
- Helmholtz-Institute Jena (HIJ)
- European Research Council (ERC) under the European Union (EU) [240460]
- Abbe School of Photonics Jena
- European Research Council (ERC) [240460] Funding Source: European Research Council (ERC)
A high-speed mode analysis technique is required to gain fundamental understanding of mode instabilities in high-power fiber laser systems. In this work a technique, purely based on the intensity profile of the beam, is demonstrated to be ideally suited to analyze fiber laser dynamics. This technique, together with a high-speed camera, has been applied to the study of the temporal dynamics of mode instabilities at high average powers with up to 20,000 frames per second. These measurements confirm that energy transfer between the fluctuating transversal modes takes place in millisecond-time-scale. (C) 2011 Optical Society of America
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