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  4. Wavelength dependence of maximal diffraction-limited output power of fiber lasers
 
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2015
Conference Paper
Title

Wavelength dependence of maximal diffraction-limited output power of fiber lasers

Abstract
The threshold-like onset of mode instabilities is currently the main limitation for the scaling of the average output power of fiber-laser systems with diffraction limited beam quality. In this contribution wavelength shifting of the seed signal has been experimentally investigated in order to mitigate mode instabilities. Against the expectations, it is experimentally shown that the highest mode instabilities threshold is reached around 1030 nm and not for the smallest wavelength separation between pump and signal wavelength. This finding implies that the quantum defect is not the sole significant source for thermal heating in the fiber.
Author(s)
Otto, H.J.
Modsching, Norbert
Jauregui, Cesar
Limpert, Jens  
Tünnermann, Andreas  
Mainwork
Fiber Lasers XII. Technology, Systems, and Applications  
Conference
Conference "Fiber Lasers - Technology, Systems, and Applications" 2015  
DOI
10.1117/12.2076894
Language
English
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF  
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