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2017
Journal Article
Titel
Measuring thermal load in fiber amplifiers in the presence of transversal mode instabilities
Abstract
We report on detailed in situ distributed temperature measurements inside a high power fiber amplifier. The deducted thermal load and the transversal mode instability (TMI) threshold of a commercial large mode area fiber with 25 mu m core and 400 mu m cladding were measured at various seed wavelengths. By matching these results with detailed simulations we show that photodarkening has a negligible impact on the thermal load and, therefore, on the TMI threshold in this fiber.
Project(s)
MIMAS