Measuring thermal load in fiber amplifiers in the presence of transversal mode instabilities

Beier F, Ploetner M, Sattler B, Stutzki F, Walbaum T, Liem A, Haarlammert N, Schreiber T, Eberhardt R, Tuennermann A (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Optics Letters Optical Society of America

Book Volume: 42

Pages Range: 4311-4314

Journal Issue: 21

DOI: 10.1364/OL.42.004311

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 μm core and 400 μm 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.

Involved external institutions

Fraunhofer-Institut für Angewandte Optik und Feinmechanik (IOF) / Fraunhofer Institute for Applied Optics and Precision Engineering DE Germany (DE)

How to cite

APA:

Beier, F., Ploetner, M., Sattler, B., Stutzki, F., Walbaum, T., Liem, A.,... Tuennermann, A. (2017). Measuring thermal load in fiber amplifiers in the presence of transversal mode instabilities. Optics Letters, 42(21), 4311-4314. https://dx.doi.org/10.1364/OL.42.004311

MLA:

Beier, Franz, et al. "Measuring thermal load in fiber amplifiers in the presence of transversal mode instabilities." Optics Letters 42.21 (2017): 4311-4314.

BibTeX: Download