Detailed investigations on thermal mode instabilities in LMA Yb-doped fibers

Beier F, Sattler B, Liem A, Haarlammert N, Schreiber T, Eberhardt R, Tunnermann A (2017)

Publication Type: Conference contribution

Publication year: 2017

Publisher: Optica Publishing Group (formerly OSA)

Conference Proceedings Title: Optics InfoBase Conference Papers

Event location: Nagoya, JPN

ISBN: 9781557528209

Abstract

We present our investigations on modal instabilities using a commercial LMA fiber with 25 um core and 400 um cladding. The transversal mode instability (TMI) threshold is measured for different seed wavelengths and bending diameters in a systematic way. Additionally, in-situ temperature measurements up to the TMI threshold allowed measuring the longitudinal resolved thermal load and, thereby, fixing parameters for simulations that match experimental values. In conclusion, we derive driving parameters for TMI and found that photodarkening has a negligible impact on TMI 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., Sattler, B., Liem, A., Haarlammert, N., Schreiber, T., Eberhardt, R., & Tunnermann, A. (2017). Detailed investigations on thermal mode instabilities in LMA Yb-doped fibers. In Optics InfoBase Conference Papers. Nagoya, JPN: Optica Publishing Group (formerly OSA).

MLA:

Beier, Franz, et al. "Detailed investigations on thermal mode instabilities in LMA Yb-doped fibers." Proceedings of the Laser Applications Conference, LAC 2017, Nagoya, JPN Optica Publishing Group (formerly OSA), 2017.

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