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25 - 30 January 2025
San Francisco, California, US
Conference 13342 > Paper 13342-27
Paper 13342-27

Transfer functions of thulium-doped fiber amplifiers for in-band and out-of-band pumping

29 January 2025 • 9:40 AM - 10:00 AM PST | Moscone South, Room 156 (Upper Mezz)

Abstract

Gain dynamics play a crucial role in the design of laser oscillators and amplifiers. In order to expand the understanding of gain dynamics into the spectral 2 μm region, this study presents the experimental characterization of transfer functions in thulium-doped fiber amplifiers associated with the 3F4 → 3H6 transition that governs emission in this spectral range. We investigate the transfer functions regarding magnitude and phase for out-of-band pumping at 790 nm by populating the 3H4 level. The results are in particular useful to determine the effective frequency for power scaled thulium-doped fiber amplifiers based double-clad geometry.

Presenter

Laser Zentrum Hannover e.V. (Germany)
Presenter/Author
Laser Zentrum Hannover e.V. (Germany)
Author
Frithjof Haxsen
Laser Zentrum Hannover e.V. (Germany)
Author
Laser Zentrum Hannover e.V. (Germany), Leibniz Univ. Hannover (Germany)
Author
Laser Zentrum Hannover e.V. (Germany), Leibniz Univ. Hannover (Germany)
Author
Laser Zentrum Hannover e.V. (Germany), Leibniz Univ. Hannover (Germany)