Inband-pumped, high-power thulium-doped fiber amplifiers for an ultrafast pulsed operation
Lenski M, Heuermann T, Gebhardt M, Wang Z, Gaida C, Jauregui C, Limpert J (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 30
Pages Range: 44270-44282
Journal Issue: 24
DOI: 10.1364/OE.476160
Abstract
We investigate the influence of the pump wavelength on the high-power amplification of large-mode area, thulium-doped fibers which are suitable for an ultrashort pulsed operation in the 2 µm wavelength region. By pumping a standard, commercially available photonic crystal fiber in an amplifier configuration at 1692 nm, a slope efficiency of 80 % at an average output power of 60 W could be shown. With the help of simulations we investigate the effect of cross-relaxations on the efficiency and the thermal behavior. We extend our investigations to a rod-type, large-pitch fiber with very large mode area, which is exceptionally suited for high-energy ultrafast operation. Pumping at 1692 nm leads to a slope efficiency of 74 % with a average output power of 67 W, instead of the 38 % slope efficiency obtained when pumping at 793 nm. These results pave the way to highly efficient 2 µm fiber-based CPA systems.
Involved external institutions
Germany (DE)How to cite
APA:
Lenski, M., Heuermann, T., Gebhardt, M., Wang, Z., Gaida, C., Jauregui, C., & Limpert, J. (2022). Inband-pumped, high-power thulium-doped fiber amplifiers for an ultrafast pulsed operation. Optics Express, 30(24), 44270-44282. https://doi.org/10.1364/OE.476160
MLA:
Lenski, Mathias, et al. "Inband-pumped, high-power thulium-doped fiber amplifiers for an ultrafast pulsed operation." Optics Express 30.24 (2022): 44270-44282.
BibTeX: Download