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Proceedings Paper

Highly stable, high power hybrid fiber and Innoslab amplifier for narrow linewidth signals
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Paper Abstract

Based on our study of a high stability ultra-narrow linewidth fiber amplifier for the gravitational wave detector LISA, we have set up a hybrid fiber and Innoslab amplifier for further power scaling into <100 Watt regime. The fiber amplifier can provide a seed power of up to 8 W at 1064 nm and a linewidth <10 kHz. The booster stage consists of an in-band pumped Innoslab amplifier, which is pumped by stabilized laser diodes at 880 nm. An output power of 437 W has already been demonstrated with almost diffraction-limited beam quality. Further investigations of power stability and modal properties are currently ongoing.

Paper Details

Date Published: 4 March 2020
PDF: 7 pages
Proc. SPIE 11259, Solid State Lasers XXIX: Technology and Devices, 112590L (4 March 2020); doi: 10.1117/12.2545934
Show Author Affiliations
P. Cebeci, Fraunhofer-Institut für Lasertechnik ILT (Germany)
J. V. Mosquera, Fraunhofer-Institut für Lasertechnik ILT (Germany)
M. Höfer, Fraunhofer-Institut für Lasertechnik ILT (Germany)
O. Fitzau, Fraunhofer-Institut für Lasertechnik ILT (Germany)
M. Giesberts, Fraunhofer-Institut für Lasertechnik ILT (Germany)
B. Erben, Fraunhofer-Institut für Lasertechnik ILT (Germany)
H.-D. Hoffmann, Fraunhofer-Institut für Lasertechnik ILT (Germany)


Published in SPIE Proceedings Vol. 11259:
Solid State Lasers XXIX: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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