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Highly stable fiber lasers for satellite-based gravitational measurements

: Fitzau, O.; Betz, P.; Cebeci, P.; Giesberts, M.; Hoffmann, H.D.; Schiemangk, M.; Wicht, A.; Sanjuan, J.; Dahl, K.; Pyka, S.A.; Kovalchuk, E.; Peters, A.


Carter, A.L. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Fiber Lasers XVI: Technology and Systems : 4-7 February 2019, San Francisco, California, United States
Bellingham, WA: SPIE, 2019 (Proceedings of SPIE 10897)
ISBN: 978-1-5106-2437-5
ISBN: 978-1-5106-2436-8
Art. 108972H, 11 pp.
Conference "Fiber Lasers - Technology and Systems <16, 2019, San Francisco/Calif.>
Industrial Laser, Laser Source and Laser Applications Conference (LASE) <2019, San Francisco/Calif.>
Photonics West Conference <2019, San Francisco/Calif.>
Conference Paper
Fraunhofer ILT ()

For studies of the European Space Agency ESA, Fraunhofer ILT develops and builds narrowband, power-stabilized fundamental mode fiber amplifiers especially for future space-based gravitational-wave detectors, e.g. LISA, and for Earth gravity field missions. In this paper, we present the status of our ongoing work, based on a highly stable fiber amplifier designed for a Next Generation Gravity field Mission (NGGM) pre-study, towards power scaling as well as enhancement of the Technology Readiness Level (TRL). Our amplifier has already demonstrated to meet the requirements for future gravity field missions. It features a design that is free of stimulated Brillouin scattering (SBS) and a feedback loop for power stabilization.