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13 March 2019 Diagnostics and design parameters for kW-class Yb fiber lasers (Conference Presentation)
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Abstract
Fiber lasers have experienced an explosive growth in output power over the last decade, enabling multi-kW output powers with nearly diffraction-limited beam quality. Transverse Mode Instability (TMI) is currently the ultimate limitation in average power scaling of CW fiber lasers. Therefore, new fiber designs and amplifier geometries will be required in the future to overcome TMI-induced limitations. To explore the parameter space, we have constructed several kW-class fiber amplifiers to examine the effects of different fiber designs and amplifier geometries using both commercially available fiber as well as custom, in-house drawn Yb-doped fiber. Investigations are ongoing which explore the effects of variations in the cladding diameter, core NA and fiber length. Results are presented which investigate the roles the cladding diameter and core NA play in system design with regard to thermal management and beam quality management, respectively. Finally, we will present our current progress towards long range, outdoor laser propagation at our TISTEF laser facility.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Justin Cook, Alex Sincore, Jose Enrique Antonio-Lopez, Stefan Gausmann, Axel Schülzgen, Rodrigo Amezcua-Correa, and Martin Richardson "Diagnostics and design parameters for kW-class Yb fiber lasers (Conference Presentation)", Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 1089715 (13 March 2019); https://doi.org/10.1117/12.2513505
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