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Electro-optically controlled divided-pulse amplification

: Müller, M.; Wojdyr, M.; Kienel, M.; Klenke, A.; Limpert, J.; Tünnermann, A.


Ballato, J. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Fiber Lasers XIII. Technology, Systems, and Applications. Proceedings : 3-18 February 2016, San Francisco, California, United States
Bellingham, WA: SPIE, 2016 (Proceedings of SPIE 9728)
ISBN: 978-1-62841-963-4
Art. 97282J
Conference "Fiber Lasers - Technology, Systems, and Applications" <13, 2016, San Francisco/Calif.>
Fraunhofer IOF ()

We present a spatial and temporal coherent-beam-combination system based on a fiber-integrated front-end, electro-optical components, and optical delay lines. The system features a larger scaling potential, enhanced stability and reduced alignment sensitivity compared to known divided-pulse amplification schemes. In a proof-of-principle experiment combining 4 pulses, a combining efficiency larger than 95% and a high amplitude stability are demonstrated. The efficiency is largely independent of the combined pulse energy and the temporal pulse contrast is better than 20 dB.