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Passive coherent combination of two ultrafast rod type fiber chirped pulse amplifiers |
Optics Letters, Vol. 37, Issue 9, pp. 1460-1462 (2012)
http://dx.doi.org/10.1364/OL.37.001460
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Abstract
Using passive coherent beam combining of two ultrafast fiber amplifiers, we demonstrate the generation of high temporal quality 300 fs and 650 μJ pulses corresponding to 60 W of average power at a repetition rate of 92 kHz. Furthermore, at 2 MHz of repetition rate record coherent combining average powers of 135 W before and 105 W after compression are measured. A combining efficiency higher than 90% is maintained over the whole range of output powers and repetition rates investigated demonstrating the efficiency and robustness of the passive combining technique. The measured pulse-to-pulse relative power fluctuation at high energy is 2%, indicating that the system is essentially immune to environmental phase noise. We believe the passive combining method to be an attractive approach for compact multi-GW peak power femtosecond fiber-based sources.
© 2012 Optical Society of America
OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(140.3280) Lasers and laser optics : Laser amplifiers
(140.7090) Lasers and laser optics : Ultrafast lasers
(140.3615) Lasers and laser optics : Lasers, ytterbium
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: December 28, 2011
Revised Manuscript: February 14, 2012
Manuscript Accepted: February 24, 2012
Published: April 24, 2012
Virtual Issues
Vol. 7, Iss. 7 Virtual Journal for Biomedical Optics
Citation
Y. Zaouter, L. Daniault, M. Hanna, D. N. Papadopoulos, F. Morin, C. Hönninger, F. Druon, E. Mottay, and P. Georges, "Passive coherent combination of two ultrafast rod type fiber chirped pulse amplifiers," Opt. Lett. 37, 1460-1462 (2012)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-37-9-1460
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