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Impact of spectral phase mismatch on femtosecond coherent beam combining systems

Abstract : We experimentally investigate the impact of spectral phase mismatch on the coherent beam combining of two femtosecond fiber chirped-pulse amplifiers. By measuring the differential spectral phase, both linear and nonlinear contributions are identified. An accumulated nonlinear phase as high as 6 rad has been measured, for which a combination efficiency of 91% can be obtained by symmetrizing the pump and injection powers. This also allows us to quantitatively separate the spatial and temporal contributions of the nonperfect combining efficiency.
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https://hal-iogs.archives-ouvertes.fr/hal-00702163
Contributor : Marc Hanna <>
Submitted on : Tuesday, May 29, 2012 - 2:36:46 PM
Last modification on : Wednesday, September 16, 2020 - 5:38:32 PM
Long-term archiving on: : Thursday, August 30, 2012 - 2:22:53 AM

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Louis Daniault, Marc Hanna, Laurent Lombard, Yoann Zaouter, Eric Mottay, et al.. Impact of spectral phase mismatch on femtosecond coherent beam combining systems. Optics Letters, Optical Society of America, 2012, 37 (4), pp.650-652. ⟨hal-00702163⟩

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