Eur. Phys. J. Special Topics 224, 2545-2549 (2015)
https://doi.org/10.1140/epjst/e2015-02563-y

Regular Article

Spectral pulse synthesis in large-scale ultrafast coherent combining systems

¹ Laboratoire Charles Fabry, Institut d'Optique, CNRS, Université Paris-Sud, 2 Av. Augustin Fresnel, 91127 Palaiseau Cedex, France
² Amplitude Systèmes, 11 avenue de Canteranne, Cité de la Photonique, 33600 Pessac, France
³ Office National d'Etudes et de Recherches Aérospatiales, Département d'Optique Théoriques et Appliquée, Chemin de la Hunière, 91761 Palaiseau, France

^a e-mail: florent.guichard@institutoptique.fr

Received: 17 June 2014
Revised: 31 August 2015
Published online: 26 October 2015

Abstract

We propose the use of coherent spectral synthesis to reach shorter pulse durations in the context of massively parallel femtosecond coherent combining laser systems. A preliminary experiment that performs spectral synthesis with two femtosecond fiber chirped-pulse amplifiers is presented, and shows that a significant decrease of the amplified pulse duration compared to single-band amplification is achieved. We also discuss possible implementation of spectral synthesis in a large-scale coherent combining setup.