title: Two-channel pulse synthesis to overcome gain narrowing in femtosecond fiber amplifiers.
abstract: We demonstrate spectral coherent beam combining of two femtosecond fiber chirped-pulse amplifiers seeded by a common oscillator. Using active phase stabilization based on an electro-optic phase modulator, an average power of 10 W before compression and a high gain factor of 30 dB are obtained. At this gain value, 130 fs pulses with a spectral width of 19 nm can be generated, highlighting the strong potential of pulse synthesis for the reduction of the minimum duration of ultrashort pulses in fiber chirped-pulse amplifiers.
authors.forename: Florent
authors.initials: F
authors.lastname: Guichard
authors.forename: Marc
authors.initials: M
authors.lastname: Hanna
authors.forename: Laurent
authors.initials: L
authors.lastname: Lombard
authors.forename: Yoann
authors.initials: Y
authors.lastname: Zaouter
authors.forename: Clemens
authors.initials: C
authors.lastname: Hönninger
authors.forename: Franck
authors.initials: F
authors.lastname: Morin
authors.forename: Frédéric
authors.initials: F
authors.lastname: Druon
authors.forename: Eric
authors.initials: E
authors.lastname: Mottay
authors.forename: Patrick
authors.initials: P
authors.lastname: Georges