title: Coherent pulse stacking amplification using low-finesse Gires-Tournois interferometers.
abstract: We demonstrate a new technique of coherent pulse stacking (CPS) amplification to overcome limits on achievable pulse energies from optical amplifiers. CPS uses reflecting resonators without active cavity-dumpers to transform a sequence of phase- and amplitude-modulated optical pulses into a single output pulse. Experimental validation with a single reflecting resonator demonstrates a near-theoretical stacked peak-power enhancement factor of ~2.5 with 92% and 97.4% efficiency for amplified nanosecond and femtosecond pulses. We also show theoretically that large numbers of equal-amplitude pulses can be stacked using sequences of multiple reflecting resonators, thus providing a new path for generating very high-energy pulses from ultrashort pulse fiber amplifier systems.
authors.forename: Tong
authors.initials: T
authors.lastname: Zhou
authors.forename: John
authors.initials: J
authors.lastname: Ruppe
authors.forename: Cheng
authors.initials: C
authors.lastname: Zhu
authors.forename: I-Ning
authors.initials: IN
authors.lastname: Hu
authors.forename: John
authors.initials: J
authors.lastname: Nees
authors.forename: Almantas
authors.initials: A
authors.lastname: Galvanauskas