title: All-passive phase locking of a compact Er:fiber laser system.
abstract: A passively phase-locked laser source based on compact femtosecond Er:fiber technology is introduced. The carrier-envelope offset frequency is set to zero via difference frequency generation between a soliton at a wavelength of 2 μm and a dispersive wave at 860 nm generated in the same highly nonlinear fiber. This process results in a broadband output centered at 1.55 μm. Subsequently, the 40 MHz pulse train seeds a second Er:fiber amplifier, which boosts the pulse energy up to 8 nJ at a duration of 125 fs. Excellent phase stability is demonstrated via f-to-2f spectral interferometry.
authors.affiliation: Department of Physics, University of Konstanz, Konstanz, Germany.
authors.forename: Günther
authors.initials: G
authors.lastname: Krauss
authors.forename: David
authors.initials: D
authors.lastname: Fehrenbacher
authors.forename: Daniele
authors.initials: D
authors.lastname: Brida
authors.forename: Claudius
authors.initials: C
authors.lastname: Riek
authors.forename: Alexander
authors.initials: A
authors.lastname: Sell
authors.forename: Rupert
authors.initials: R
authors.lastname: Huber
authors.forename: Alfred
authors.initials: A
authors.lastname: Leitenstorfer