title: A higher-order-mode fiber delivery for Ti:Sapphire femtosecond lasers.
abstract: We report the first higher-order-mode fiber with anomalous dispersion at 800nm and demonstrate its potential in femtosecond pulse delivery for Ti:Sapphire femtosecond lasers. We obtain 125fs pulses after propagating a distance of 3.6 meters in solid-silica fiber. The pulses could be further compressed in a quartz rod to nearly chirp-free 110fs pulses. Femtosecond pulse delivery is achieved by launching the laser output directly into the delivery fiber without any pre-chirping of the input pulse. The demonstrated pulse delivery scheme suggests scaling to >20meters for pulse delivery in harsh environments not suited for oscillator operation or in applications that require long distance flexibility.
authors.affiliation: OFS Fitel Denmark, Priorparken 680, 2605 Broendby, Denmark. kjespersen@ofsoptics.com
authors.forename: Kim G
authors.initials: KG
authors.lastname: Jespersen
authors.forename: Tuan
authors.initials: T
authors.lastname: Le
authors.forename: Lars
authors.initials: L
authors.lastname: Grüner-Nielsen
authors.forename: Dan
authors.initials: D
authors.lastname: Jakobsen
authors.forename: Martin E V
authors.initials: ME
authors.lastname: Pederesen
authors.forename: Mikkel B
authors.initials: MB
authors.lastname: Smedemand
authors.forename: Søren R
authors.initials: SR
authors.lastname: Keiding
authors.forename: Bera
authors.initials: B
authors.lastname: Palsdottir