title: Highly efficient mid-infrared difference-frequency generation using synchronously pulsed fiber lasers.
abstract: We report the development of a high average power, picosecond-pulse, mid-infrared source based on difference-frequency generation (DFG) of two synchronous master oscillator power fiber amplifier systems. The generated idler can be tuned over the range 3.28-3.45 μm delivering greater than 3.4 W of average power, with a maximum pump to total DFG power conversion efficiency of 78%. The benefits of a synchronously pumped scheme, compared to CW seeding of DFG sources, are discussed.
authors.forename: R T
authors.initials: RT
authors.lastname: Murray
authors.forename: T H
authors.initials: TH
authors.lastname: Runcorn
authors.forename: E J R
authors.initials: EJ
authors.lastname: Kelleher
authors.forename: J R
authors.initials: JR
authors.lastname: Taylor