title: Fully efficient adiabatic frequency conversion of broadband Ti:sapphire oscillator pulses.
abstract: By adiabatic difference-frequency generation in an aperiodically poled nonlinear crystal-a nonlinear optical analog of rapid adiabatic passage in a two-level atomic system-we demonstrate the conversion of a 110 nm band from an octave-spanning Ti:sapphire oscillator to the infrared, spanning 1550 to 2450 nm, with near-100% internal conversion efficiency. The experiment proves the principle of complete Landau-Zener adiabatic transfer in nonlinear optical wave mixing. Our implementation is a practical approach to the seeding of high-energy ultrabroadband optical parametric chirped pulse amplifiers.
authors.affiliation: Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. j_moses@mit.edu
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Moses
authors.forename: Haim
authors.initials: H
authors.lastname: Suchowski
authors.forename: Franz X
authors.initials: FX
authors.lastname: Kärtner