title: Phase-matched generation of coherent soft X-rays
abstract: Phase-matched harmonic conversion of visible laser light into soft x-rays was demonstrated. The recently developed technique of guided-wave frequency conversion was used to upshift light from 800 nanometers to the range from 17 to 32 nanometers. This process increased the coherent x-ray output by factors of 10(2) to 10(3) compared to the non-phase-matched case. This source uses a small-scale (sub-millijoule) high repetition-rate laser and will enable a wide variety of new experimental investigations in linear and nonlinear x-ray science.
authors.affiliation: Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, MI 48109-2099, USA.
authors.initials: A
authors.lastname: Rundquist
authors.initials: CG
authors.lastname: Durfee
authors.initials: Z
authors.lastname: Chang
authors.initials: C
authors.lastname: Herne
authors.initials: S
authors.lastname: Backus
authors.initials: MM
authors.lastname: Murnane
authors.initials: HC
authors.lastname: Kapteyn