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Science 29 May 1998:
Vol. 280. no. 5368, pp. 1412 - 1415
DOI: 10.1126/science.280.5368.1412
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Reports

Phase-Matched Generation of Coherent Soft X-rays

Andy Rundquist, Charles G. Durfee III, Zenghu Chang, Catherine Herne, Sterling Backus, Margaret M. Murnane, * Henry C. Kapteyn

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 102 to 103 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.

Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, MI 48109-2099, USA.
*   To whom correspondence should be addressed. E-mail: murnane{at}umich.edu

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Soft X-ray-Driven Femtosecond Molecular Dynamics.
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