Lawrence Livermore National Security, LLC

Chrisopher B J Barty

Jay Walter Dawson

Alexander M Rubenchik

Paul H Pax

John Edward Heebner

Graham S Allen

Arun K Sridharan

An optical source capable of enhanced scaling of pulse energy and brightness utilizes an ensemble of single-aperture fiber lasers as pump sources, with each such fiber laser operating at acceptable pulse energy levels. Beam combining involves stimulated Raman scattering using a Stokes' shifted seed beam, the latter of which is optimized in terms of its temporal and spectral properties. Beams from fiber lasers can thus be combined to attain pulses with peak energies in excess of the fiber laser self-focusing limit of 4 MW while retaining the advantages of a fiber laser system of high average power with good beam quality.

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Hayward, CA, United States of America

Chrisopher B J Barty