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Title: Raman beam combining for laser brightness enhancement

Abstract

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.

Inventors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1224423
Patent Number(s):
9,172,208
Application Number:
13/771,770
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Feb 20
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Dawson, Jay W., Allen, Graham S., Pax, Paul H., Heebner, John E., Sridharan, Arun K., Rubenchik, Alexander M., and Barty, Chrisopher B. J. Raman beam combining for laser brightness enhancement. United States: N. p., 2015. Web.
Dawson, Jay W., Allen, Graham S., Pax, Paul H., Heebner, John E., Sridharan, Arun K., Rubenchik, Alexander M., & Barty, Chrisopher B. J. Raman beam combining for laser brightness enhancement. United States.
Dawson, Jay W., Allen, Graham S., Pax, Paul H., Heebner, John E., Sridharan, Arun K., Rubenchik, Alexander M., and Barty, Chrisopher B. J. Tue . "Raman beam combining for laser brightness enhancement". United States. https://www.osti.gov/servlets/purl/1224423.
@article{osti_1224423,
title = {Raman beam combining for laser brightness enhancement},
author = {Dawson, Jay W. and Allen, Graham S. and Pax, Paul H. and Heebner, John E. and Sridharan, Arun K. and Rubenchik, Alexander M. and Barty, Chrisopher B. J.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {10}
}

Patent:

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