Wavefront and divergence of the beamlet prototype laser

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We have measured the wavefront and the divergence of the Beamlet prototype laser under a variety of conditions. Emphasis of the tests was on quantifying best attainable divergence in the angular regime below 30 {micro}rad to benchmark propagation models that are used to set wavefront gradient specifications for NIF optical components. Performance with and without active wavefront correction was monitored with radial shearing interferometers that measured near-field wavefront at the input and output of the main amplifier with a spatial resolution of 1 cm, and cameras which measured the corresponding intensity distributions in the far field with an angular resolution ... continued below

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Henesian, M A; Salmon, J T; Seppala, L G; Van Wonterghem, B M; Wegner, P J; Weiland, T L et al. October 30, 1998.

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Description

We have measured the wavefront and the divergence of the Beamlet prototype laser under a variety of conditions. Emphasis of the tests was on quantifying best attainable divergence in the angular regime below 30 {micro}rad to benchmark propagation models that are used to set wavefront gradient specifications for NIF optical components. Performance with and without active wavefront correction was monitored with radial shearing interferometers that measured near-field wavefront at the input and output of the main amplifier with a spatial resolution of 1 cm, and cameras which measured the corresponding intensity distributions in the far field with an angular resolution of 0.3 {micro}rad. Details of the measurements are discussed and related to NIF focal spot requirements and optics specifications.

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2.1 Mbytes

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  • 3rd International Conference on Solid State Lasers for Application to Inertial Confinement Fusion, Monterey, CA, June 7-12, 1998

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  • Other: DE00005793
  • Report No.: UCRL-JC-129724
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 5793
  • Archival Resource Key: ark:/67531/metadc695474

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • October 30, 1998

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  • Aug. 14, 2015, 8:43 a.m.

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  • May 6, 2016, 11:09 p.m.

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Henesian, M A; Salmon, J T; Seppala, L G; Van Wonterghem, B M; Wegner, P J; Weiland, T L et al. Wavefront and divergence of the beamlet prototype laser, article, October 30, 1998; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc695474/: accessed November 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.