Simulations of a phase corrector plate for the National Ignition Facility

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Simulations are presented on the effect of placing a static phase corrector plate in each beamline of the National Ignition Facility (NIF) to assist the adaptive optic in correcting beam phase aberrations. Results indicate such a plate could significantly improve the focal spot, reducing a 3{omega}, 80% spot half-angle from 21 to 8 {micro}rad for poorer-qualtiy optics, and 17 to 7 for better optics. Such a plate appears to be within the range of current fabrication technologies. It would have an alignment requiremnt of {+-}0.5 mm, if placed in the front end. In NIF operation, the occasional replacement of laser ... continued below

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10 p.

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Williams, W. H., LLNL July 1, 1998.

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Simulations are presented on the effect of placing a static phase corrector plate in each beamline of the National Ignition Facility (NIF) to assist the adaptive optic in correcting beam phase aberrations. Results indicate such a plate could significantly improve the focal spot, reducing a 3{omega}, 80% spot half-angle from 21 to 8 {micro}rad for poorer-qualtiy optics, and 17 to 7 for better optics. Such a plate appears to be within the range of current fabrication technologies. It would have an alignment requiremnt of {+-}0.5 mm, if placed in the front end. In NIF operation, the occasional replacement of laser slabs would slowly degrade the beam quality for a fixed corrector plate, with the spot size increasing from 8 to 15 {micro}rad after four new slabs for poorer optics, and 7 to 12 {micro}rad for better optics. The energy fraciton clipped on the injection pinhole ({+-}100 {micro}rad) would be <0.5% due to this pre-correction.

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10 p.

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INIS; OSTI as DE98058636

Other: FDE: PDF; PL:

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  • 3. international conference on the solid state lasers for application to inertial confinement fusion, Monterey, CA (United States), 7-12 Jun 1998

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  • Other: DE98058636
  • Report No.: UCRL-JC--130033
  • Report No.: CONF-980653--
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 658922
  • Archival Resource Key: ark:/67531/metadc707578

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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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  • July 1, 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 6, 2017, 6:28 p.m.

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Williams, W. H., LLNL. Simulations of a phase corrector plate for the National Ignition Facility, article, July 1, 1998; California. (digital.library.unt.edu/ark:/67531/metadc707578/: accessed November 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.