Performance of smoothing by spectral dispersion (SSD) on Beamlet

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The performance of the Beamlet laser with 1D SSD implemented is investigated. Simulations indicate that the critical issue for laser performance is the amount of additional divergence owing to SSD in comparison to the size of the spatial filter pinholes. At the current {plus_minus}200 {mu}rad pinholes used on Beamlet, simulations indicate that the levels of SSD divergence anticipated for the National Ignition Facility (NIF) results in a very slight degradation to the near field beam quality. Experiments performed with the Beamlet front end show no degradation to the near field beam with up to 100 {mu}rad of SSD divergence. Measurements ... continued below

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13 p.

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Rothenberg, J.E.; Moran, B.; Henesian, M. & Van Wonterghem, B. January 1, 1997.

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The performance of the Beamlet laser with 1D SSD implemented is investigated. Simulations indicate that the critical issue for laser performance is the amount of additional divergence owing to SSD in comparison to the size of the spatial filter pinholes. At the current {plus_minus}200 {mu}rad pinholes used on Beamlet, simulations indicate that the levels of SSD divergence anticipated for the National Ignition Facility (NIF) results in a very slight degradation to the near field beam quality. Experiments performed with the Beamlet front end show no degradation to the near field beam with up to 100 {mu}rad of SSD divergence. Measurements of the smoothing of a far field speckle pattern generated by a phase plate show the expected improvement in contrast with increasing amounts of SSD divergence.

Physical Description

13 p.

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INIS; OSTI as DE97051672

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  • 2. annual solid state lasers for applications to inertial confinement fusion (ICF), Paris (France), 22-25 Oct 1996

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  • Other: DE97051672
  • Report No.: UCRL-JC--124506
  • Report No.: CONF-9610225--11
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 462871
  • Archival Resource Key: ark:/67531/metadc674626

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1997

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  • July 25, 2015, 2:21 a.m.

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  • Feb. 17, 2016, 3:19 p.m.

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Rothenberg, J.E.; Moran, B.; Henesian, M. & Van Wonterghem, B. Performance of smoothing by spectral dispersion (SSD) on Beamlet, article, January 1, 1997; California. (digital.library.unt.edu/ark:/67531/metadc674626/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.