Optical limiting and excited-state absorption in fullerene solutions and doped glasses

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We report the ground state and excited state optical absorption spectra in the visible and near infrared for several substituted fullerenes and higher fullerenes in toluene solutions. Based on these measurements, broadband predictions of the optical limiting performance of these molecules can be deduced. These predictions are then tested at 532 to 700 nm in intensity-dependent transmission measurements. We observe optical limiting in all fullerenes measured; higher fullerenes show the greatest potential for limiting in the near infrared (650-1000 nm), while substituted C{sub 60} shows optimal limiting in the visible (450-700 nm). We observe dramatically reduced limiting for solid forms ... continued below

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9 p.

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McBranch, D.; Smilowitz, L. & Klimov, V. September 1, 1995.

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We report the ground state and excited state optical absorption spectra in the visible and near infrared for several substituted fullerenes and higher fullerenes in toluene solutions. Based on these measurements, broadband predictions of the optical limiting performance of these molecules can be deduced. These predictions are then tested at 532 to 700 nm in intensity-dependent transmission measurements. We observe optical limiting in all fullerenes measured; higher fullerenes show the greatest potential for limiting in the near infrared (650-1000 nm), while substituted C{sub 60} shows optimal limiting in the visible (450-700 nm). We observe dramatically reduced limiting for solid forms of C{sub 60} (thin films and C{sub 60}-doped porous glasses), indicating that efficient optical limiting in fullerenes requires true molecular solutions.

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9 p.

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OSTI as DE95016963

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  • 40. annual meeting of the Society of Photo-Optical Instrumentation Engineers, San Diego, CA (United States), 9-14 Jul 1995

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  • Other: DE95016963
  • Report No.: LA-UR--95-2729
  • Report No.: CONF-950793--27
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 106742
  • Archival Resource Key: ark:/67531/metadc627677

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  • September 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 29, 2016, 6:44 p.m.

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McBranch, D.; Smilowitz, L. & Klimov, V. Optical limiting and excited-state absorption in fullerene solutions and doped glasses, article, September 1, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc627677/: accessed November 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.