Diagnostics for the detection and evaluation of laser induced damage

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Description

The Laser Damage and Conditioning Group at LLNL is evaluating diagnostics which will help make damage testing more efficient and reduce the risk of damage during laser conditioning. The work to date has focused on photoacoustic and scattered light measurements on 1064-nm wavelength HfO{sub 2}/SiO{sub 2} multilayer mirror and polarizer coatings. Both the acoustic and scatter diagnostics have resolved 10 {mu}m diameter damage points in these coatings. Using a scanning stage, the scatter diagnostic can map both intrinsic and laser-induced scatter. Damage threshold measurements obtained using scatter diagnostics compare within experimental error with those measured using 100x Nomarski microscopy. Scatter ... continued below

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10 p.

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Sheehan, L.; Kozlowski, M. & Rainer, F. January 3, 1995.

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Description

The Laser Damage and Conditioning Group at LLNL is evaluating diagnostics which will help make damage testing more efficient and reduce the risk of damage during laser conditioning. The work to date has focused on photoacoustic and scattered light measurements on 1064-nm wavelength HfO{sub 2}/SiO{sub 2} multilayer mirror and polarizer coatings. Both the acoustic and scatter diagnostics have resolved 10 {mu}m diameter damage points in these coatings. Using a scanning stage, the scatter diagnostic can map both intrinsic and laser-induced scatter. Damage threshold measurements obtained using scatter diagnostics compare within experimental error with those measured using 100x Nomarski microscopy. Scatter signals measured during laser conditioning can be used to detect damage related to nodular defects.

Physical Description

10 p.

Notes

INIS; OSTI as DE95014517

Source

  • 26. annual Boulder damage symposium: laser-induced damage in optical materials, Boulder, CO (United States), 24-26 Oct 1994

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  • Other: DE95014517
  • Report No.: UCRL-JC--118837
  • Report No.: CONF-9410155--7
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 83795
  • Archival Resource Key: ark:/67531/metadc782491

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  • January 3, 1995

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • Feb. 16, 2016, 6:25 p.m.

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Sheehan, L.; Kozlowski, M. & Rainer, F. Diagnostics for the detection and evaluation of laser induced damage, article, January 3, 1995; California. (digital.library.unt.edu/ark:/67531/metadc782491/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.