1.06 μm 150 psec laser damage study of diamond turned, diamond turned/ polished and polished metal mirrors

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Using a well characterized 1.06 μm 150 ps glass laser pulse the damage characteristics for diamond turned, diamond turned/ polished, and polished copper and silver mirrors less than 5 cm diameter were studied. Although most samples were tested with a normal angle of incidence, some were tested at 45$sup 0$ with different linear polarization showing an increase in damage threshold for S polarization. Different damage mechanisms observed will be discussed. Laser damage is related to residual surface influences of the fabrication process. First attempts to polish diamond turned surfaces resulted in a significant decrease in laser damage threshold. The importance ... continued below

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Pages: 33

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Saito, T. T.; Milam, D.; Baker, P. & Murphy, G. July 24, 1975.

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Description

Using a well characterized 1.06 μm 150 ps glass laser pulse the damage characteristics for diamond turned, diamond turned/ polished, and polished copper and silver mirrors less than 5 cm diameter were studied. Although most samples were tested with a normal angle of incidence, some were tested at 45$sup 0$ with different linear polarization showing an increase in damage threshold for S polarization. Different damage mechanisms observed will be discussed. Laser damage is related to residual surface influences of the fabrication process. First attempts to polish diamond turned surfaces resulted in a significant decrease in laser damage threshold. The importance of including the heat of fusion in the one dimensional heat analysis of the theoretical damage threshold and how close the samples came to the theoretical damage threshold is discussed. (auth)

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Pages: 33

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Dep. NTIS

Source

  • Symposium on damage in laser materials, Boulder, Colorado, USA, 30 Jul 1975

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  • Report No.: UCRL--76822(Rev.1)
  • Report No.: CONF-750730--2
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 4142675
  • Archival Resource Key: ark:/67531/metadc872232

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  • July 24, 1975

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  • Sept. 16, 2016, 12:32 a.m.

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  • April 27, 2017, 9:14 a.m.

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Saito, T. T.; Milam, D.; Baker, P. & Murphy, G. 1.06 μm 150 psec laser damage study of diamond turned, diamond turned/ polished and polished metal mirrors, article, July 24, 1975; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc872232/: accessed August 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.