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Diagnostic of laser contrast using target reflectivity

Pirozhkov, A. S.; Choi, I. W.; Sung, J. H.; Lee, S. K.; Yu, T. J.; Jeong, T. M.; Kim, I. J.; Hafz, N.; Kim, C. M. and Pae, K. H., et al. (2009) In Applied Physics Letters 94(24).
Abstract
Using three different laser systems, we demonstrate a convenient and simple plasma based diagnostic of the contrast of high-power short-pulse lasers. The technique is based on measuring the specular reflectivity from a solid target. The reflectivity remains high even at relativistic intensities above 10(19) W/cm(2) in the case of a high-contrast prepulse-free laser. On the contrary, the specular reflectivity drops with increasing intensities in the case of systems with insufficient contrast due to beam breakup and increased absorption caused by preplasma.
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@article{a769332a-8185-41ed-a5f9-6b7f9fc453e7,
  abstract     = {Using three different laser systems, we demonstrate a convenient and simple plasma based diagnostic of the contrast of high-power short-pulse lasers. The technique is based on measuring the specular reflectivity from a solid target. The reflectivity remains high even at relativistic intensities above 10(19) W/cm(2) in the case of a high-contrast prepulse-free laser. On the contrary, the specular reflectivity drops with increasing intensities in the case of systems with insufficient contrast due to beam breakup and increased absorption caused by preplasma.},
  articleno    = {241102},
  author       = {Pirozhkov, A. S. and Choi, I. W. and Sung, J. H. and Lee, S. K. and Yu, T. J. and Jeong, T. M. and Kim, I. J. and Hafz, N. and Kim, C. M. and Pae, K. H. and Noh, Y. -C. and Ko, D. -K. and Lee, J. and Robinson, A. P. L. and Foster, P. and Hawkes, S. and Streeter, M. and Spindloe, C. and McKenna, P. and Carroll, D. C. and Wahlström, Claes-Göran and Zepf, M. and Adams, D. and Dromey, B. and Markey, K. and Kar, S. and Li, Y. T. and Xu, M. H. and Nagatomo, H. and Mori, M. and Yogo, A. and Kiriyama, H. and Ogura, K. and Sagisaka, A. and Orimo, S. and Nishiuchi, M. and Sugiyama, H. and Esirkepov, T. Zh. and Okada, H. and Kondo, S. and Kanazawa, S. and Nakai, Y. and Akutsu, A. and Motomura, T. and Tanoue, M. and Shimomura, T. and Ikegami, M. and Daito, I. and Kando, M. and Kameshima, T. and Bolton, P. and Bulanov, S. V. and Daido, H. and Neely, D.},
  issn         = {0003-6951},
  keyword      = {high-speed optical techniques,laser beams,reflectivity,optical pulse generation},
  language     = {eng},
  number       = {24},
  publisher    = {AIP Publishing LLC},
  series       = {Applied Physics Letters},
  title        = {Diagnostic of laser contrast using target reflectivity},
  url          = {http://dx.doi.org/10.1063/1.3148330},
  volume       = {94},
  year         = {2009},
}