TITLE

Diagnostic of laser contrast using target reflectivity

AUTHOR(S)
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.; Pae, K. H.; Noh, Y.-C.; Ko, D.-K.; Lee, J.; Robinson, A. P. L.; Foster, P.; Hawkes, S.; Streeter, M.; Spindloe, C.; McKenna, P.; Carroll, D. C.
PUB. DATE
June 2009
SOURCE
Applied Physics Letters;6/15/2009, Vol. 94 Issue 24, p241102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
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 1019 W/cm2 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.
ACCESSION #
42223799

 

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