Spatial and temporal coherence measurements of harmonics of a 1053 nm, 2.5 ps laser interacting with solid surfaces

We present measurements of the spatial and temporal coherence lengths of the 4th harmonic of a 1053 nm, 2.5 ps laser generated during high intensity (up to 10(19) wcm(-2)) interactions with a solid target. Coherence lengths were measured by use of a Young's double slit interferometer. The effec...

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Bibliographic Details
Main Authors: Zhang, J, Zepf, M, Norreys, P, Dangor, A, Bakarezos, M, Danson, C, Dyson, A, Fews, A, Gibbon, P, Lee, P, Loukakos, P, Key, M, Moustaizis, S, Neely, D, Walsh, F, Wark, J
Format: Conference item
Published: 1996
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Summary:We present measurements of the spatial and temporal coherence lengths of the 4th harmonic of a 1053 nm, 2.5 ps laser generated during high intensity (up to 10(19) wcm(-2)) interactions with a solid target. Coherence lengths were measured by use of a Young's double slit interferometer. The effective source size, as defined by the Van Cittert-Zernicke theorem, was found to be 10 similar to 12 mu m, and the coherence time was observed to be in the range 0.02 similar to 0.4 ps.