Abstract
The ejection of ultradispersed diamond from a metallised target surface irradiated by nano- and subnanosecond laser pulses is experimentally investigated. Several targets with different transparent bases (quartz, polymethylmethacrylate) and absorbing metal coatings (titanium, aluminium) are investigated. The effect of the metal layer thickness and pulse width on the range of energy densities in which the ejection of diamond nanopowder is due to the transverse strain of metal layer is analysed. The heating of the target rear surface from which transfer occurs, in dependence of the target and laser pulse parameters, is estimated.
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