Results of energy deposition measurement in interaction between an ultra-short laser pulse and nanostructured
target are described. As a target we used carbon nanotubes and multilayer graphene deposited on a sapphire
wafer surface and embedded in a layer of protein. A 25 fs, p-polarised pulses from a 1 kHz-Ti;sapphire laser
of energy up to 3 mJ were focused to give intensity up to 2×1016 W/cm2 on a target positioned within an
integrating sphere. The absorption measured showed a level in excess of 80 %, increasing with the intensity. The
results suggest that the host material (lysozyme) is responsible for the breakdown while the embedded material
contributes dominantly to the absorption.
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Karol A. Janulewicz ; Hak Jae Lee ; Asep Hapiddin ; Bohuslav Matouš ; Chul Min Kim, et al.
Optical damage threshold and energy deposition in the embedded nanostructures
", Proc. SPIE 8530, Laser-Induced Damage in Optical Materials: 2012, 853006 (December 6, 2012); doi:10.1117/12.977307; http://dx.doi.org/10.1117/12.977307