Near- and off-resonant optical limiting properties of gold-silver alloy nanoparticles for intense nanosecond laser pulses
作者： Stefanie Dengler , Christian Kübel , Andreas Schwenke , Gunnar Ritt , Bernd Eberle
DOI: 10.1088/2040-8978/14/7/075203
关键词:
摘要: The near- and off-resonant optical limiting properties of gold, silver gold?silver alloy nanoparticles in methyl 2-methylprop-2-enoate for nanosecond laser pulses are presented. generated by picosecond pulsed ablation liquid having hydrodynamic diameters from 26 to 30?nm. We use a Q-switched Nd:YAG working at wavelength 1064 or 532?nm, with pulse width 3?ns characterize their behaviour energy fluence dependent transmittance measurements. To elucidate the contribution nonlinear scattering scattered light an angle 90??is measured. experimental results show that these have strong attenuation which can be attributed intraband, interband free carrier absorption thermal-induced only high input energies. Our indicate addition surface plasmon resonance does not contribute processes
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