Interaction of high-power laser light with silver nanocluster composite glasses

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Abstract
The size and size distribution of silver nanoclusters embedded in soda-lime glasses (formed by ion irradiation of Ag+–Na+ ion-exchanged waveguides) has been modified by high-power laser irradiation. Optical transmittance in the visible range is found to increase above the energy threshold E*=0.3±0.1 J/cm2 for λ=532 nm and E*=5±1 J/cm2 for λ=1064 nm for pulse lengths of about 10 ns. Cluster size reduction has been observed. Small radii silver nanoclusters are also formed after laser irradiation of ion-exchanged waveguides. The optical response of the composites has been determined by optical absorption spectroscopy. Transmission electron microscopy, x-ray photoelectron and Auger electron spectroscopies, and Rutherford backscattering spectrometry have been used to characterize the composites.

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