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Fs MR exposure has been used to induce refractive index change in bulks in the As0.42-x-yGexSbyS0.58 system. Photo- induced Deltan has been investigated as a function of laser dose by measuring diffraction efficiency of buried gratings.
Refractive index modifications of film Ge0.23Sb0.07S0.7 induced by 800 nm femtosecond laser irradiation are studied for laser repetition rates of 1 kHz and 80 MHz. Measurements are taken using an interferometric method and analysis of the transmission spectra.
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