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Quantification of nonlinear absorption in ternary As-Sb-Se chalcogenide glasses

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posted on 2023-11-30, 06:44 authored by P. Pradhan, Pritam Khan, J. R. Aswin, K. V. Adarsh, R. Naik, N. Das, A. K. Panda
In this article, we studied intensity dependent third order nonlinear optical response in ternary As40Sb7Se53 and As40Sb10Se50 chalcogenide glasses by employing nanosecond Z-scan technique. At low intensity, we observed saturable absorption in As40Sb7Se53 which makes a remarkable transition to reverse saturable absorption at higher intensities. On the other hand, when the Sb concentration increased in As40Sb10Se50, saturable absorption disappears and the sample exhibits only two-photon absorption. Experimental results further indicate that the strong two-photon absorption in our samples can be exploited to fabricate high performance solid state optical limiting devices for next generation all-optical network.

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