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Role of thermal and photoannealing on nonlinear optical response of Ge30Se55Bi15 thin films

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posted on 2020-03-27, 10:38 authored by Adyasha Aparimita, Pritam KhanPritam Khan, J.R. Aswin, K.V. Adarsh, R. Naik
In this article, we employed the nanosecond Z-scan technique to demonstrate the nonlinear optical response in Ge30Se55Bi15 thin films after thermal and photoannealing. The intensity dependent open aperture Z-scan traces reveal that all the samples, i.e., as-prepared, thermal, and photoannealed thin films, exhibit reverse saturable absorption. The experimental results indicate that both thermal and photoannealing can be efficiently used to enhance the nonlinear absorption coefficient (β) compared to the as-prepared sample. We further demonstrate that the β value of thermally annealed and as-prepared samples increases significantly at higher intensities. On the contrary, the β value of the photoannealed sample does not exhibit appreciable changes against the intensity variation.

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Publication

Journal of Applied Physics;127, 075102

Publisher

AIP Publishing

Note

peer-reviewed

Other Funding information

Research in Nuclear Science (BRNS), Department of Physics, Indian Institute of Science Education and Research, Bhopal (IISER)

Rights

Copyright 2020 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics The following article "Role of thermal and photoannealing on nonlinear optical response of Ge30Se55Bi15 thin films" appeared in Journal of Applied Physics, 2020, 127, 075102 published article and may be found at https://doi.org/10.1063/1.5132579

Language

English

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