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Article Dans Une Revue Optical Materials Année : 2023

Optimization of the Thickness Dependent Third Order Optical Nonlinearities of 2D Bi2Se3 layers

Résumé

The thickness-dependent saturable absorption behaviour of atomically thin bismuth selenide films has been optimized using 515 nm and 1030 nm laser excitation wavelengths. The studies have been performed by the Z-scan technique employing 400 fs laser pulses emitted by a fiber laser at a repetition rate of 100 Hz. The obtained results allowed the determination of the nonlinear optical parameters as a function of the film thickness. Additional studies have been carried out in order to determine the third order optical nonlinearities as a function of the annealing temperature. The samples have been also studied by spectrophotometry, electron microscopy and X-ray diffraction, which allowed a deeper knowledge of the optical properties, as well as the crystalline structure of the Bi2Se3 material.
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hal-04265680 , version 1 (31-10-2023)

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Arjun Karimbana-Kandy, Fabien Lemarchand, Andrea Campos, Martiane Cabié, Carine Perrin- Pellegrino, et al.. Optimization of the Thickness Dependent Third Order Optical Nonlinearities of 2D Bi2Se3 layers. Optical Materials, 2023, 143, pp.114211. ⟨10.1016/j.optmat.2023.114211⟩. ⟨hal-04265680⟩
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