Optimization of the thickness dependent third order optical nonlinearities of 2D Bi2Se3 layers

Karimbana-Kandy, Arjun; Lemarchand, Fabien; Campos, Andrea; Cabié, Martiane; Perrin-Pellegrino, Carine; Lumeau, Julien; Natoli, Jean-Yves; Iliopoulos, Konstantinos

doi:10.1016/j.optmat.2023.114211

Optical Materials

2023

DOI: 10.1016/j.optmat.2023.114211

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Optimization of the thickness dependent third order optical nonlinearities of 2D Bi2Se3 layers

Arjun Karimbana-Kandy,

Fabien Lemarchand,

Andrea Campos

et al.

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Cited by 2 publications

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Pulse duration dependent optical nonlinearities of Bi₂Se₃ thin films

Karimbana-Kandy,

Campos,

Cabié

et al. 2023

Opt. Express

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Topological insulators, such as the Bi2Se3 material, exhibit significant optical nonlinearities. This work investigates the impact of the pulse duration on the nonlinear optical responses of Bi2Se3 layers. Scanning electron microscopy studies have been performed to reveal the crystalline structure of the samples. The nonlinear optical performance has been investigated for a wide range of pulse durations, from 400 fs to 10 ps, using 1030 nm laser excitation. The nonlinear absorption coefficients recorded in this study range from -1.45 x10−7 m/W to -4.86 x10−7 m/W. The influence of two different mechanisms on optical nonlinearities was observed and discussed. Identical experimental conditions have been employed throughout the studies allowing a direct comparison of the results.

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Pulse duration dependent optical nonlinearities of Bi₂Se₃ thin films

Karimbana-Kandy,

Campos,

Cabié

et al. 2023

Opt. Express

View full text Add to dashboard Cite

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Controlling the Crystallinity and Morphology of Bismuth Selenide via Electrochemical Exfoliation for Tailored Reverse Saturable Absorption and Optical Limiting

Yan,

Li,

Pan

et al. 2024

Nanomaterials

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As an emerging two-dimensional (2D) Group-VA material, bismuth selenide (Bi2Se3) exhibits favorable electrical and optical properties. Here, three distinct morphologies of Bi2Se3 were obtained from bulk Bi2Se3 through electrochemical intercalation exfoliation. And the morphologies of these nanostructures can be tuned by adjusting solvent polarity during exfoliation. Then, the nonlinear optical and absorption characteristics of the Bi2Se3 samples with different morphologies were investigated using open-aperture Z-scan technology. The results reveal that the particle structure of Bi2Se3 exhibits stronger reverse saturable absorption (RSA) than the sheet-like structure. This is attributed to the higher degree of oxidation and greater number of localized defect states in the particle structure than in the sheet-like structure. Electrons in these defect states can be excited to higher energy levels, thereby triggering excited-state and two-photon absorption, which strengthen RSA. Finally, with increasing the RSA, the optical limiting threshold of 2D Bi2Se3 can also be increased. This work expands the potential applications of 2D Bi2Se3 materials in the field of broadband nonlinear photonics.

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Optimization of the thickness dependent third order optical nonlinearities of 2D Bi2Se3 layers

Cited by 2 publications

References 42 publications

Pulse duration dependent optical nonlinearities of Bi₂Se₃ thin films

Pulse duration dependent optical nonlinearities of Bi₂Se₃ thin films

Controlling the Crystallinity and Morphology of Bismuth Selenide via Electrochemical Exfoliation for Tailored Reverse Saturable Absorption and Optical Limiting

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Optimization of the thickness dependent third order optical nonlinearities of 2D Bi2Se3 layers

Cited by 2 publications

References 42 publications

Pulse duration dependent optical nonlinearities of Bi2Se3 thin films

Pulse duration dependent optical nonlinearities of Bi2Se3 thin films

Controlling the Crystallinity and Morphology of Bismuth Selenide via Electrochemical Exfoliation for Tailored Reverse Saturable Absorption and Optical Limiting

Contact Info

Product

Resources

About

Pulse duration dependent optical nonlinearities of Bi₂Se₃ thin films

Pulse duration dependent optical nonlinearities of Bi₂Se₃ thin films