Third-Order Nonlinear Optical Response and Optical Limiting of WS2 Quantum Dots

Riyanka Karmakar; Dipendranath Mandal; K.V. Adarsh

doi:10.1364/NP.2022.NpTh2F.2

Optica Advanced Photonics Congress 2022
Technical Digest Series (Optica Publishing Group, 2022),
paper NpTh2F.2
•https://doi.org/10.1364/NP.2022.NpTh2F.2

Third-Order Nonlinear Optical Response and Optical Limiting of WS₂ Quantum Dots

Riyanka Karmakar, Dipendranath Mandal, and K.V. Adarsh

Nonlinear Photonics 2022

Maastricht,Limburg Netherlands
24–28 July 2022
ISBN: 978-1-957171-16-6

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Nonlinear Optics in 0D, 1D and 2D Materials (NpTh2F)

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R. Karmakar, D. Mandal, and K. V. Adarsh, "Third-Order Nonlinear Optical Response and Optical Limiting of WS2 Quantum Dots," in Optica Advanced Photonics Congress 2022, Technical Digest Series (Optica Publishing Group, 2022), paper NpTh2F.2.

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Abstract

We demonstrate wavelength- and pulse-width-dependent third-order nonlinear optical response of WS₂ quantum dots. The cumulative contribution of free-carrier and surface defects results in the remarkable optical nonlinearity with an optical limiting threshold of 1.4 GW/cm².

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