Unravelling Excited-State Absorption in NiFe2O4 Nanoparticles

Naresh Aggarwal; Pratik V. Shinde; Chandra S. Rout; K. V. Adarsh

doi:10.1364/BGPPM.2022.JW3A.43

Optica Advanced Photonics Congress 2022
Technical Digest Series (Optica Publishing Group, 2022),
paper JW3A.43
•https://doi.org/10.1364/BGPPM.2022.JW3A.43

Unravelling Excited-State Absorption in NiFe₂O₄ Nanoparticles

Naresh Aggarwal, Pratik V. Shinde, Chandra S. Rout, and K. V. Adarsh

Bragg Gratings, Photosensitivity and Poling in Glass Waveguides and Materials 2022

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

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Poster Session II- Virtual (JW3A)

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N. Aggarwal, P. V. Shinde, C. S. Rout, and K. V. Adarsh, "Unravelling Excited-State Absorption in NiFe2O4 Nanoparticles," in Optica Advanced Photonics Congress 2022, Technical Digest Series (Optica Publishing Group, 2022), paper JW3A.43.

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Abstract

We demonstrate strong nonlinear optical response of excited state absorption (91 ± 8 cm/GW) and negative nonlinearity ((-8.0 ± 0.5) × 10⁻⁴ cm²/GW) in NiFe₂O₄ nanoparticles. The observed nonlinearity is associated with free carrier absorption.

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