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Interference among the neighboring sub-micron size harmonic particles

Samanta, R and Upadhyay, SK and Mujumdar, S (2024) Interference among the neighboring sub-micron size harmonic particles. In: Optics Communications, 563 .

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Official URL: https://doi.org/10.1016/j.optcom.2024.130549


In recent times, harmonic nanoparticles (HNPs) have gained considerable interest in many fields like nanophotonics, cell imaging, nanomedicine, etc. Unlike fluorescent particles and quantum dots, HNPs are photo-stable, non-bleaching, bio-compatible, and wavelength-flexible. Here, we explore second harmonic generation (SHG) from sub-micron size BaTiO3 (BTO) particles. BTO is a well-known perovskite material extensively used for its nonlinear optical properties. Our investigation of out-of-focus diffraction patterns of second harmonic light has helped us know about particle assembly's nature. We have observed interference fringes at the overlapped regions of the out-of-plane SHG patterns that emerged from two, three, and even multiple adjacent particles. Our study may help in the 3D tracking of nonlinear particles in a living cell and deep tissue imaging. © 2024

Item Type: Journal Article
Publication: Optics Communications
Publisher: Elsevier B.V.
Additional Information: The copyright for this article belongs to Elsevier B.V.
Keywords: Barium titanate; Diffraction patterns; Gold nanoparticles; Harmonic analysis; Interferometry; Nonlinear optics; Optical properties; Perovskite; Semiconductor quantum dots, BaTiO 3; Cell imaging; Fluorescent particle; Harmonic nanoparticle; Nonlinear optical properties; Out-of-focus; Out-of-plane; Out-of-plane imaging; Submicron size; Time-harmonic, Harmonic generation
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 20 May 2024 12:11
Last Modified: 20 May 2024 12:11
URI: https://eprints.iisc.ac.in/id/eprint/84739

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