Far-field super-resolution imaging using scanning photonic nanojets

Mirza Karamehmedovic; Kristoffer Linder-Steinlein; Poul-Erik Hansen; Peng Chen; Amal M. A. Alghamdi; Jesper Glückstad

doi:10.1117/12.3017486

18 June 2024 Far-field super-resolution imaging using scanning photonic nanojets

Mirza Karamehmedovic, Kristoffer Linder-Steinlein, Poul-Erik Hansen, Peng Chen, Amal M. A. Alghamdi, Jesper Glückstad

Proceedings Volume PC12996, Unconventional Optical Imaging IV; PC1299613 (2024) https://doi.org/10.1117/12.3017486
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Photonic nanojets (PNJs) are highly localized optical probes that promise label-free measurements beyond the classical diffraction limit. We here demonstrate numerically the feasibility of label-free, self-calibrating, super-resolution optical detection and imaging using far-field scatterometry in conjunction with rapid scanning photonic nanojet excitation achieved with no opto-mechanical intervention. We realize PNJ scanning by computed structured illumination of refractive dielectric micro-elements such as micro-spheres and micro-cubes. Our far-field measurement data are phaseless. In proof-of-concept computations, we use our steerable optical probe to extract information on nanoparticles, aggregates of nanoparticles, and thin-film structures beyond the classical lateral and vertical resolution limits, in the presence of supporting structures such as substrates.

Conference Presentation

Citation Download Citation

Mirza Karamehmedovic, Kristoffer Linder-Steinlein, Poul-Erik Hansen, Peng Chen, Amal M. A. Alghamdi, and Jesper Glückstad "Far-field super-resolution imaging using scanning photonic nanojets", Proc. SPIE PC12996, Unconventional Optical Imaging IV, PC1299613 (18 June 2024); https://doi.org/10.1117/12.3017486

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