Effects of defocusing on near-field intensity enhancement

dc.contributor.author	Sarita; Jha R.; Singh R.K.
dc.date.accessioned	2025-05-23T11:13:49Z
dc.description.abstract	Defocusing in an optical system is a common practical issue that affects the quality and shape of the beam and is hence important in the light-matter interaction. A detailed investigation is carried out on the interaction of the tightly focused beam with a spherical nanoparticle under defocusing. Tightly focused beams with linear and radial polarization are considered for the investigation and the influence of such beams on plasmonic characteristics of a nanoparticle is analyzed. The effect of defocusing is observed on intensity enhancement in near-field in different surrounding media. © 2024 SPIE.
dc.identifier.doi	https://doi.org/10.1117/12.3028133
dc.identifier.uri	http://172.23.0.11:4000/handle/123456789/6242
dc.relation.ispartofseries	Proceedings of SPIE - The International Society for Optical Engineering
dc.title	Effects of defocusing on near-field intensity enhancement

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