Single nanoparticle real and k-space spectroscopy with structured light. (15th October 2021)

• Record Type: Journal Article
• Authors: Woźniak, Paweł; Banzer, Peter
• Is Part Of: New journal of physics. Volume 23:Number 10(2021)
• Publication Date: 2021-10-15
• Subjects: nanospectroscopy -- nano-optics -- structured light -- nanoparticle; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/ac2920
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: With the ever-increasing application range of nanoscale light–matter interactions, the study of individual nanostructures or particles becomes a crucial task. Over the last decade, it was proven that bespoke light fields tailored at the nanoscale can act as multi-purpose tools for the in-depth optical investigation at the single-particle level. Here we show that by tightly focusing cylindrical vector beams, a focal electromagnetic field landscape can be engineered, enabling the measurement of position-dependent resonance spectra. This method extends the existing nano-optics toolbox and can find a wide range of applications in spectroscopy.