Spectrum and Polarization-Resolved Nonlinear Optical Near-Field Imaging of Plasmonic Nanoantennas DOI
Y. Liu, Jiajun Wang, Bingbing Zhu

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

Plasmonic nanoantennas, which support surface plasmon resonances enabling the concentration of electromagnetic energy into subwavelength volumes, have emerged as versatile tools for a wide range applications. However, achieving high-resolution near-field imaging with polarization and temporal sensitivity remains significant challenge. In this work, we present novel nonlinear optical microscopy technique based on degenerate four-wave mixing to enable spectrum- polarization-resolved plasmonic nanoantennas. By using mid-infrared pump near-infrared probe, capture detailed spatial distributions plasmon-enhanced intensity characteristics, revealing distinct patterns frequency-dependent enhancements. Our method enables observation resonance-induced spectral shifts resolution, offering valuable insights field behaviors, particularly in range. This approach provides powerful tool exploring understanding complexities nanostructures, potential advancing nano-optics

Language: Английский

Spectrum and Polarization-Resolved Nonlinear Optical Near-Field Imaging of Plasmonic Nanoantennas DOI
Y. Liu, Jiajun Wang, Bingbing Zhu

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

Plasmonic nanoantennas, which support surface plasmon resonances enabling the concentration of electromagnetic energy into subwavelength volumes, have emerged as versatile tools for a wide range applications. However, achieving high-resolution near-field imaging with polarization and temporal sensitivity remains significant challenge. In this work, we present novel nonlinear optical microscopy technique based on degenerate four-wave mixing to enable spectrum- polarization-resolved plasmonic nanoantennas. By using mid-infrared pump near-infrared probe, capture detailed spatial distributions plasmon-enhanced intensity characteristics, revealing distinct patterns frequency-dependent enhancements. Our method enables observation resonance-induced spectral shifts resolution, offering valuable insights field behaviors, particularly in range. This approach provides powerful tool exploring understanding complexities nanostructures, potential advancing nano-optics

Language: Английский

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