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Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
Published on: January 3, 2016
Near-field probing of nanoscale nonlinear optical processes
Optics Letters
|December 13, 2007
Summary
Researchers studied nanoscale nonlinear optical processes, observing the smallest objects yet with near-field probes. This involved two-photon upconversion in nanoparticles and second-harmonic generation in crystallites.
Area of Science:
- Nanoscale nonlinear optics
- Materials science
- Optical spectroscopy
Background:
- Nonlinear optical (NLO) phenomena are crucial for advanced optical technologies.
- Investigating NLO processes at the nanoscale presents unique challenges and opportunities.
- Near-field optical microscopy offers high spatial resolution for nanoscale characterization.
Purpose of the Study:
- To investigate two-photon-pumped upconversion and second-harmonic generation (SHG) at the nanoscale.
- To characterize the smallest distinguishable objects using nonlinear optical techniques.
- To explore the application of near-field probes for nanoscale NLO studies.
Main Methods:
- Utilized a near-field probe for high-resolution optical measurements.
- Studied two-photon-pumped upconversion in functionalized ZnS:Mn nanoparticles.
- Investigated second-harmonic generation (SHG) in N-(4-nitrophenyl)-(L)-prolinol crystallites.
Main Results:
- Successfully observed and characterized nanoscale nonlinear optical processes.
- Reported the smallest topographically distinguishable objects using nonlinear optical techniques.
- Demonstrated the efficacy of near-field probing for nanoscale NLO studies.
Conclusions:
- Nanoscale processing and efficient nonlinear organic chromophores enable high-resolution NLO imaging.
- Near-field probes are effective tools for studying nanoscale optical phenomena like upconversion and SHG.
- The study pushes the boundaries of nanoscale object characterization using optical methods.
