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Updated: Jul 15, 2026
15:06
Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
Published on: January 3, 2016
Coherence loss in light backscattering by random media with nanoscale nonuniformities.
Anatol M Brodsky1, Gordon T Mitchell, Summer L Ziegler
1Center for Process Analytical Chemistry, Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, USA.
Summary
This study introduces a new method to measure wave packet coherence loss in random media using a modified Michelson interferometer. The technique reveals details about media nonuniformities and nanoparticle scattering effects.
Area of Science:
- Physics
- Optics
- Materials Science
Background:
- Understanding wave packet dynamics in random media is crucial for applications in optics and materials science.
- Characterizing media nonuniformities and scattering phenomena requires advanced measurement techniques.
Purpose of the Study:
- To develop and demonstrate an experimental technique for measuring time-resolved coherence loss and destruction of backscattered wave packets.
- To analyze the information contained in these measurements regarding media nonuniformities.
- To compare experimental data with theoretical models including Mie scattering and inelastic optical transitions.
Main Methods:
- Utilizing a modified Michelson interferometer for time-resolved measurements.
- Employing model nanosuspensions for experimental validation.
- Developing theoretical expressions incorporating Mie-type resonant scattering and surface effects.
Main Results:
- Successfully measured time-resolved coherence loss and destruction of backscattered wave packets.
- Obtained rich information about the characteristics of media nonuniformities from the measurements.
- Observed an effect attributed to enhanced inelastic optical transitions near nanoparticle surfaces.
- Validated experimental data against theoretical predictions.
Conclusions:
- The developed experimental technique provides valuable insights into random media characteristics.
- Mie-type resonant scattering and surface effects play significant roles in backscattering phenomena.
- The study opens possibilities for characterizing multiscattering random media using backscattering analysis.
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