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Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle

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Differential light scattering: probing the sonoluminescence collapse.

G Vacca¹, R D Morgan, R B Laughlin

¹Physics Department, Stanford University, Stanford, California 94305, USA. gvacca@stanford.edu

Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics

|April 24, 2002

Summary

Differential light scattering (DLS) offers picosecond timing resolution without fast electronics. Applied to sonoluminescence, DLS revealed sub-nanosecond features near the turnaround, limited by noise to 0.5 ns resolution.

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Area of Science:

Physics
Optics
Acoustics

Background:

Sonoluminescence involves bubble collapse emitting light.
Precise timing of sonoluminescence events is crucial for understanding the physics.
Existing techniques may require complex or fast electronics.

Purpose of the Study:

To develop a novel light scattering technique for high-resolution timing.
To apply this technique to study the dynamics of sonoluminescence.
To investigate potential sub-nanosecond features during bubble collapse.

Main Methods:

Utilizing differential light scattering (DLS) based on polarization.
Implementing DLS for measurements without requiring fast electronic components.
Applying DLS to analyze sonoluminescence phenomena.

Main Results:

Differential light scattering (DLS) demonstrated capability for picosecond timing resolution.
Known sonoluminescence results, including self-similar collapse, were reproduced.
Resolution was limited to approximately 0.5 ns due to intensity noise.
Preliminary data suggests a smooth turnaround on a sub-0.5-ns timescale.
Evidence points to sub-nanosecond features occurring within nanoseconds of turnaround.

Conclusions:

Differential light scattering (DLS) is a promising technique for high-resolution timing in sonoluminescence.
The method potentially bypasses the need for specialized fast electronics.
Further investigation is warranted to fully resolve sub-nanosecond dynamics in sonoluminescence.