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Updated: May 30, 2026
15:06
Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
Published on: January 3, 2016
Effects of experimental variables on the nonlinear harmonic generation technique
Siming Liu1, Anthony J Croxford, Simon A Neild
1School of Mechanical Engineering and Automation, Beihang University, Beijing, China.
Summary
Harmonic generation
Area of Science:
- Materials Science
- Non-Destructive Testing
Background:
- Harmonic generation is sensitive to microstructural changes.
- Measurement variability is a challenge in harmonic generation techniques.
Purpose of the Study:
- Characterize experimental variables in harmonic generation measurements.
- Establish the relative importance of these variables.
- Provide guidance for optimal measurement procedures.
Main Methods:
- Analysis of the complete measurement signal path.
- Modeling harmonic amplitude as a function of position.
- Accounting for alignment inaccuracy.
Main Results:
- Identified key experimental variables affecting harmonic generation measurements.
- Quantified the impact of alignment inaccuracy on harmonic amplitude.
- Established the relative importance of various experimental factors.
Conclusions:
- Understanding and controlling experimental variables is crucial for reliable harmonic generation measurements.
- The developed model aids in accounting for alignment errors.
- Optimized procedures can enhance damage detection capabilities using harmonic generation.
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