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Updated: Jul 7, 2026
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Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography
Published on: May 15, 2017
Single-beam interface thermal lensing
M Gugliotti1, M S Baptista, L G Dias
1Departamento de Bioquímica, Instituto de Química, Universidade de Sāo Paulo, Av. Prof. Lineu Prestes 748, Sāo Paulo 05508-940, Brazil.
Applied Optics
|February 29, 2008
Summary
A novel single-beam photothermal-lensing technique effectively studies interfaces. This method detects signals at a quartz-solution interface, revealing an optical element similar to an inverted thermal lens.
Area of Science:
- Analytical Chemistry
- Physical Chemistry
- Optics
Background:
- Interface characterization is crucial in various scientific disciplines.
- Photothermal techniques offer sensitive methods for probing material properties.
Purpose of the Study:
- To present a simplified single-beam photothermal-lensing technique for interface analysis.
- To investigate the optical properties of a quartz-solution interface using this method.
Main Methods:
- Utilized a single-beam laser configuration for photothermal-lensing.
- Analyzed the reflection signal from a quartz-solution interface.
- Applied a conventional thermal lens model for data fitting.
Main Results:
- Successfully detected a photothermal signal from the quartz-solution interface.
- The optical element formed at the interface was characterized.
- The observed optical element was found to resemble an inverted thermal lens.
Conclusions:
- The single-beam photothermal-lensing technique is viable for interface studies.
- The quartz-solution interface exhibits unique optical characteristics under photothermal influence.
