Location

La Jolla ,CA

Start Date

1-1-1989 12:00 AM

Description

Recently, laser induced thermal wave based technologies have provided a powerful class of techniques for the evaluation of solid state materials [1,2]. Through the use of tightly focussed optical beams modulated at high frequencies, it has been possible to both generate and interrogate highly localized thermal wave phenomena in materials with spatial resolutions approaching 1 µm [2]. The unique capability for thermal depth profiling of optically opaque materials is possible with surface thermal wave measurements because of the rather obvious relationship between the vertical depth of a buried feature and the transit time of thermal energy to the sample surface.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

8A

Chapter

Chapter 2: Advanced Techniques

Section

Other New Techniques

Pages

613-618

DOI

10.1007/978-1-4613-0817-1_77

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

Impulse Photothermal Evaluation of Materials Via Frequency Modulated Optical Reflectance I: Theory

La Jolla ,CA

Recently, laser induced thermal wave based technologies have provided a powerful class of techniques for the evaluation of solid state materials [1,2]. Through the use of tightly focussed optical beams modulated at high frequencies, it has been possible to both generate and interrogate highly localized thermal wave phenomena in materials with spatial resolutions approaching 1 µm [2]. The unique capability for thermal depth profiling of optically opaque materials is possible with surface thermal wave measurements because of the rather obvious relationship between the vertical depth of a buried feature and the transit time of thermal energy to the sample surface.