Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Pulsed photothermal mirror technique: characterization of opaque materials

Not Accessible

Your library or personal account may give you access

Abstract

The time-resolved thermal mirror technique is developed under pulsed laser excitation for quantitative measurement of thermal and mechanical properties of opaque materials. Heat diffusion and thermoelastic equations are solved analytically for pulsed excitation assuming surface absorption and an instantaneous pulse. Analytical results for the temperature change and surface displacement in the sample are compared to all-numerical solutions using finite element method analysis accounting for the laser pulse width and sample geometry. Experiments are performed that validate the theoretical model and regression fitting is performed to obtain the thermal diffusivity and the linear thermal expansion coefficient of the samples. The values obtained for these properties are in agreement with literature data. The technique is shown to be useful for quantitative determinations of the physics properties of metals with high thermal diffusivity.

© 2014 Optical Society of America

Full Article  |  PDF Article
More Like This
Laser induced thermoelastic surface displacement in solids detected simultaneously by photothermal mirror and interferometry

G. A. S. Flizikowski, O. A. Capeloto, V. G. Camargo, B. Anghinoni, M. L. Baesso, L. C. Malacarne, M. P. Belançon, T. Požar, and N. G. C. Astrath
Opt. Express 28(5) 7116-7124 (2020)

Photothermal mirror Z-scan spectrometry of opaque samples

Aristides Marcano Olaizola
J. Opt. Soc. Am. B 36(10) 2907-2912 (2019)

Time-resolved thermal mirror technique with top-hat cw laser excitation

Francine B. G. Astrath, Nelson G. C. Astrath, Jun Shen, Jianqin Zhou, Luis C. Malacarne, P. R. B. Pedreira, and Mauro L. Baesso
Opt. Express 16(16) 12214-12219 (2008)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (9)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved