"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Experimental evidence of second harmonic photoacoustic signal generation in metals

A. KAPIDŽIĆ1, D. M. PETROVIĆ2, S. R. LUKIĆ2, M. D. DRAMIĆANIN2,*

Affiliation

  1. Institute of Nuclear Sciences "Vinča," PO Box 522, 11001 Belgrade, Serbia
  2. Department of Physics, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 4, 21000 Novi Sad, Serbia

Abstract

The capability of photoacoustic (PA) spectroscopy for the detection of the second harmonic thermal waves on metal surfaces is investigated. Expressions for the first and second harmonic amplitude and phase PA spectra are derived from the one-dimensional nonlinear heat conduction equation using stepwise successive approximation method. First and second harmonic amplitude and phase PA spectra of nickel sample are measured in a heat reflection PA configuration. PA amplitude intensity dependence on excitation intensity exhibit characteristic behavior, it has linear dependence in the case of first harmonic and square dependence in the case of second. Experimental data were in excellent agreement with theoretical calculations. Modulation frequency dependence of amplitude and phase provided sufficient data for the thermal properties evaluation from PA measurements..

Keywords

Photoacoustic spectroscopy, Thermal waves, Thermal conduction.

Submitted at: June 27, 2007
Accepted at: Sept. 18, 2007

Citation

A. KAPIDŽIĆ, D. M. PETROVIĆ, S. R. LUKIĆ, M. D. DRAMIĆANIN, Experimental evidence of second harmonic photoacoustic signal generation in metals, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 9, pp. 2691-2695 (2007)