The European Physical Journal Special Topics

, Volume 153, Issue 1, pp 395–400 | Cite as

Photothermal techniques with a top-hat beam excitation

Article

Abstract.

A flatly topped circular beam (“top-hat beam”) is employed as the excitation beam for photothermal deflection and surface thermal lens techniques. The Fresnel diffraction model is applied to describe the photothermal signals. The theoretical comparison between a Gaussian beam and a top-hat beam excited photothermal signal amplitudes shows that the use of the top-hat beam excitation improves the measurement sensitivity of the photothermal techniques. Experimental results for both photothermal deflection and surface thermal lens are presented. The potential applications of the top-hat beam excited photothermal techniques are highlighted.

Keywords

European Physical Journal Special Topic Gaussian Beam Probe Beam Sample Plane Thermal Lens 

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References

  1. S.E. Bialkowski, Photothermal Spectroscopy Methods for Chemical Analysis (Wiley, New York, 1996) Google Scholar
  2. B. Li, S. Martin, E. Welsch, Opt. Lett. 24, 1398 (1999) Google Scholar
  3. W. Zhao, P. Palffy-Muhoray, Appl. Phys. Lett. 63, 1613 (1993) Google Scholar
  4. B. Li, S. Martin, E. Welsch, Appl. Opt. 39, 4690 (2000) Google Scholar
  5. B. Li, H. Blaschke, D. Ristau, J. Appl. Phys. 100, 053509-1 (2006) Google Scholar
  6. B. Li, E. Welsch, Appl. Opt. 38, 5241 (1999) Google Scholar
  7. B. Li, S. Xiong, Y. Zhang, Appl. Phys. B 80, 527 (2005) Google Scholar
  8. J.F. Power, Appl. Opt. 29, 52 (1990) Google Scholar
  9. X. Chen, B. Li, Y. Yang, Acta Phys. Sinica 55, 4673 (2006) (Chinese) Google Scholar
  10. W.B. Jackson, N.M. Amer, A.C. Boccara, D. Fournier, Appl. Opt. 20, 1333 (1981) Google Scholar
  11. B. Li, X. Chen, Eur. Phys. J. Special Topics 153, 423 (2008) Google Scholar
  12. A. Chartier, S.E. Bialkowski, Opt. Eng. 36, 303 (1997) Google Scholar

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  • B. Li
    • 1
  1. 1.Institute of Optics and Electronics, Chinese Academy of SciencesSichuanP.R. China

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