Considerations about Z-scan sensitivity improvement: theory versus experiments |
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| Authors: | T. Godin M. Fromager B. P?iv?nranta N. Passilly G. Boudebs E. Cagniot K. Ait-Ameur |
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| Affiliation: | (1) Centre de Recherche sur les Ions, les Matériaux et la Photonique, UMR 6252, CEA-CNRS-ENSICAEN et Université de Caen, CIMAP-ENSICAEN, 6 Bd Maréchal Juin, 14050 Caen, France;(2) Department of Physics and Mathematics, University of Joensuu, P.O. Box 111, 80101 Joensuu, Finland;(3) Laboratoire des Propriétés Optiques des Matériaux et Applications, FRE CNRS 2988, Université d’Angers, 2 Bd Lavoisier, 49005 Angers, France |
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| Abstract: | This paper reports an experimental demonstration of the improvement of the Z-scan technique’s sensitivity. It is shown that this sensitivity can be multiplied by a factor equal to almost 400 with the help of simple binary diffractive elements. Such a possibility was actually predicted theoretically in one of our previous papers. In this study, the interpretation is investigated in a wider context taking into account the definition of the signal normalisation as introduced by Z-scan and the well-known eclipsing Z-scan (EZ-scan) experiments. In particular, advantages and drawbacks are compared, by looking at the normalised or the unnormalised aperture transmission. |
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| Keywords: | KeywordHeading" >PACS 42.25.Fx |
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