   Simultaneous coherent imaging and strain measurement using coupled photorefractive holography and shearographyRosso, Vanessa  ; ; et alin Optics Letters (2008), 33 By coupling photorefractive holography with speckle shearography, it is possible to simultaneously perform both coherent imaging and strain measurement. Use of the photorefractive effect, which is ... [more ▼] By coupling photorefractive holography with speckle shearography, it is possible to simultaneously perform both coherent imaging and strain measurement. Use of the photorefractive effect, which is insensitive to incoherently scattered light, is a significant advantage in coherent imaging as described. Experimental results obtained from a centrally loaded steel plate are presented. [less ▲] Detailed reference viewed: 35 (14 ULg) Almost-common path interferometer using the separation of polarization states for digital phase-shifting shearographyRosso, Vanessa ; Michel, Fabrice ; Renotte, Yvon et alin Optical Engineering : The Journal of the Society of Photo-Optical Instrumentation Engineers (2007), 46(10), An original experimental setup for shearography with metrological applications is presented. The simplicity and the efficiency of the setup are provided by a shearing device, a prism that separates the TE ... [more ▼] An original experimental setup for shearography with metrological applications is presented. The simplicity and the efficiency of the setup are provided by a shearing device, a prism that separates the TE and TM polarization modes with a coating and a thin glass plate placed on its face. The use of this shearing device enables an in-line and almost-common path configuration for the shearing interferometer, a path that leads to high stability and a low sensitivity to external disturbances. Moreover, the sensitivity of the interferometer can be easily adjusted for different applications by varying the shearing amount with glass plates of different thicknesses or by moving the shearing device between two lenses along the optical axis. The temporal phase-shifting method is applied through the use of a liquid crystal variable retarder. (c) 2007 Society of Photo-Optical Instrumentation Engineers. [less ▲] Detailed reference viewed: 17 (2 ULg)Spectroscopie Mössbauer, propriétés magnétiques et optiques non-linéaires de xérogels dopés par des nanoparticules ferriques; Rosso, Vanessa ; Renotte, Yvon et alPoster (2006) Detailed reference viewed: 29 (2 ULg)The nonlinear optical, magnetic, and Mössbauer spectral properties of some iron(III) doped silica xerogels; Rosso, Vanessa ; Renotte, Yvon et alConference (2006) Detailed reference viewed: 18 (1 ULg)High transmission efficiency for surface plasmon resonance by use of a dielectric gratingLenaerts, Cedric ; Michel, Fabrice ; et alin Applied Optics (2005), 44(28), 6017-6022 The efficiency of the transmission of surface plasmon waves by use of a dielectric diffraction grating is discussed. The Kretschmann device allows us to obtain a surface plasmon resonance that consists of ... [more ▼] The efficiency of the transmission of surface plasmon waves by use of a dielectric diffraction grating is discussed. The Kretschmann device allows us to obtain a surface plasmon resonance that consists of an absorption peak in the reflection spectrum. When surface plasmon resonance occurs, the TM-polarization mode of the incident electromagnetic wave is neither transmitted nor reflected. The procedure to transform an absorption peak into a transmission peak is described. Transmittivity of 68% is obtained for a simple structure that consists of a thin-film layer of Ag coated on a volume diffraction grating and embedded between two dielectric media. The results presented herein were obtained by numerical simulations that were carried out by use of an algorithm based on the rigorous coupled-wave theory. [less ▲] Detailed reference viewed: 30 (8 ULg)Narrow band-width wavelength filter by guided mode resonanceLenaerts, Cedric ; ; Renotte, Yvon et alin Optical Engineering : The Journal of the Society of Photo-Optical Instrumentation Engineers (2004), 43(11), 2631-2639 Simple resonant structures that permit holographic reflection filtering are studied. The filters under study work under a 45-deg incidence for a wavelength of λ=632.8 nm, a condition useful for future ... [more ▼] Simple resonant structures that permit holographic reflection filtering are studied. The filters under study work under a 45-deg incidence for a wavelength of λ=632.8 nm, a condition useful for future inclusion in substrate mode systems. First, the influence of the structural parameters of the grating and the waveguide on the position and the shape of the resonance peaks are studied by numerical computation. The numerical results, obtained within the rigorous coupled wave theory, are compared with the measured response of some filters. These filters contain a grating recorded by holography deposited on the substrate. In the case of the bilayer filter, a waveguide is introduced between the grating and the substrate. Second, the numerical results are used for the conception of an active substrate mode spectral filter built from electro-optic zinc oxide. [less ▲] Detailed reference viewed: 40 (6 ULg)Magnetic, Mössbauer spectral and nonlinear optical properties of ferric nanoparticle-doped silica xerogels; Rosso, Vanessa ; Heinrichs, Benoît et alConference (2004) Detailed reference viewed: 10 (0 ULg)Magnetic, Mössbauer spectral and nonlinear optical properties of ferric nanoparticle-doped silica xerogels; Rosso, Vanessa ; Heinrichs, Benoît et alPoster (2004) Detailed reference viewed: 7 (0 ULg)Synthèse et étude des propriétés optiques de semiconducteurs nanométriquesLoicq, Jerôme ; ; Renotte, Yvon Conference (2002) Detailed reference viewed: 21 (3 ULg)Modal Analysis of Plate Structures Using Digital Speckle Pattern Interferometry; ; Golinval, Jean-Claude et alConference given outside the academic context (1995) Detailed reference viewed: 30 (1 ULg)Design for polarizing holographic optical elementsHabraken, Serge ; ; Roose, Stéphane et alin Applied Optics (1995), 34(19), 3595-3602 We present results of the application of a three-dimensional rigorous-vector coupled-wave theory to the design of polarizing holographic optical elements. Two different cases have been selected giving ... [more ▼] We present results of the application of a three-dimensional rigorous-vector coupled-wave theory to the design of polarizing holographic optical elements. Two different cases have been selected giving rise to two types of element, one of which is completely original. Experimental realizations were performed. The recording material was dichromated gelatin because of its outstanding performance related to diffraction efficiency. A fair agreement between the theoretical previsions and the experimental results was achieved. [less ▲] Detailed reference viewed: 19 (6 ULg)Trigonométrie et nombres complexes; ; Tossings, Patricia Learning material (1994) Detailed reference viewed: 2 (0 ULg) |
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