Showing results 21 to 38 of 38
 Diffraction with Gauss-Hermite beams; Roose, Stéphane  Conference (1994, April 04) Detailed reference viewed: 3 (0 ULg)Gaussian beams and Fourier Optics; Roose, Stéphane in Akos, G.; Lippényi, T.; Lupkovics, G. (Eds.) et al Proceedings of the 16th Congress of the international commission for Optics: Optics as a Key to High Technology ICO-16 (1993, July 26) Detailed reference viewed: 2 (0 ULg)Quelques applications originales en holographie mettant en jeu un système photopolymérisable auto-développant; ; Habraken, Serge et alin Proceedings of OPTO 93 (1993, May 11) Detailed reference viewed: 7 (1 ULg)Description of diffractive optical elements with self-Fourier transform functions; Roose, Stéphane in Nowak, J.; Zajac, M. (Eds.) Proceedigs of International colloqium on non-conventional optical imaging elements NOIE'93 (1993) In (synthetic) holography and diffractive optics, the optical field is often decomposed in a set of spherical or plane waves. This gives sometimes some problems in calculating the Fourier transform ... [more ▼] In (synthetic) holography and diffractive optics, the optical field is often decomposed in a set of spherical or plane waves. This gives sometimes some problems in calculating the Fourier transform. Because Gaussian beams are their own Fourier transform, it seems to be more natural to use Gaussian beams as basis functions. However, because Gaussian functions are no complete set of basis functions, it is necessary to extend the idea and to use rather Gaussian-Hermite wave functions as an orthonormal basis set. Those ideas can also be applied to general Self-Fourier Transform functions. [less ▲] Detailed reference viewed: 12 (0 ULg)Computer Originated Polarizing Holographic Optical Element recorded in Photopolymerizable layers; Habraken, Serge ; Roose, Stéphane in Optics Letters (1993), 18(9), 738-740 The photosensitive system that is used in most cases to produce holographic optical holograms is dichromated gelatin. Other materials may be used, in particular, photopolymerizable layers. In the present ... [more ▼] The photosensitive system that is used in most cases to produce holographic optical holograms is dichromated gelatin. Other materials may be used, in particular, photopolymerizable layers. In the present investigation, we set out to use the polymer developed in the Laboratoire de Photochimie Générale in Mulhouse in order to duplicate a computer-generated hologram. Our technique is intended to generate polarizing properties. We took into account the fact that no wet chemistry processing is required; grating fringe spacings are not distorted through chemical development. [less ▲] Detailed reference viewed: 3 (1 ULg)An efficient interpolation algorithm for Fourier and diffractive opticsRoose, Stéphane ; ; in Optics Communications (1993), 97(5-6), 312-318 An alternative algorithm for the computation of diffraction (Fourier) integrals is described. Its computation time is comparable with the computation time of an FFT-algorithm combined with zero-framing ... [more ▼] An alternative algorithm for the computation of diffraction (Fourier) integrals is described. Its computation time is comparable with the computation time of an FFT-algorithm combined with zero-framing. On the other hand it allows a free choice of resolution, as in numerical integration. The features of this algorithm are illustrated on the calculation of a PSF of an aberrated lens. [less ▲] Detailed reference viewed: 19 (3 ULg)Space-variant holographic interconnections in dichromated gelatinRoose, Stéphane ; Habraken, Serge in Proceedings of OPTO 92 (1992, April 14) Detailed reference viewed: 5 (3 ULg)Comparison of copy-methods of computer-generated holograms in dichromated gelatinHabraken, Serge ; Roose, Stéphane in Proceedings of HOLO 3 (1991, November 20) Detailed reference viewed: 7 (2 ULg)Use of computer graphics tools in the synthesis of binary CGHsRoose, Stéphane in Proceedings of OPTO 91 (1991, March 26) Compensation of HOE aberrations with an intermediate CGHRoose, Stéphane ; in Lanz, F.; Preuss, H.; Weigelt, G. (Eds.) Proceedings of the 15th Congress of the international commission for Optics: Optics in complex systems ICO-15 (1990, August 05) Detailed reference viewed: 6 (4 ULg)DOE synthesis for optical logic gate illuminationRoose, Stéphane in Lans, F.; Preuss, H.; Weigelt, G. (Eds.) Proceedings of the 15th Congress of the international commission for Optics: Optics in complex systems ICO-15 (1990, August 05) Detailed reference viewed: 4 (1 ULg)DOE synthesis for optical logic gate illuminationRoose, Stéphane in Proceedings of OPTO 90 (1990, May 15) Detailed reference viewed: 8 (3 ULg)Computer-generated holography: development of a software package for the Apple MacintoshRoose, Stéphane Master of advanced studies dissertation (1989) Detailed reference viewed: 4 (0 ULg)Realisation of CGHoe's for Pattern RecognitionRoose, Stéphane ; Conference (1989, July 04) Detailed reference viewed: 2 (0 ULg)Influence of Gaussian beams on the reconstruction of digital Fourier hologramsRoose, Stéphane ; Scientific conference (1989, June 01) Detailed reference viewed: 7 (0 ULg)Holographic optical elements; Roose, Stéphane in Haris, D.; Shay, T. (Eds.) Proceedings of the international conference Lasers '89 (1989) Detailed reference viewed: 9 (3 ULg)Photoelastic effects in Single-Mode Optical FibersRoose, Stéphane ; Scientific conference (1987, June 04) Detailed reference viewed: 2 (0 ULg)Photoelasticiteit in Monomode Optische Vezels en Implicaties in SensortoepassingenRoose, Stéphane Master's dissertation (1987) Detailed reference viewed: 5 (0 ULg)
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