High efficiency programmable CGH using DMD generated masks
| العنوان: | High efficiency programmable CGH using DMD generated masks |
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| المؤلفون: | Luca Oggioni, Chiara Bertarelli, Giorgio Pariani, Frederic Zamkotsian, Romain Alata, Andrea Bianco, Patrick Lanzoni |
| المساهمون: | Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Politecnico di Torino = Polytechnic of Turin (Polito), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Holography: Advances and Modern Trends Holography: Advances and Modern Trends, Apr 2019, Prague, France. pp.26, ⟨10.1117/12.2523030⟩ |
| بيانات النشر: | HAL CCSD, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | [PHYS.ASTR.IM]Physics [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM], Opacity, Computer science, Holography, Binary number, 02 engineering and technology, 01 natural sciences, Grayscale, law.invention, 010309 optics, symbols.namesake, Optics, law, 0103 physical sciences, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, ComputingMilieux_MISCELLANEOUS, Wavefront, Pixel, business.industry, 021001 nanoscience & nanotechnology, Fourier transform, symbols, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Spatial frequency, 0210 nano-technology, business, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing |
| الوصف: | Computer Generated Holograms (CGHs) are used for wavefront shaping and complex optics testing. Present technology allows for recording binary CGHs. We propose a Digital Micro-mirror Device (DMD) as a reconfigurable mask, to record rewritable binary and grayscale CGHs on a photochromic plate. Opaque at rest, this plate becomes transparent when it is illuminated with visible light. We have successfully recorded the very first amplitude grayscale Fresnel CGH, with a contrast greater than 50, which was reconstructed with a high fidelity in shape, intensity, size and location. We propose a new Fourier CGH coding scheme leading to a quantification exceeding 1000 within a smaller cell size of 2x2 pixels. This code has been implemented for the BATMAN-instrument logo for visiting very different spatial frequencies. The CGH is recorded with our DMD-based set-up, leading to a 1000x1000 pixels hologram written on a photochromic plate. The reconstruction of the recorded images with a 632.8nm He-Ne laser beam and an imaging lens leads to images with a perfect fidelity in shape and intensity, for any single pixel of the original object. Our proposed code exhibits a much higher resolution, a better compacity and an increased throughput, in comparison with the current Fourier CGHs. These results reveal the high potential of this method for generating programmable/rewritable CGHs. |
| اللغة: | English |
| DOI: | 10.1117/12.2523030⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::103736d2242b842a41d5a052099166d5 https://hal.archives-ouvertes.fr/hal-02414831 |
| رقم الانضمام: | edsair.doi.dedup.....103736d2242b842a41d5a052099166d5 |
| قاعدة البيانات: | OpenAIRE |
| DOI: | 10.1117/12.2523030⟩ |
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