Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/26786
Titolo: | Programmable CGH on photochromic plates coded with DMD generated masks | Autori: | Alata, R. PARIANI, Giorgio Zamkotsian, F. Lanzoni, P. BIANCO, ANDREA Bertarelli, C. |
Data pubblicazione: | 2017 | Rivista: | OPTICS EXPRESS | Numero: | 25 | Fascicolo: | 6 | Da pagina:: | 6945 | Abstract: | 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 of suitable wavelength. We have successfully recorded the very first amplitude grayscale CGH, with a contrast greater than 50, which was reconstructed with a high fidelity in shape, intensity, size and location. These results reveal the high potential of this method for generating programmable/rewritable grayscale CGHs, which combine DMDs and photochromic substrates. | URI: | http://hdl.handle.net/20.500.12386/26786 | URL: | https://www.osapublishing.org/oe/abstract.cfm?uri=oe-25-6-6945 | ISSN: | 1094-4087 | DOI: | 10.1364/OE.25.006945 | Bibcode ADS: | 2017OExpr..25.6945A | Fulltext: | open |
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