OPTICAL MEMORY CELL
The invention relates to an optical memory cell and to a process for manufacturing the same. The claimed cell comprises a glass prism (3) on whose base a metal film (12) and a film (11) of amorphous chalcogenide material are deposited, a writing/erasing polarized light source (7), a reading light so...
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Main Authors | , , , , , , , , , |
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Format | Patent |
Language | English Romanian |
Published |
28.04.2023
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Abstract | The invention relates to an optical memory cell and to a process for manufacturing the same. The claimed cell comprises a glass prism (3) on whose base a metal film (12) and a film (11) of amorphous chalcogenide material are deposited, a writing/erasing polarized light source (7), a reading light source (1) and a polariser (2), a photodiode (4) measuring the light reflected on the prism base, where the illumination with polarized light beam (7) induces the optical anisotropy of the refraction index into the film (11) of chalcogenide material, the direction thereof being modified in the same time with the change of polarization of said laser by means of an optical element (9), the anisotropy being kept also after stopping the illumination. |
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AbstractList | The invention relates to an optical memory cell and to a process for manufacturing the same. The claimed cell comprises a glass prism (3) on whose base a metal film (12) and a film (11) of amorphous chalcogenide material are deposited, a writing/erasing polarized light source (7), a reading light source (1) and a polariser (2), a photodiode (4) measuring the light reflected on the prism base, where the illumination with polarized light beam (7) induces the optical anisotropy of the refraction index into the film (11) of chalcogenide material, the direction thereof being modified in the same time with the change of polarization of said laser by means of an optical element (9), the anisotropy being kept also after stopping the illumination. |
Author | VASILE GEORGIANA MIHĂILESCU MONA SAVU VALERIU PUŞCAŞ NICOLAE SAVASTRU DAN BASCHIR LAURENŢIU NEGUŢU CONSTANTIN POPESCU AURELIAN STAFE MIHAI TENCIU DANIEL |
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DocumentTitleAlternate | CELULĂ CU MEMORIE OPTICĂ |
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RelatedCompanies | INSTITUTUL NAŢIONAL DE CERCETARE-DEZVOLTARE PENTRU OPTOELECTRONICĂ - INOE 2000 UNIVERSITATEA POLITEHNICA DIN BUCUREŞTI |
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Snippet | The invention relates to an optical memory cell and to a process for manufacturing the same. The claimed cell comprises a glass prism (3) on whose base a metal... |
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SubjectTerms | AUXILIARY PROCESSES IN PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS |
Title | OPTICAL MEMORY CELL |
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