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 VASILE GEORGIANA, BASCHIR LAURENŢIU, SAVASTRU DAN, PUŞCAŞ NICOLAE, SAVU VALERIU, POPESCU AURELIAN, NEGUŢU CONSTANTIN, STAFE MIHAI, TENCIU DANIEL, MIHĂILESCU MONA
Format Patent
LanguageEnglish
Romanian
Published 28.04.2023
Subjects
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
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Summary: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.
Bibliography:Application Number: RO20150000962