All optical sub diffraction multilevel data encoding onto azo polymeric thin films - Condensed Matter > Materials ScienceReport as inadecuate




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Abstract: By exploiting photo-induced reorientation in azo-polymer thin films, wedemonstrate all-optical polarization-encoded information storage with ascanning near-field optical microscope. In the writing routine, 5-level bitsare created by associating different bit values to different birefringencedirections, induced in the polymer after illumination with linearly polarizedlight. The reading routine is then performed by implementingpolarization-modulation techniques on the same near-field microscope, in orderto measure the encoded birefringence direction.



Author: Matteo Savoini, Paolo Biagioni, Lamberto Duo', Marco Finazzi

Source: https://arxiv.org/







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