Optical recording in Rb loaded-porous glass by reversible photoinduced phase transformations.
We report reversible phase transformations in Rb loaded-porous glass irradiated with weak laser light which allow us to realize image storage on it. The effect is due to photo-induced changes of Rb distribution inside the glass pores, where atomic photodetachment and confinement produce either formation or evaporation of Rb nanoclusters. These processes depend on light frequency and intensity making controllable by light the porous glass transparency. We demonstrate that porous glass doped with Rb can be used as a support to record a light pulse for a long time as well as to remember the order of light colors in an illumination sequence.
CNISM and Physics Department, University of Siena, Via Roma 56, Siena 53100, Italy. burchianti@unisi.it
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Burchianti
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Bogi
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Marinelli
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Mariotti
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Moi
D004867:Equipment Design; D019544:Equipment Failure Analysis; D005898:Glass / Q000737:chemistry*; D016247:Information Storage and Retrieval / Q000379:methods*; D008027:Light; D049329:Nanostructures / Q000737:chemistry*; D055095:Optics and Photonics / Q000295:instrumentation*; D044367:Phase Transition; D016062:Porosity; D012413:Rubidium / Q000737:chemistry*
D012413:Rubidium