Multilayer optical storage disk based on the frequency up-conversion effect from rare-earth ions

Ho Pui HoThe Chinese University of Hong KongDepartment of Electronic EngineeringShatin, N.T.Hong Kong, ChinaW. W. WongS. Y. WuCity University of Hong KongDepartment of Electronic Engineering83 Tat Chee Avenue, KowloonHong Kong, ChinaAbstract. We present a multilayered optical storage disk design basedon the use of frequency up-conversion in rare earth. This design offersthe potential of increased optical storage density. In our experiment, athree-layered sample is prepared by stacking three sections of a thinglass slide on which stripes of Ho