Three-Dimensional Optical Memory Using Glasses as a Recording Medium through a Multi-Photon Absorption Process

摘要: The feasibility of multilayered optical data storage was examined in SiO2 and Ge–SiO2 glasses by using a focused 800 nm, 120 fs, 200 kHz pulsed laser. are transparent the wavelengths ranging from 300 to 1000 nm. After irradiation with nm tightly femtosecond laser, refractive-index bit formed glasses. relationships between size versus average power duration laser pulse have been examined. ESR spectra showed significant increase concentration SiE' GeE' color centers irradiated Writing 3-dimensional inside based on multi-photon absorption process is expected become useful method used fabricate memory both an ultra-high density recording speed.