Optical data storage in films of silver oxide using ultrashort laser pulses with local modification of silver oxide by irradiation film by laser pulses in FEM to 2nd range with wavelength in near infra red (IR) spectral range

摘要

Optical data storage uses film of silver oxide which is irradiated with laser pulses in FEM to second range at wavelength in near IR spectral range so silver oxide is locally modified and data are stored in it. Writing of data takes place with high laser pulse repetition rates in megahertz (MHz) range and with laser pulse intensities above 0.5 MW per square cm. Read-out method use excitation wavelength below that for data storage.