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Optical data storage is the use of light to write and read information to and from a memory device. Storage can be achieved by using lasers to pattern a surface, such as on a compact disc, or altering the physical properties of a small volume inside a light sensitive material.
The study introduces a novel approach to information encoding using 2D random wrinkles PUFs in a 3D framework, utilizing polarization manipulation and data extracting functions to enhance security in authentication systems.
Designing high efficient optoelectronic memory remains a challenge. Here, the authors report a novel optoelectronic memory device based on a photosensitive dielectric that is an insulator in dark and a semiconductor under irradiation with multilevel storage ability, low energy consumption and good compatibility.
Efficient creation of anisotropic nanopores and associated birefringence in fused silica by elliptically polarized femtosecond laser pulses is observed. Applications in multiplexed optical data storage and optical elements are demonstrated.
The ability to create and erase three-dimensional patterns of perovskite quantum dots in glass using a femtosecond laser could bring new opportunities in displays, security marking and data storage.
