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Ultrafast Lasers Enable High-Density Data Storage

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A laser-based data storage and retrieval technique could increase the storage capacity of conventional optical discs, such as DVD and Blu-ray, without the need for special preparatory steps. The scalable technique stores information bits in a multilayer structure using the 3D volume of the disc, and ultrafast lasers are used to keep the changes in the disc on a micron scale. Conventional discs can currently be transformed into ultrahigh capacity storage media by encoding multilevel and multiplexed information within the 3D volume of the recording medium. However, in most cases the...Read full article

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    Photonics Spectra
    Aug 2016
    GLOSSARY
    optical
    Pertaining to optics and the phenomena of light.
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    fluorescence
    The emission of light or other electromagnetic radiation of longer wavelengths by a substance as a result of the absorption of some other radiation of shorter wavelengths, provided the emission continues only as long as the stimulus producing it is maintained. In other words, fluorescence is the luminescence that persists for less than about 10-8 s after excitation.
    detector
    1. A device designed to convert the energy of incident radiation into another form for the determination of the presence of the radiation. The device may function by electrical, photographic or visual means. 2. A device that provides an electric output that is a useful measure of the radiation that is incident on the device.
    pulsed lasersResearch & Technologyultrafast lasersAmericasopticallasersphotonicsfemtosecondfluorescenceFLIMhigh density data storagedetectorSensors & DetectorsCommunicationsdataTech Pulse

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