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    Image of Abraham Lincoln: Popular Mechanics, March 1924.
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    2025 SPIE Prism Award finalists and award recipients will be honored during a January 29th gala evening at SPIE Photonics West.

    Top Stories

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    FIGURE 1. Cryptographic keys ensure controlled access to communication channels.
    Detectors & Imaging

    Quantum key distribution: Secure optical communications

    Ye Cao
    Nov. 18, 2024
    Avalanche photodiodes, infrared sensors capable of detecting single photons, are at the heart of many QKD systems. Their sensitivity allows them to discern the faintest of light...

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    Two thin flakes of niobium oxide dichloride stacked on each other and photographed under a light microscope. One flake’s crystalline grain (gray flake) is positioned perpendicularly to the grain of the other flake (green flake).
    Optics

    Photonics breakthrough can drastically shrink quantum computing parts

    Leevi Kallioniemi
    Nov. 14, 2024
    Very thin materials can create entangled pairs of photons to be used as quantum bits.
    FIGURE 1. Depiction of the ultrahigh-density optical memory. Red dots represent rare earth ion impurities, and blue dots represent defects onto which the excitation is stored by using near-field energy transfer processes. Many optically addressable RE ions within the diffraction-limited excitation volume (red beam) result in an enhanced bit density.
    Quantum

    Near-field energy transfer provides route to ultrahigh-density solid-state optical memories

    Swarnabha Chattaraj
    Nov. 13, 2024
    A combined framework of quantum electrodynamics and quantum mechanical electronic structure theories reveals a promising pathway to exceed the current limitation on data storage...
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    Podcasts

    PODCAST: Interview with Teresa Pace, L3Harris Technologies

    Justine Murphy
    Nov. 12, 2024
    Episode 25 of Following the Photons: A Photonics Podcast features Teresa Pace, an Engineering Fellow at L3Harris Technologies.

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    FIGURE 1. The refractive index of UV-grade fused silica as a function of wavelength (left); this dispersion can lead to temporal distortion for ultrafast laser pulses. Attempting to focus a white light source through a single lens results in different focal planes for the various component colors (right); this is analogous to how ultrashort pulses experience temporal distortion when passing through a medium.

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    A neutral atom qubit register, which continuously reloads new atoms into the register.

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    Avantier Stress-Free Objective Lenses

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    Julian Hayes, CEO of Chromacity Ltd.
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    Photonics Hot List: November 15, 2024

    Justine Murphy
    Nov. 15, 2024
    In this episode: microwaves could treat brain diseases, a silent amplifier boosts space communication, and the latest business mergers & acquisitions.
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    Photonics Hot List: November 8, 2024

    Justine Murphy
    Nov. 8, 2024
    In this episode: a tech shift boosts AI and data networks, the latest photonics business sales and acquisitions news, and self-healing chalcogenide glass.
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    LightPath Technologies’ BDNL BlackDiamond chalcogenide glasses

    LightPath Technologies Inc
    Nov. 7, 2024
    LightPath Technologies’ BDNL BlackDiamond chalcogenide glasses allow designers to utilize a variety of optical applications while minimizing the use of crystal glass. This enables...

    Leadership in Lasers and Photonics

    Welcome to Laser Focus World's Leadership in Lasers and Photonics program.

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