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    • Optics

    The laserfocusworld.com Optics channel features articles and other content that discuss precision optical components, systems, and applications.

    Highlights

    (Photo credit: Volker Lannert/University of Bonn)
    Researchers at the University of Bonn’s Institute of Applied Physics—shown here (from left) Niels Wolf, Prof. Dr. Martin Weitz, Andreas Redmann, Dr. Frank Vewinger, and Dr. Julian Schmitt—have designed an approach that generates complex states of light.
    Optics

    ‘Super photon’ enables tap-proof communications

    Justine Murphy
    Jan. 23, 2025
    A new ability to generate complex states of light could hold the key to significantly more secure communications.
    (Image credit: USGS)
    Estimated net decrease in U.S. gross domestic product at different levels of restrictions of China's net exports of gallium (a) or germanium (b) by industry.
    Optics

    Germanium and gallium supply chain disruption escalates for U.S.

    Sally Cole Johnson
    Jan. 20, 2025
    China bans exports of gallium and germanium, critical materials for optics and photonics, to the U.S.
    FIGURE 1. Cooling laser diode in a TOSA package.
    Software & Accessories

    Optical transceivers can beat the heat in the era of high-speed data centers

    Andrew Dereka
    Jan. 16, 2025
    Optical transceivers designed for longer ranges require precise temperature control to maintain laser stability and performance—and thermoelectric coolers provide a solution.
    (Image credit: Xuchen Wang)
    FIGURE 1. A time-varying resonant metasurface: The meta-atom is described by time-modulated surface capacitance and a constant surface inductance. A red arrow depicts a surface eigenmode with amplitude growing in time because its wavenumber is within the metasurface’s momentum bandgap.
    Optics

    Photonic time crystals reimagined

    Sally Cole Johnson
    Jan. 9, 2025
    By expanding the momentum bandgap of photonic time crystals via resonant structures, researchers make a crucial advance toward practical photonic time crystals at optical frequencies...
    Rivada's Outernet: an independent, fully meshed network via laser links.
    Executive Forum

    New space race: Photonics is revolutionizing satellite networks

    Jérémy Picot-Clémente
    Jan. 8, 2025
    A new space race is being driven by unprecedented advancements in photonic technologies, which is revolutionizing satellite networks and redefining global communication infrastructure...

    Recommended

    (Image credit: AmeriCOM/DPOC)
    2501lfw_col_1_web
    Optics

    Meet AmeriCOM’s Defense Precision Optics Consortium

    Sally Cole Johnson
    Dec. 18, 2024
    The Defense Precision Optics Consortium, the research and manufacturing arm of the American Center for Optics Manufacturing (AmeriCOM), is open for business and accepting members...
    (Image credit: Lasnix)
    lasnix
    Optics

    Neutral-density attenuator works with laser beams up to 100 W

    Lasnix
    Nov. 23, 2024
    The Model 801 neutral-density attenuator features four attenuation steps up to 3 OD.
    (Image credit: Optical Surfaces)
    optical_surfaces
    Optics

    Dichroic beamsplitters have use in astronomical research

    Optical Surfaces Ltd
    Nov. 17, 2024
    Dichroic beamsplitters are manufactured to a surface accuracy of λ/20 p-v at 633 nm.
    (Image credit: SPIE)
    2025 SPIE Prism Award finalists and award recipients will be honored during a January 29th gala evening at SPIE Photonics West.
    Executive Forum

    SPIE names 2025 Prism Award finalists

    SPIE: The Int'l Society for Optics & Photonics
    Nov. 12, 2024
    Rapidly developing technology areas such as quantum, sensors, imaging, and biomedical showcase the range and variety of this year's entries and finalists.
    ID 57135231 © Penguiin | Dreamstime.com
    dreamstime_xxl_57135231
    Executive Forum

    AI infrastructure dominates October venture funding

    Eric Hall
    Nov. 8, 2024
    Notable deals were also seen in quantum computing and LiDAR.