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    • Volume 54, Issue 11

    More content from Volume 54, Issue 11

    A coded access optical sensor (CAOS) camera for laser-beam imaging has at its heart a digital micromirror device (DMD) in which various combinations of pixels can be switched on and off to fulfill the requirements of different coding schemes.
    In its many configurations, the CAOS camera images laser beams in different ways that match differing system requirements.
    Nov. 2, 2018
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    An electro-optically modulated continuous-wave laser produces pulses every 100 ps with sub-optical-cycle accuracy, resulting in a frequency comb useful for biological imaging....
    Nov. 2, 2018
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    Optical gas imaging (OGI) cameras rely on changes in infrared (IR) radiation as it passes through a gas. The technique is still relatively new and no official standard yet exists...
    Nov. 1, 2018
    Spin-orbit coupling of light in the emission of elliptically polarized emitters can cause wavelength-scale positioning errors.
    Nov. 1, 2018
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    Nominal 2 µm thulium fiber lasers have only reached repetition rates up to 1.6 GHz. However, active mode locking extends this rate more than an order of magnitude, making communications...
    Nov. 1, 2018
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    Spin-orbit coupling of light in the emission of elliptically polarized emitters can cause wave-length-scale positioning errors.
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    Editor in chief John Lewis welcomes back contributing editor Jeff Hecht and discusses November issue content, including laser weapons and automotive lidar.
    Nov. 1, 2018
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    Changes in the global economic and political situation are being to affect laser markets, but the real consequences are only beginning to emerge.
    Nov. 1, 2018
    FIGURE 1. Aligning parts that have become misaligned because of stress, creep, or settling processes is an application for active shims, when submicron or even nanometer precision and stability are required.
    Because of the down-to-nanometer-range resolution of their piezo elements, active shims cover applications in precision engineering and alignment of optical components.
    Nov. 1, 2018
    FIGURE 1. Numerous materials suitable for use in IR optics include chalcogenide glasses, semiconductors, water-soluble crystals, and others; the chalcogenides are shown in blue.
    Many optical materials exist for designing IR optics; chalcogenide BD6 has some advantages when compared with legacy materials.
    Nov. 1, 2018
    Shank tips on the University of Michigan neural probe, designed for reduced invasiveness in accessing deep brain structures with optogenetics, feature monolithically integrated dielectric waveguide tips (a 7 μm core with 2 μm cladding on both the top and bottom).
    Optogenetics has rocked the world of neuroscience for more than a decade now. But neuroscientists want more from the technique—and less, including more depth and less invasiveness...
    Nov. 1, 2018
    FIGURE 1. Luminance vs. lumen output is shown for phosphor-converted light-emitting diodes (pcLEDs) and lasers.
    Now approaching luminance of 100 million nits, phosphor-converted LEDs target applications that not only con-vey concentrated illumination at low cost, but also transmit information...
    Nov. 1, 2018
    (Courtesy of Blackmore)
    FIGURE 1. Four Blackmore lidar sensors are mounted atop a BMW X5 test vehicle on the road.
    The overlap is large between automotive lidar and familiar names in the photonics industry.
    Nov. 1, 2018
    FIGURE 1. A visualization shows the concept of preparing a glass façade for a building by laminating glass sheets together with a perovskite solar module.
    The involvement of industry partners and clients in the new product development process directly benefits the scaling of perovskite PV technology from the lab to commercial and...
    Nov. 1, 2018