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  • Volume 54, Issue 10

    • Volume 54, Issue 10

    More content from Volume 54, Issue 10

    Content Dam Lfw Print Articles 2018 10 1810lfw Nb F5
    An in-band optical filter blocks broadband noise that effectively allows high gain but low-noise amplification for ultrashort-pulsed lasers.
    Oct. 1, 2018
    Content Dam Lfw Print Articles 2018 10 1810lfw Nb F2
    Based on a magnetite-containing nanocomposite and an in-line fiber-optic Sagnac interferometer, the device could be used for mapping the brain’s magnetic fields.
    Oct. 1, 2018
    Metasurface lens arrays formed on solid substrates that contact focal-plane arrays focus light onto each pixel to increase sensitivity and allow raising the operating temperature...
    Oct. 1, 2018
    Content Dam Lfw Print Articles 2018 10 1810lfw Nb F1
    Localized heating of a plasmonic substrate by a focused laser ablates or displaces 2D material structures transferred onto the substrate, enabling rapid, submicron, maskless patterning...
    Oct. 1, 2018
    2105 Lfw Lpms Supp 9a
    New editor-in-chief John Lewis thanks predecessor Conard Holton and expresses desire to continue a long tradition of editorial excellence.
    Oct. 1, 2018
    Conard 720
    Not all quantum computer approaches entail photonics, but several rely on high-precision lasers, single-photon detectors, and optical fiber.
    Oct. 1, 2018
    FIGURE 1. As indicated by this site information form, successfully performing a site survey requires essential information that includes room details, local noise sources, microscope details and positioning, and how the site survey is performed.
    From site surveys to active vibration control, steps can be taken to keep your superresolution microscope stable and ready to collect data.
    Oct. 1, 2018
    FIGURE 1. An aspheric lens is mounted on a brass arbor.
    Using a metrology device and corrective software, CNC polishers can now use deterministic polishing to directly achieve form errors of sub-100 nm.
    Oct. 1, 2018
    (Courtesy of the Wei Min lab, Columbia University)
    FIGURE 1. As living cells take in heavy water, newly made proteins, lipids, and DNA incorporate deuterium; under the light of an SRS microscope, various macromolecules can be identified within a single cell. University of California/Irvine chemistry professor Eric Potma, not involved in the work, called the technique beautifully simple, and said that “as microscopes continue to get smaller, deuterium-labeled SRS imaging may help to catch tumors at much earlier stages.”
    A noninvasive, label-free technique, stimulated Raman scattering (SRS), is enabling important discoveries and tools.
    Oct. 1, 2018
    FIGURE 1. Optical spectra of the steady-state output pulse of a passively mode-locked fiber laser with an all-normal-dispersion laser resonator have been simulated using RP Fiber Power software; the bandwidth of the intracavity bandpass filter is varied from 3 to 12 nm.
    The design of fiber-based ultrafast laser sources via numerical simulations leads to prototype and product designs with proven handling of nonlinear effects.
    Oct. 1, 2018
    FIGURE 1. Detailed is the principle of laser Doppler flowmetry (LDF).
    Laser Doppler flowmetry and spectral biomarker monitoring are among the photonics technologies seeking ‘tricorder’ status for noninvasive medical diagnosis and treatment.
    Oct. 1, 2018
    FIGURE 1. Over the past 8 years, switch ASIC capacity growth has far outpaced that of optical modules; this widening gap is also reflected in relative cost per capacity (cost per Gbit/s), which for single-mode fiber-optic modules is now higher than for Ethernet switches.
    Photonic integrated circuits (PICs) and silicon-photonics-based optical engines will expand datacenter capabilities over the next decade.
    Oct. 1, 2018
    (Courtesy of Seno Medical)
    Masses initially categorized as BI-RADS 4a and suspicious on ultrasound because of irregular shape and microlobulation (a) were ultimately downgraded as nonsuspicious (BI-RADS 3) with OA/US technology (b) because of benign-appearing internal and capsular vessels.
    The breast-tissue imager, which combines optoacoustic technology with B-mode ultrasound, has ultrastable optomechanics to increase reliability.
    Oct. 1, 2018
    (Image credit: Harbin Institute of Technology)
    Extrinsic structural color is possible by varying the periodicity of 205 nm thick MAPbBr3 perovskite gratings. The left panel compares experimental reflection spectra (solid lines) and simulated counterparts (dashed lines) as period (p) varies between 280, 310, 320, 340, 382, 400, and 400 nm, and gap (d) varies between 163, 107, 140, 105, 80, 110, 100, and 70 nm. The right panel shows the measured colors, SEM images, and calculated colors. The numerical color palette (left) is obtained by stepwise tuning of p and d.
    Mixing structural and emission colors in perovskite optical gratings enables dynamic, tunable-color displays.
    Oct. 1, 2018