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  • Volume 49, Issue 11

    More content from Volume 49, Issue 11

    FIGURE 1. Based on work from the University of St. Andrews, M Squared Lasers has further developed an intracavity-pumped OPO with a dual-axis scanner that places the nonlinear crystal into the pump resonator to gain access to the high intracavity field.
    A novel, laser-based hyperspectral imaging technology can detect minute quantities of threat materials at range, with applications from defense and security to the oil and gas...
    Nov. 13, 2013
    Conard Holton2
    In war zones, at airport security screening, around oil refineries, in manufacturing facilities-the list of hazardous environments or potential danger reflects the nature of the...
    Nov. 12, 2013
    Wolfgang Gries
    In this column, I interview Wolfgang Gries, founder and CEO of DirectPhotonics, a maker of ultra-high-brightness direct-diode laser solutions for materials processing, about his...
    Nov. 8, 2013
    Courtesy of K. Denault/UCSB
    The spectral density of a near-UV laser in combination with two different types of RGB phosphors is shown for RGB1 (a) and RGB2 (b) phosphors. Bright white light (bottom) is created using laser diodes in combination with phosphors; at left in the inset is an image of the phosphor with no illumination.
    Researchers at the University of California, Santa Barbara (UCSB) have combined laser diodes with inorganic phosphors to create efficient, stable sources of white light.
    Nov. 7, 2013
    (Courtesy of Stanford University/SLAC National Laboratory)
    A dielectric laser accelerator (DLA) structure consists of two opposing binary gratings (a). An 800 nm Ti:sapphire laser intersects the electron beam and the plane of the gratings (b), and the inset shows the field-polarization direction as well as the effective periodic phase reset, or alternating particle acceleration (red arrows) and deceleration (black arrows), as well as the rest of the setup.
    Stanford University, SLAC National Accelerator Laboratory, University of California, Los Angeles (UCLA), and Tech-X Corporation researchers have demonstrated high-gradient (beyond...
    Nov. 7, 2013
    FIGURE 1. The optics for a holographic projector are quite simple.
    Researchers from Chiba University and Warsaw University of Technology have demonstrated a lensless zoomable holographic projector based on so-called scaled Fresnel diffraction...
    Nov. 6, 2013
    Standoff stimulated Raman scattering (SRS) images of ammonium nitrate (NH3NO4) are shown on (a) cotton at a 10 m distance and (b) blue textured plastic at 7.5 m; the explosive TNT is also shown on (c) cotton at 10 m. Substrate sample distribution is approximately 100 μg/cm2. The on/off resonance frequencies targeted using the pulse shaper for detecting ammonium nitrate are 1043 cm-1/950 cm-1; the values for the TNT sample are 1360 cm-1/1043 cm-1.
    Borrowing methods from highly chemical-specific coherent anti-Stokes Raman spectroscopy (CARS) technology, researchers at Michigan State University (MSU) have developed a single...
    Nov. 6, 2013
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    Tsinghua University and Capital Normal University researchers have demonstrated that large-diameter polymer light pipes can transmit singlemode terahertz radiation when fabricated...
    Nov. 6, 2013
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    Coherent has unveiled an optical bus that combines multiple laser wavelengths into a single instrument (for example, to simultaneously excite multiple fluorophores).
    Nov. 5, 2013
    It is important in the petroleum industry to be able to characterize different refined-oil mixtures, which include diesel/gasoline and gasoline/gasoline (different octane grades...
    Nov. 5, 2013
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    While the 802 cm-1 Raman shift band of cyclohexane measured with a traditional Czerny-Turner spectrograph has a peak width of 9.16 cm-1, the same peak measured with an IsoPlane...
    Nov. 4, 2013
    Content Dam Lfw Print Articles 2013 11 1311lfwnbf2web
    A high-power mid-infrared (mid-IR) fiber laser developed at Zhejiang University in China and based on quasi-synchronously pumping periodically poled magnesium-oxide doped lithium...
    Nov. 4, 2013