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  • Volume 40, Issue 7

    • Volume 40, Issue 7

    Th 154196
    Optics

    Mask inspection rises to the subwavelength challenge

    July 1, 2004
    As wafer fabs transition from 248-nm optical lithography to 193 nm and beyond, reticle-inspection systems are adopting sophisticated image-enhancement techniques to keep pace....
    Th 154184
    Detectors & Imaging

    An inner glow

    July 1, 2004
    Genetically engineered bioluminscence enables optical imaging of the spread of disease, the effectiveness of drug therapies, and the expression of genetic traits inside of living...
    Th 154102
    Lasers & Sources

    Ultraviolet DPSS lasers gain industrial strength

    July 1, 2004
    Recent improvements in short-pulse-width, short-wavelength UV diode-pumped solid-state (DPSS) lasers have resulted in robust, production-capable systems.
    Th 154109
    Detectors & Imaging

    Infrared imaging learns from camera industry

    July 1, 2004
    Potential advantages of mosaicked multispectral image acquisition include cost, physical size, and mechanical robustness.
    Th 154201
    Optics

    Diffractive MEMS: a versatile tool

    July 1, 2004
    A MEMS device diffracts light but uses the returning zero-order light as its output. The device is well suited for wavelength management in both telecommunications and spectroscopy...

    More content from Volume 40, Issue 7

    Th 154061
    Optics

    Target simulator tests military IR sensors

    July 1, 2004
    In the past, when the German Armed Forces Research Establishment (Greding, Germany) wanted to test IR aircraft-tracking technology, it had to fly one or more military jets overhead...
    Th 154067
    Research

    Side-scanning configuration

    July 1, 2004
    Hoping to raise $20,000 for cancer research, "Team Photon" will participate in the Pan-Mass Challenge, Aug. 7–8. The 200-mile bike trek from Sturbridge, MA, to Provincetown, MA...
    Th 153855
    Detectors & Imaging

    SID highlights diverse display technologies

    July 1, 2004
    Large-flat-panel-display (FPD) televisions are the looming "killer application" driving a strongly optimistic flat-panel-display market with liquid-crystal-display (LCD) and plasma...
    Th 153860
    Research

    Polymer OLED efficiency may double for long chains

    July 1, 2004
    The theoretical 25% efficiency limit for light production from organic light-emitting diodes (OLEDs) based on pi-conjugated polymers has been challenged by new calculations based...
    Th 153863
    Optics

    Porous silicon layers form broadband mirrors

    July 1, 2004
    A research team based at the University of New South Wales (Sydney, Australia) has designed, fabricated, and tested laser mirrors made entirely from porous silicon (PSi).
    Th 154068
    Detectors & Imaging

    Laser altimeter set to study Mercury

    July 1, 2004
    Scientists from NASA Goddard Space Flight Center are keen to see how the compact laser altimeter they have put together for the MESSENGER (Mercury Surface, Space Environment, ...
    The Airborne Laser is designed to operate at multimegawatt power levels and to shoot down boost-phase ballistic missiles at ranges of up to a few hundred kilometers.
    Research

    Airborne Laser is behind schedule and over budget

    July 1, 2004
    The Pentagon's first effort to build a usable high-energy laser weapon is running far behind schedule and well over budget.
    Th 153880
    Optics

    Bimorph mirror focuses to record intensities

    July 1, 2004
    Scientists at the Central Laser Facility (CLF) of the Rutherford Appleton Laboratory (Didcot, England) have developed novel adaptive-optic mirrors to steer and improve the beam...
    Th 153856
    Fiber Optics

    Air-core holey fiber becomes sensitive gas sensor

    July 1, 2004
    Detection of traces of explosive or poisonous gases like methane, hydrogen cyanide, ammonia, or acetylene is sometimes desired in places that are inaccessible or dangerous to ...
    Th 154198
    Research

    Ever vigilant, optical sensors already monitor much of our daily lives

    July 1, 2004
    Novel deployment methods and new ways of combining and processing data from multiple devices will make optical sensing even more ubiquitous than it is today.
    Th 153634
    Research

    Newsbreaks

    July 1, 2004
    InGaN-based surface-emitting laser has a horizontal cavity; Terahertz QWIP responds at 42 µm; Odd-looking photonic-crystal-waveguide corner has low transmission loss; MORE...
    Th 153852
    Optics

    Miniature power generator converts infrared to electricity

    July 1, 2004
    Thermophotovoltaic (TPV) devices are similar to ordinary photovoltaic devices in concept and form, except that TPV devices produce electricity from IR as well as visible light...