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Covering the cutting edge global research in light based technologies.

  • Professor Yingtian Pan, right, and his student Jiang You, left, and lab associate Ki Park, developed a quantitative imaging technique that shows how cocaine disrupts brain blood flow

    What’s New for OCT?

    Optical coherence tomography (OCT), which has been used for non-invasive ophthalmology imaging for some time, is now starting to find greater clinical use in other medical applications such as cardiology. For example, physicians are using OCT to...
  • The flexible sensor could be integrated into low-cost sensing systems for in-line diagnostics and monitoring

    Multispectral Light Sensors Built from Doped Nanorods

    Semiconductor-based photodiodes are widely used in industry to detect light at a range of frequencies from the ultraviolet through the visible to the near infra red. Such photodiodes operate by absorbing photons, which then generate a flow of...
  • Professor Zenghu Chang from the Department of Physics and the College of Optics and Photonics at the University of Central Florida set a world record when he produced an attosecond pulse just 67as in duration

    Lasers Freeze Electron Movement

    Massachusetts Institute of Technology (MIT) professor Harold Edgerton is widely known as a pioneer in the field of ultra-high speed photography. By synchronizing strobe flashes with the motion of objects, then taking a series of photographs through...
  • IMEC researchers have found that illumination stabilizes the morphology of polymerfullerene bulk heterojunction BHJ solar cells that are exposed to elevated temperatures

    Light-Induced Stabilisation of Organic Solar Cells

    Organic solar is a topic of much interest because of their light weight, flexibility and low manufacturing costs. At IMOMEC, Imec’s associated lab at Hasselt University in Belgium, researchers have found that illumination stabilizes the...
  • An interferogram showing the photoelectron energy vs delay time between identical femtosecond pump and probe pulses, which excite coherent three-photon photoemission at a single crystal silver surface The interferogram is taken from a movie of photoelectr

    Researchers Observe Transient Excitons in Metals

    For the first time, researchers at the University of Pittsburgh in Pennsylvania (US) have observed transient excitons in metals. They discovered that the surface electrons of silver crystals can maintain the excitonic state more than 100 times...
  • Illustration of new technique using optical coherence tomography that could help surgeons differentiate a human brain tumor, red, from surrounding noncancerous tissue, green Credit Carmen Kut, Jordina Rincon-Torroella, Xingde Li and Alfredo Quinones-Hinoj

    Optical Coherence Tomography Guides Brain Surgeons

    In brain tumor surgery, neurosurgeons walk a tightrope between removing cancerous tissue and keeping crucial tissue intact. Thus far, visually distinguishing the two is often impossible. Now researchers at Johns Hopkins University in Baltimore,...
  • Nanoscale Imaging With Table-Top Extreme UV Laser System at Swinburne University of Technology

    Nanoscale Imaging With Table-Top Extreme UV Laser System

    Researchers at Swinburne University of Technology in Australia have discovered a new way to generate bright beams of coherent extreme UV radiation using a table-top setup that could be used to produce high resolution images of tiny structures at...
  • Spectroscopy Tool Measures Distance Between Phonon Collisions

    Spectroscopy Tool Measures Distance Between Phonon Collisions

    Densely packed nanotransistors on a computer chip can occasionally give off too much heat and fry the microelectronics. To alleviate the effect, manufacturers usually try to gauge a transistor’s temperature rise using a classical diffusion...
  • Worlds Smallest Integrated-Nanophotonics Polarization Beamsplitter
  • Magnus Egerstedt, Schlumberger Professor and associate chair for research in Georgia Techs School of Electrical and Computer Engineering

    Controlling Swarms of Robots by Smart Tablet

    Researchers at the Georgia Institute of Technology, Atlanta, Georgia US), have created a system for controlling a swarm of robots from a smart tablet. Able to reasoning about so-called density functions and to “change their minds,” the...
  • Functional and nonlinear optical metasurfaces

    Enhancing Nonlinear Effects of Optical Metasurfaces

    Optical metasurfaces are two-dimensional materials much thinner than the wavelength of light. The planar structures can be engineered to exhibit properties not present in natural materials, e.g., tunability or enhanced nonlinear effects. Thus, the...

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