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Refraction

Refraction news and technical articles from Laser Focus World. Search Refraction latest and archived news and articles

  1. Refraction of gamma rays in silicon opens the way for gamma-ray optics

    Article

    Fri, 4 May 2012

    … researchers has discovered "significant" refraction of gamma rays by silicon. 1 The scientists ..... highly sensitive instruments to measure refraction very precisely. The gamma rays produced ..... refracted half the gamma-ray beam. The refraction of this half-beam was then detected …

  2. Conical refraction becomes practical

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    Tue, 1 Jun 2004

    … an optical phenomenon called conical refraction . Later that same year, Humphrey Lloyd ..... biaxial birefringent crystals, conical refraction causes a ray passing through a crystal ..... cone of light. In internal conical refraction , an entering ray diverges internally …

Related Topics:

  1. Cloaking
  2. Fresnel
  3. Chromatic Aberration
  4. Spectrophotometer
  5. Optical Imaging
  6. Femtosecond Laser
  1. Negative Refraction : Nanofabrication creates left-handed materials at optical wavelengths

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    Sun, 1 Jan 2006

    The creation of an optical lens based on negative refraction , and thus capable of imaging features smaller than the ..... are possible for visible light waves, actual negative refraction (that is, bending of light in the opposite direction …

  2. Gold- and silver-free metamaterial shows negative refraction in the near-IR

    Article

    Mon, 14 May 2012

    … in a metamaterial that experimentally demonstrates negative refraction in the near-IR. Using the metals is impractical for industry ..... dispersion to become hyperbolic, which results in negative refraction . Research findings are detailed in a paper appearing today …

  3. METAMATERIALS: Negative refraction demonstrated in the green

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    Tue, 1 May 2007

    … end of the visible spectrum, negative refraction has only been observed from a NIM operating ..... France) have now demonstrated such refraction in the blue-green region of the visible ..... behaves as if it had a negative index of refraction . The NIM was fabricated by sandwiching …

  5. PLASMONICS:Index-of-refraction sensors display ‘virtually unlimited’ sensitivity

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    Wed, 1 Feb 2006

    … function of reflection angle to determine index-of- refraction sensitivity. Although the analysis normally takes place ..... temperature sensors (temperature alters the index of refraction ).” Gail Overton

  6. Optical metamaterial has negative refraction , simple design

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    Thu, 1 Nov 2007

    … negative permittivity and permeability, and thus negative refraction . Now, researchers at Princeton University (Princeton ..... have created a much simpler structure that achieves negative refraction : alternating layers of semiconductors. Requiring only an …

  7. Negative refraction focuses on the superlens

    Print

    Thu, 1 Feb 2001

    … within the microwave region. And in collaboration with Hammersmith Hospital in London, Pendry has designed a negative- refraction index lens for radio waves for focusing in magnetic-resonance imaging. "More conventional materials might make perfect …

  8. METAMATERIALS: Slow light could make for a fast Web

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    Wed, 1 Oct 2008

    … Advances in the use of metamaterials for negative refraction are being fancifully described by the media ..... that is, contrary to the direction of normal refraction . Previous negative- refraction approaches have been demonstrated in the microwave …

  9. Zero-refractive-index metamaterial at IR wavelength engineered at Columbia University

    Article

    Tue, 26 Jul 2011

    … optical nanostructure or metamaterial with a zero index of refraction and fully controlled light dispersion no longer needs to be ..... the complete nanostructure behaved as one with an index of refraction of zero. "We can now control the flow of light, the fastest …

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