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  • British scientists Developed Laser Than Can Detect Counterfeit Drugs Through Packaging
    News - 11 Oct 2007
    A laser that can detect counterfeit drugs through packaging has been developed by British scientists, allowing investigators to check on their authenticity without opening sealed bottles or packs....
  • What is a Wavenumber?
    Article - 16 Sep 2014
    Wavenumber is defined as the number of complete wave cycles per unit length of a linear space. It can also be referred to as the spatial frequency of the waves represented in radians per unit distance...
  • Optical Coherence - Definition and Applications
    Article - 6 May 2014
    Optical coherence is associated with interference effects of light. A field of light is said to be coherent when the electric field values at different locations are in a fixed phase.
  • Michelson Interferometer - Definition and Applications
    Article - 6 May 2014
    Michelson interferometer is a tool to produce interference between two beams of light. It is the most common design for optical interferometry and was invented by Albert Abraham Michelson.
  • Fluorescence - Definition and Applications
    Article - 6 May 2014
    Fluorescence is the emission of light by an atom or molecule following absorption of light or other radiation by the molecule. The emitted light arises due to the transition of the excited electrons...
  • An Introduction to Optical Path Length
    Article - 28 Oct 2014
    In the field of optics, optical path length or optical distance is the product of the geometric length of the path light follows through a system, and the index of refraction of the medium through...
  • Phase-Contrast Microscope - Definition and Applications
    Article - 6 May 2014
    Phase-contrast microscope is a type of light microscopy that intensifies contrasts of transparent and colorless objects by influencing the optical path of light. Phase-contrast microscopy is an...
  • Optical Cavity - Definition, Properties and Applications
    Article - 1 May 2014
    An optical cavity or an optical resonator may be described as an arrangement of mirrors that produce a standing light wave resonator.
  • Birefringence - Definition and Applications
    Article - 1 May 2014
    Optical birefringence is an inherent property of a material that causes double refraction of a ray of light resulting in polarization of the light wave.
  • How Will Optical Imaging Change in The Future?
    Article - 5 Nov 2014
    Optical imaging is a technology which explains the characteristics of infrared, ultraviolet and visible light. ​It is a non-invasive technique which uses non-ionizing radiation in order to...

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