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  • Refractometer - Definition and Applications
    Article - 20 Jan 2014
    A refractometer is an optical device used for measuring the extent to which light is bent or refracted when it moves through a substance.
  • An Introduction to Optical Harmonics
    Article - 6 Jan 2014
    Non-linear crystals are the materials in which dielectric polarization exhibits a non-linear response with respect to the electric field of the light.
  • The Diffraction Limits in Optical Microscopy
    Article - 19 Dec 2013
    The optical microscope, also called the light microscope, is the oldest type of microscope which uses visible light and lenses in order to magnify images of very small samples. It is a standard tool...
  • What is Electro-Optical Rectification?
    Article - 20 Jun 2013
    Optical rectification or electro-optic rectification may be described as a non-linear optical process that generates a quasi-DC polarization in a non-linear medium by passing an intense beam of light.
  • What is a Mercury Vapour Lamp?
    Article - 18 Jun 2013
    A mercury vapour lamp is a high-pressure electric arc discharge lamp that provides intense illumination over a selected range of wavelengths.
  • What is an Optical Fiber Isolator?
    Article - 13 Jun 2013
    Optical isolators are optical elements which allow light to propagate in only one direction. The propagation of light in one single direction is required in order to prevent optical back scattering or...
  • What is a Periscope?
    Article - 7 Jun 2013
    A periscope can be defined as an optical instrument that allows the viewing of objects that are not in the direct life of vision. Periscopes prove to be of great help to submariners to have a view of...
  • Ytterbium Oxide Lasers - Properties and Applications
    Article - 16 May 2013
    Ytterbium oxide is a highly insoluble and thermally stable ytterbium source that is suitable for ceramic, optic and glass applications. Ytterbium-doped glasses and laser crystals have a simple...
  • Neon-Copper Lasers – Properties and Applications
    Article - 14 May 2013
    Neon Copper laser are known for generating deep ultraviolet wavelengths. The wavelength produced by this laser is 248 nm. This laser is known for having narrow oscillation line widths (less than 3...
  • Helium Selenium Laser – Properties and Applications
    Article - 14 May 2013
    Helium selenium laser falls into the category of metal-vapour lasers. The operation mode of this laser is similar to that of the helium cadmium laser. Spontaneous emission occurs when selenium...

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