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  • The Nano-Sandwich in Optoelectronics
    Article - 3 Mar 2017
    Graphene is an allotrope of carbon, in which the carbon atoms form a single-layered sheet with a hexagonal honeycomb lattice, where the carbon atoms are arranged in the vertices of each hexagon.
  • Cladding Modes - Definition and Applications
    Article - 15 May 2014
    Cladding modes are the regions or modes in optical fibers that are not restricted to the region around the core of the fiber. More specifically, cladding modes are regions in which the intensity of...
  • What is Optical Density?
    Article - 6 Aug 2014
    Optical density is a term used in the field of optical spectroscopy for describing the propagation of a wave through a material.
  • An Introduction to Attenuation
    Article - 30 Oct 2014
    Attenuation is defined as the gradual loss in the intensity of any kind of flux when it passes through a medium.
  • Gain Medium - Definition and Use in Laser Construction
    Article - 12 Feb 2014
    Gain medium is a quantum system that amplifies laser beams by means of stimulated emission.
  • 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...
  • What is a Light Emitting Capacitor (LEC)?
    Article - 5 Jul 2013
    Light emitting capacitor (LEC) is an electroluminescent device in which the active layer is a polymer which is capable of ionic conduction.
  • What is a Halogen Lamp?
    Article - 25 Apr 2014
    A halogen lamp is an incandescent light source consisting of a tungsten filament enclosed in an environment of an inert gas and a small amount of a halogen (bromine or iodine).
  • Helium Mercury Lasers – Properties and Applications
    Article - 15 May 2013
    Helium mercury laser falls into the category of metal-vapour lasers. It is similar in operation to the helium-neon or the Argon/Krypton lasers. It is also known as the ‘mercury vapour ion laser’ due...
  • What is Laser-Induced Breakdown Spectroscopy (LIBS)?
    Article - 9 Aug 2012
    This article gives an introduction to Laser Induced Breakdown Spectroscopy, a technique which is a key tool in the analytical arsenal of NASA's Curiosity rover on Mars.

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