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  • An Introduction to Light Amplification
    Article - 26 Feb 2014
    Light amplification is a process of intensifying the amplitude of an electromagnetic light wave. This process is generally classified into three major categories: laser, parametric and scattering.
  • Waveguide - Definition and Applications
    Article - 7 Feb 2014
    Waveguide is an optical structure which directs the electromagnetic waves of an optical spectrum. Some of the common types of waveguides include rectangular waveguides and optical fibers.
  • Speckle Pattern - Introduction and Applications
    Article - 4 Feb 2014
    Speckle pattern is a random granular pattern produced by the reflection of coherent light beam e.g. laser, at a rough surface such as a metallic surface, a display screen, white paint or a piece of...
  • Sagnac Interferometer - Definition and Applications
    Article - 4 Feb 2014
    The Sagnac interferometer uses counter-propagating beams in a ring path. This is realized by either using multiple mirrors or with an optical fiber. Generally, three or more mirrors are used, so that...
  • What is Optical Resolution?
    Article - 21 Jan 2014
    Optical resolution is the physical resolution at which an imaging device can capture an image.
  • Optical Coherence - Definition and Applications
    Article - 8 Jan 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 - 3 Jan 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.
  • ant Critical Angle - Definition and Applications
    Article - 27 Dec 2013
    Critical angle in optics refers to the angle of incidence beyond which total internal reflection of light occurs.
  • What is Optical Parametric Amplification (OPA)?
    Article - 26 Jun 2013
    Optical parametric amplification (OPA) may be described as a process of amplifying an input signal in the presence of a higher-frequency pump wave. Apart from signal amplification, an idler wave is...
  • What is Four-Wave Mixing?
    Article - 26 Jun 2013
    Four-wave mixing (FWM) is a non-linear optical process where two other waves are produced by the interaction of two wavelengths. Four-wave mixing can take place in any kind of material.

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