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  • Metastable States - Definition and Applications in Optics
    Article - 28 Feb 2014
    Metastable state is an excited state of an atom or other system with a longer lifetime than the other excited states. However, it has a shorter lifetime than the stable ground state.
  • Meniscus Lens and Their Application
    Article - 28 Feb 2014
    Meniscus lens is a lens having two spherical curved surfaces, convex on one side and concave on the other side. It is thicker at the center than at the edges. The lens provides a smaller beam diameter...
  • What is a Folded Resonator?
    Article - 28 Feb 2014
    A folded resonator is a type of resonator construction in which the interior optical path is bent with the help of mirrors.
  • What is Brewster's Angle?
    Article - 28 Feb 2014
    Brewster’s angle or polarizing angle is defined as an angle at which an incident beam of unpolarized light is reflected after complete polarization.
  • How are Ballast Resistors Used in Laser Applications?
    Article - 27 Feb 2014
    A ballast resistor is used for maintaining a constant current flowing through it, irrespective of the variations in the applied voltage or rest of the circuit. These resistors consist of a resistive...
  • Axicon Lenses and their Application
    Article - 27 Feb 2014
    The axicon lens is a specialized lens that bears a conical surface. The axicon lens images a point source as a line along the optic axis.
  • Aiming Beam and Coaxial Laser Beam
    Article - 27 Feb 2014
    An aiming beam is a laser beam (or any other light source) which is used as a light for guiding.
  • Beam Divergence
    Article - 27 Feb 2014
    Beam divergence of an electromagnetic beam is defined as a measure of increase in laser beam diameter or radius with respect to the distance from an antenna aperture or optical aperture through which...
  • 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.
  • What are Wave Optics?
    Article - 10 Feb 2014
    Wave optics, also referred to as physical optics, is the branch of optics that enables important phenomena such as interference, diffraction, and polarization to be understood.

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