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  • Coloring Metal Surfaces Using Picosecond Lasers
    Article - 3 Aug 2017
    The commercial viability of metal nanoparticles has been hampered due to current top-down coloring methods.
  • Reduced Graphene Oxide Optical Sensors Detect Ethanol in Water Solutions
    Article - 3 Apr 2017
    The use of optical fibres as sensors has garnered major attention in recent years, as they possess many benefits over traditional electronic-based sensors for a wide range of chemical and biological...
  • Optical Analysis of 3D Mechanical Motions
    Article - 31 Oct 2016
    The importance of precise experimental dynamic characterization of micro-devices like micro-electro-mechanical systems (MEMS) is ever increasing in research and development activities as well as in...
  • Optical Dispersion - Principle and Applications
    Article - 15 May 2014
    Dispersion is the process of describing the characteristics of light waves and their interaction with a medium so that the group and phase velocities of the light propagating the medium depend on the...
  • Pockels Cell - Definitions and Applications
    Article - 3 May 2014
    Pockels cell is an electro-optical device used for switching the direction of polarization of light beams. It is the primary component of various optical devices such as electro-optical modulators and...
  • Bragg Grating - Introduction and Applications
    Article - 29 May 2014
    Fiber Bragg Grating (FBG) is a type of Bragg reflector (distributed type) that is constructed as a short segment of optical fiber to reflect light of certain wavelength and transmit the rest.
  • Optical Pumping - Definition and Applications
    Article - 19 Jun 2014
    Optical pumping is a process in which light energy is used to excite electrons from a lower to higher energy level. It was first developed by Alfred Kastler in the early 1950s. It is primarily used to...
  • Neutral Density Filter - Definition and Properties
    Article - 18 Sep 2014
    A neutral density filter is a semi-transparent glass filter used in front of a camera lens to reduce or vary the intensity of incoming light without affecting the color rendition.
  • What is Brewster's Angle?
    Article - 1 Aug 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.
  • 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...

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