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  • What is a Wavenumber?
    Article - 7 Feb 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...
  • What is Photothermal Spectroscopy?
    Article - 14 Feb 2023
    A type of optical analytic technique called photothermal spectroscopy is a powerful tool to study heat that is produced as a result of light absorption in a sample that has been exposed to radiation.
  • The Applications of Refraction
    Article - 20 Jan 2014
    Refraction is a phenomenon that happens when waves passing from one transparent medium to another bend at the boundary between the two mediums.
  • Acousto-Optical Effects - Principles and Applications
    Article - 26 Jun 2013
    Acousto-optics is a phenomenon which deals with the interaction of light (optics) and sound (acoustics). The existence of an interaction between light and sound was discovered by Brillouin in the year...
  • How Do Lasers Work?
    Article - 30 May 2012
    This article gives an overview of how lasers work and their basic operating principles.
  • What is Nonlinear Optics?
    Article - 3 Mar 2023
    Nonlinear optics is the branch of optics that studies the properties and the interaction of light in a medium where the polarization density interacts nonlinearly with the electric field of light.
  • 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.
  • Refraction and the Refractive Index
    Article - 30 Aug 2007
    When light passes from one medium to another of different density, its path of travel is bent. This phenomenon is known as refraction.
  • Nonlinear Optical Phenomena in Photonic Crystals
    Article - 19 Oct 2023
    For the study of such interactions leading to changes in the optical properties of photonic crystals, a high-intensity emitting medium such as high-energy lasers is required.
  • An Introduction to Optical Crystallography
    Article - 16 Oct 2019
    Optical crystallography, also known as crystal optics, is the branch of science that focuses on the optical properties of crystals.

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