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Results 371 - 380 of 447 for Microscopy
  • Sum Frequency Generation - Non-Linear Optics for Advanced Spectroscopy
    Article - 8 Oct 2013
    Sum frequency generation (SFG) may be defined as a second order non-linear optical process in which a tunable infrared beam is combined with a visible beam, such that that the frequency of the output...
  • What is High Harmonic Generation?
    Article - 6 May 2014
    High harmonic generation may be described as an optical process of generating high harmonics of frequency from a fixed frequency laser light. For generation of high harmonics a high power laser source...
  • What is a Metal Halide Lamp?
    Article - 8 Oct 2013
    Metal halide lamps or metal halide arc lamps consist of a high performance arc discharge tube housed in an elliptical reflector that focuses the output into a microscopic optical train. The arc tube...
  • What is a Mercury Vapour Lamp?
    Article - 6 May 2014
    A mercury vapour lamp is a high-pressure electric arc discharge lamp that provides intense illumination over a selected range of wavelengths.
  • What is a Globar?
    Article - 21 Jun 2013
    Globar is a thermal light source that emits radiation near the infra red region of the electromagnetic spectrum.
  • What is an Optical Bandpass Filter?
    Article - 24 Jul 2013
    Optical bandpass filters are filters that allow only a certain bandwidth of light and block the others above and below the specified bandwidth.
  • What is an Absorptive Filter?
    Article - 25 Apr 2014
    Absorptive filters are essentially glass filters that are dyed or pigmented gelatin resins. Like any other filter, absorptive filters allow light of certain wavelengths to pass through. These are...
  • What is a Dichroic Filter?
    Article - 24 Jul 2013
    Dichroic filters are filters that optic filters that are placed at an angle of 45° to the light source, causing the light to travel in a different direction. Dichroic is a Greek word meaning...
  • Nano-Optics and Nano-Photonics - How Nanotechnology is Revolutionizing Optics and Photonics
    Article - 29 Dec 2007
    With a growing demand for faster, tinier, and more extremely integrated optical and electronic devices or instruments. There are also demands for smaller and exceptionally sensitive detectors for...
  • Optical Filters – What is an Optical Filter and What Does it Do?
    Article - 26 Dec 2007
    Filters are manufactured into a number of shapes and sizes. Filters can be used to pass or eliminate bands of wavelength ranging from hundreds of nanometers in size down to a single wavelength.

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