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Raman Amplifiers
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Raman amplifiers are optical amplifiers that function by tracking Raman scattering. When light is transmitted through matter, part of the light is scattered in random directions. A small part of the scattered light has frequencies removed from the frequency of the incident beam by quantities equal to vibration frequencies of the material scattering system. This small part is called Raman scattering. If the initial beam is sufficiently intense and monochromatic, a threshold can be reached beyond which light at the Raman frequencies is amplified, builds up strongly, and generally exhibits the characteristics of stimulated emission. This is called the stimulated or coherent Raman effect. Products & Services
Fiber optic amplifiers re-amplify an attenuated signal without converting the signal into electrical form.
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Raman spectrometers are used to measure the wavelength and intensity of inelastically scattered light from molecules. They can determine the chemical composition of a sample based on its wavelength and intensity.
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Depolarizers obliterate the polarization of a polarized beam by reflecting the beam in all directions at right angles to its axis.
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Fiber optic probes collect light or spectra from extreme environments inside reaction vessels at high temperatures or pressures. Product types include UV-Vis spectroscopy probes, Raman spectroscopy probes, and refractometry probes.
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Spectrometers are analytical instruments which disperse an emission (such as particles or radiation) according to some property of the emission (such as mass or energy) in order to measure the amount of the dispersion. This product area includes Portable / Miniature, visible, infrared (IR), ultraviolet (UV), atomic absorption (AA), optical emission (OE), Raman, X-ray fluorescence (XRF) and mass spectrometers. Specific search forms are also available.
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Topics of Interest
11.1 Raman, Brillouin, Rayleigh, and Mie Scattering
As early as 1923, Einstein generalized the notion of stimulated and spontaneous emission to a new kind of light scattering process, in which the...
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4.4.2 Optical Amplifiers and Regenerators
4.4.2.1 Amplifiers
In Chapter 2 (Section 2.17), we described the physics and technology of optical amplification. Amplification is required to overcome signal...
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3.2 Fourier Transform Near-Infrared Raman Spectroscopy
3.2.1 Theory
Raman spectroscopy is an emission technique which involves irradiating a sample with a laser and collecting the scattered...
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The turbidity, ?, expressed in m ?1, is a measure of the total intensity of light, I, scattered in all directions from an incoming beam of intensity I o. A typical data table and the mathematical...
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When light intercepts an obstacle it will be scattered, and measurement of the amplitude and polarization properties of the scattered light at various angles relative to the incident beam can provide...
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