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Energy-level diagram showing the states involved in Raman spectra. Raman spectroscopy (/ ˈ r ɑː m ən /) (named after physicist C. V. Raman) is a spectroscopic technique typically used to determine vibrational modes of molecules, although rotational and other low-frequency modes of systems may also be observed. [1]
He was the joint founding editor of the Journal of Raman Spectroscopy (1973 onwards), later becoming editor-in-chief. His book, Raman Spectroscopy (1977), has achieved a considerable reputation and been translated into various languages. [1] A further book, The Raman Effect, was published in 2002. [3]
Raman spectroscopy is used to analyze a wide range of materials, including gases, liquids, and solids. Highly complex materials such as biological organisms and human tissue [26] can also be analyzed by Raman spectroscopy. For solid materials, Raman scattering is used as a tool to detect high-frequency phonon and magnon excitations.
C. V. Raman was born in Tiruchirappalli in the Madras Presidency of British India (now Tiruchirapalli, Tamil Nadu, India) to Tamil Iyer Brahmin parents, [5] [6] Chandrasekhar Ramanathan Iyer and Parvathi Ammal. [7]
Resonance hyper-Raman spectroscopy: Excitation of the sample occurs by two-photon absorption, rather than by absorption of a single photon. This arrangement allows for excitation of modes that are forbidden in ordinary resonance Raman spectroscopy, with intensity enhancement due to resonance, and also simplifies collection of scattered light ...
Coherent Raman scattering (CRS) microscopy is a multi-photon microscopy technique based on Raman-active vibrational modes of molecules. The two major techniques in CRS microscopy are stimulated Raman scattering (SRS) and coherent anti-Stokes Raman scattering (CARS). SRS and CARS were theoretically predicted and experimentally realized in the 1960s.
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