Inauguration of DST FIST- Confocal Raman Spectrometer | Shiv Nadar University
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Inauguration of DST FIST- Confocal Raman Spectrometer

Research
03 Sep 2019

Prof. Rupamanjari Ghosh inaugurated DST FIST - Confocal Raman Spectrometer on 02/09/2019​ at Shiv Nadar University. 

Prof. Rupamanjari Ghosh inaugurated DST FIST - Confocal Raman Spectrometer on 02/09/2019​  at Shiv Nadar University.  This is a newly developed research facility added to the A Block in Physics department of Shiv Nadar University.

 

A brief description of Confocal Raman Spectrometer

 

Raman spectroscopy is a simple, fast, and non-destructive technique, which is extensively used in Physics, Chemistry, Material and Biological science to identify and/or quantify elements, atoms, molecules, matter, and molecular structure. In Raman spectroscopy, a sample is illuminated by monochromatic light (typically a laser beam) and a spectrometer is used to analyze the scattered light (approximately 1 out of 107 photons).  Raman scattering occurs when the system exchanges energy with the incoming photon and the system decays to vibrational energy levels above (anti-Stokes) or below (stokes) that of the initial state. The frequency shift corresponding to the energy difference between the incident and scattered photon is referred as Raman shift. Normally, Stokes lines are more intense than the anti-stokes lines and hence a Raman spectrometer detects only stokes lines. This event takes place in less than 10-14 seconds and a typical Raman spectrum is obtained by plotting the number of detected scattered photons as a function of Raman shift.

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