Difference between revisions of "Raman microscope"
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=== Overview === | === Overview === | ||
The Raman microscope is an optical microscope through which an monochromatic laser source is directed at a sample. The sample absorbs energy and scatters the light at | The Confocal Raman microscope is an optical microscope through which an monochromatic laser source is directed at a sample. The sample absorbs energy and scatters the light at different wavelengths which is then read with a CCD camera. Raman is based inelastic scattering due to characteristic vibrational modes of the material being studied. | ||
[[Image:Raman energy levels.svg|thumb|300px|Energy level diagram showing the states involved in Raman signal. The line thickness is roughly proportional to the signal strength from the different transitions.]] | [[Image:Raman energy levels.svg|thumb|300px|Energy level diagram showing the states involved in Raman signal. The line thickness is roughly proportional to the signal strength from the different transitions.]] | ||
Revision as of 13:29, 15 June 2011
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Overview
The Confocal Raman microscope is an optical microscope through which an monochromatic laser source is directed at a sample. The sample absorbs energy and scatters the light at different wavelengths which is then read with a CCD camera. Raman is based inelastic scattering due to characteristic vibrational modes of the material being studied.
Significance
Micro Raman spectroscopy is a useful technique for determining the number of layers of small samples of graphene.