Selecting an Excitation Wavelength for Raman Spectroscopy

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Spectroscopy E-Books

Spectroscopy E-BooksSpectroscopy E-Books-12-01-2016
Volume e4
Issue 2

Here, we examine the problem of photoluminescence from the material being analyzed and the substrate on which it is supported. We describe how to select an excitation wavelength that does not generate photoluminescence, reduces the noise level, and yields a Raman spectrum with a superior signal-to-noise ratio. Furthermore, we discuss the phenomenon of resonance Raman spectroscopy and the effect that laser excitation wavelength has on the Raman spectrum.

 

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John Burgener | Photo Credit: © Will Wetzel