Raman Microspectrometer is a compact, easy to assemble and cost effective solution for your Raman Spectroscopy needs. Figure 1 shows the homebuilt Raman Microspectrometer system used in Newports Technology & Application Center (TAC). The setup is based on a 532 nm CW single frequency DPSS laser (see Excelsior CW Lasers, Spectra-Physics) as the light source. Lasers with longer wavelengths are more preferable in Raman experiments since some of the fluorescence signals can be avoided.
Using the above set up, we have performed experiments on several samples. In all of the experiments, the exposure time was less than 20 seconds. In some cases, like with cyclohexane, the measurement can actually be monitored in real time (the frame was updated every second and the result is satisfactory as shown in the figure below).
For detail please read Application Note 42 .