Abstract

Vibrational Raman spectrum is useful for identification molecules without labeling. In previous study, we developed CARS spectroscopy in which Raman spectra were obtained with high frequency resolution by using a single broadband light source. In this spectroscopy, the probe beam was produced by an optical bandpass filter which has a limit of blocking range. This restricts bandwidth of light source and obtained Raman spectra. In this study, we use a combination of edge filters instead of a bandpass filter. By tilting the filters, we select bandwidth and intensity of the probe beam. Variable nature of spectral resolution and intensity are shown by using chloroform molecules as a test sample.

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