A new weak light detection technique: reduction of scattered light and ghosts in a Raman spectrum by a frequency discriminating optical chopper.
A new technique is described which reduces unwanted scattered light and ghosts in Raman spectra. For a perfectly constructed system, the Rayleigh component will be zero, and only the Raman spectra will be detected. This method is far superior to the conventional lock-in, electron counting, and noise power Raman detection techniques.
Alfano
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