ラマン分光法のための装置および方法

Abstract

The present invention relates to an apparatus and method for Raman spectroscopy, and in particular to an apparatus and method for high-resolution Raman spectroscopy comprising a tunable monochromatic laser source that is spectrally modulated by a modulation signal for exciting a sample, and a lock-in device for improving the signal-to-noise ratio of a sample Raman signal occurring within the spectral filter width of a narrowband spectral filter element in an associated measurement signal. The device for Raman spectroscopy according to the present invention is mod1 The present invention relates to a spectrally tunable laser source (10) modulatable by a first modulation signal (S), a spectral filter element (20), a detector (30) for measuring the intensity of the excitation radiation (L1) of the laser source (10) scattered by the sample (P) and filtered by the spectral filter element (20), a means for tuning the laser source (50), and a first modulation signal (S mod1 ) as a reference signal to determine the spectral filter width Δν Filter The first modulating signal (S mod1 and a lock-in device (40) configured to filter the Raman signal (R) of the sample (P) modulated by the Raman filter (R) from the measurement signal (I).

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