Femtosecond Stimulated Raman Spectroscopy Using a Scanning Multichannel Technique

01 natural sciences 0104 chemical sciences
DOI: 10.1366/11-06457 Publication Date: 2012-01-31T07:10:20Z
ABSTRACT
A scanning multichannel technique (SMT) has been implemented in femtosecond stimulated Raman spectroscopy (FSRS). By combining several FSRS spectra detected at slightly different positions of the spectrograph via SMT, we have eliminated systematic noise patterns (“fixed pattern noise”) due to variation sensitivity and characteristics individual charge-coupled device (CCD) pixels. In nonresonant FSRS, solvent subtraction can effectively remove even without SMT. However, case resonant show that a similar procedure is ineffective removing Application SMT results averaged with improved signal-to-noise ratios approach shot-noise limit.
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