Abstract
We demonstrate a compact laser platform that integrates stimulated and coherent Raman microscopy with high‐resolution nonlinear Raman spectroscopy. Ultrashort laser pulses with a carefully managed, broadly tunable chirp are shown to enable a comfortable switching between the high‐contrast microscopy and high‐resolution spectroscopy modalities in both stimulated and coherent versions of nonlinear Raman scattering. Sub‐10‐cm−1 spectral resolution in stimulated Raman spectroscopy is demonstrated through a careful compensation of nonlinear phase distortions of ultrashort laser pulses. This offers a powerful tool for a reliable identification of molecular vibrations with close frequencies, enhancing the chemical selectivity of spectroscopic analysis of complex multicomponent systems. Copyright © 2016 John Wiley & Sons, Ltd.
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