Premium
A compact laser platform for nonlinear Raman microspectroscopy: multimodality through broad chirp tunability
Author(s) -
Lanin A. A.,
Stepanov E. A.,
Tikhonov R. A.,
SidorovBiryukov D. A.,
Fedotov A. B.,
Zheltikov A. M.
Publication year - 2016
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.4860
Subject(s) - raman spectroscopy , chirp , laser , raman scattering , coherent anti stokes raman spectroscopy , microscopy , optics , materials science , spectroscopy , resolution (logic) , optoelectronics , physics , computer science , quantum mechanics , artificial intelligence
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.