2020/10/12 by Supriya Nagpal, Nagpal, Supriya, Bryan Semon +3
Biochemistry, Genetics and Molecular Biology · Chemistry · Physics and Astronomy · #Applied Physics (physics.app-ph) #Atomic and Molecular Clusters (physics.atm-clus) #FOS: Physical sciences #Optics (physics.optics) #Protein Interaction Studies and Fluorescence Analysis #Spectroscopy Techniques in Biomedical and Chemical Research #Spectroscopy and Chemometric Analyses #Spectroscopy and Quantum Chemical Studies
paper · pdf · doi:10.48550/arxiv.2010.06017
openalex publication_date 2020/10/12 · openalex created_date 2022/07/25 · openalex updated_date 2026/07/28
Three-color coherent anti-Stokes Raman scattering represents non-degenerate\nfour wave mixing process that includes both a non-resonant and resonant\nprocesses, the contributions of which depend on how the molecular vibrational\nmodes are being excited by the input laser pulses. Non-degenerate four wave\nmixing processes are complex and understanding these processes requires\nrigorous data analytical tools, which still lack in this research field. In\nthis work, we introduce one- and two-dimensional intensity-intensity\ncorrelation functions in terms of a new variable (e.g., probe pulse delay) and\nnew perturbation parameter (e.g., probe pulse linewidth). In particular,\ndiagonal projections are defined here as a tool to reduce both synchronous and\nasynchronous two-dimensional correlation spectroscopy analyses down to\none-dimensional analysis, revealing valuable analytical information. Detailed\nanalyses using the all Gaussian coherent Raman scattering closed-form solutions\nand the representative experimental data for resonant and non-resonant\nprocesses are presented and compared. This intensity-intensity correlation\nanalytical tool holds a promising potential in resolving and visualizing\nresonant versus non-resonant four wave mixing processes for quantitative\nlabel-free species-specific nonlinear spectroscopy and microscopy.\n