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Updated: Apr 16, 2026

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging
Published on: April 28, 2022
Enhancement and extinction effects in surface-enhanced stimulated Raman spectroscopy
B X K Chng1, T van Dijk, R Bhargava
1Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405/N Mathews Ave, Urbana, IL 61801, USA. carney@illinois.edu.
Abstract:
We address the optical physics of surface-enhanced stimulated Raman spectroscopy (SESRS) from the microscopic to macroscopic scales to provide experimental design criteria in colloidal-suspension SESRS. The nanoparticles that provide local field enhancement also extinguish the Raman signal. We compute the total Raman signal detected from a suspension of Raman-active molecules and nanoparticles due to the cumulative effects of enhancement and extinction and find optimum operating parameters for pump frequency and nanoparticle concentration.
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