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Updated: Jun 18, 2025

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems

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Published on: February 10, 2020

Surface Enhanced Nonlinear Raman Processes for Advanced Vibrational Probing.

Janina Kneipp¹, Katrin Kneipp¹

¹Humboldt-Universität zu Berlin, Department of Chemistry, Brook-Taylor-Str. 2, 12489 Berlin, Germany.

|August 1, 2024

Summary

This summary is machine-generated.

Surface enhanced Raman scattering (SERS) and nonlinear Raman techniques offer advanced vibrational characterization. These plasmon-enhanced methods reveal molecule-plasmon interactions for materials science and nanobiophotonics.

Keywords:

composite nanomaterials plasmon plasmon-molecule interaction surface enhanced Raman scattering (SERS)surface enhanced coherent anti-Stokes Raman scattering (SECARS)surface enhanced hyper Raman scattering (SEHRS)surface enhanced pumped anti-Stokes Raman scattering (SEPARS)surface enhanced stimulated Raman scattering (SESRS)

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Area of Science:

Plasmonics
Spectroscopy
Materials Science

Background:

Surface enhanced Raman scattering (SERS) utilizes localized surface plasmon resonances in metal nanostructures for enhanced vibrational probing.
High local fields generated by plasmon resonances also support nonlinear Raman scattering processes.

Purpose of the Study:

To discuss plasmon-enhanced spontaneous and coherent nonlinear Raman scattering techniques.
To identify advantages of these methods for advanced vibrational characterization of materials.

Main Methods:

Discussion of surface-enhanced hyper Raman scattering (SEHRS) for selective spectral information.
Analysis of surface-enhanced pumped anti-Stokes Raman scattering (SEPARS) for cross-section and transition insights.
Exploration of surface-enhanced coherent anti-Stokes Raman scattering (SECARS) and surface-enhanced stimulated Raman scattering (SESRS) for sensitivity and interaction studies.

Main Results:

SEHRS provides complementary spectral information to SERS.
SEPARS enables inference of nonresonant SERS cross sections and observation of "hot" vibrational transitions.
SECARS and SESRS combine high field enhancement with coherence for sensitive detection and exploration of molecule-plasmon interactions.

Conclusions:

Plasmon-enhanced nonlinear Raman scattering offers advanced vibrational characterization capabilities.
These techniques are valuable for studying molecule-plasmon interactions in composite and hybrid structures.
Applications span materials research, catalysis, and nanobiophotonics.