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Related Experiment Video

Updated: Feb 14, 2026

Author Spotlight: Tracking Electrochemistry on Single Nanoparticles with Surface-Enhanced Raman Scattering Spectroscopy and Microscopy

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Optimizing laser crater enhanced Raman scattering spectroscopy.

V N Lednev¹, P A Sdvizhenskii², M Ya Grishin³

¹Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russia; National University of Science and Technology MISIS, Moscow, Russia.

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy

|February 12, 2018

Summary

Laser crater enhanced Raman scattering (LCERS) improves signal intensity by increasing the sampling area within a laser-produced crater. Optimal LCERS performance depends on laser parameters and powder properties like particle size.

Keywords:

Laser crater Powder materials Raman spectroscopy Signal enhancement l-Aspartic acid

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Observation and Analysis of Blinking Surface-enhanced Raman Scattering

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Observation and Analysis of Blinking Surface-enhanced Raman Scattering

Observation and Analysis of Blinking Surface-enhanced Raman Scattering

Published on: January 11, 2018

Area of Science:

Analytical Chemistry
Spectroscopy
Materials Science

Background:

Raman scattering provides molecular vibrational information.
Laser crater enhanced Raman scattering (LCERS) aims to improve signal intensity.
Understanding factors influencing LCERS enhancement is crucial for its application.

Purpose of the Study:

To systematically investigate the LCERS technique.
To determine the influence of sampling strategy and powder properties on signal enhancement.
To optimize experimental parameters for improved LCERS performance.

Main Methods:

Utilized a nanosecond pulsed Nd:YAG laser (532 nm) for both crater production and Raman scattering.
Investigated l-aspartic acid powder.
Varied experimental parameters: lens-to-sample distance, wavelength (532 nm and 1064 nm), laser pulse energy, particle size, and powder compactness.

Main Results:

Increased sampling area within the laser crater is the primary factor for signal enhancement.
Combining 1064 nm and 532 nm wavelengths for crater ablation further improved the LCERS signal.
Smaller particle size and lower powder compactness yielded better LCERS results.

Conclusions:

LCERS technique effectiveness is significantly influenced by the sampling area created by laser ablation.
Optimizing laser parameters and considering powder material properties are essential for maximizing LCERS signal enhancement.
The study provides insights into optimizing LCERS for sensitive molecular analysis.