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Updated: Feb 7, 2026

A Novel Technique for Raman Analysis of Highly Radioactive Samples Using Any Standard Micro-Raman Spectrometer
Published on: April 12, 2017
A hyphenated echelle LIBS-Raman system for multi-purpose applications.
K M Muhammed Shameem1, V S Dhanada1, V K Unnikrishnan1
1Centre for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal 576 104, India.
A new hybrid laser-induced breakdown spectroscopy (LIBS) and Raman spectroscopy system was developed. This novel system provides fast, reliable elemental and molecular analysis of materials using a single pulsed laser and echelle spectrograph.
Area of Science:
- Analytical Chemistry
- Spectroscopy
- Materials Science
Background:
- Laser-induced breakdown spectroscopy (LIBS) and Raman spectroscopy are complementary elemental and molecular analysis techniques.
- Combining LIBS and Raman presents instrumental challenges due to differing spectral and resolution requirements.
Purpose of the Study:
- To develop and standardize a novel hybrid LIBS-Raman system.
- To demonstrate the feasibility of a portable, multi-purpose spectroscopy system using an echelle spectrograph.
Main Methods:
- A hybrid system was developed using a single pulsed Nd:YAG laser (532 nm) and a high-resolution echelle spectrograph.
- Atomic and molecular emissions were recorded in gated mode.
- Instrumental parameters were optimized using CaCO₃.
Main Results:
- The echelle spectrograph enabled simultaneous broad spectral coverage (250-900 nm) and high resolution.
- The hyphenated system achieved fast, reliable analysis with combined atomic and molecular spectra from the same sample spot.
- Single-shot LIBS-Raman measurement capabilities were demonstrated.
Conclusions:
- A novel, portable hybrid LIBS-Raman system utilizing an echelle spectrograph is effective for multi-purpose spectroscopy.
- This system offers reliable, simultaneous elemental and molecular analysis of materials.
- The developed system overcomes challenges in combining LIBS and Raman spectroscopy.
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