- Instrument Overview
The LRS-5 Confocal Raman Spectrometer is a research-grade Raman testing instrument equipped with a 3D automated stage. Its true confocal optical path ensures the rapid and accurate acquisition of high-resolution spectral images. The LRS-5 features an optimized optical design to deliver industry-leading sensitivity, achieving diffraction-limited spatial resolution while maintaining high light throughput. Combined with a proprietary software operating system, the Raman testing process is made more convenient, efficient, and user-friendly.
- Product Features
ü True Confocal Imaging Capability
High spatial resolution, coupled with a 3D automated stage, enables point-by-point scanning of a sample’s points, lines, surfaces, and depth, yielding spatial distribution images of the sample’s chemical structure, composition, and physical properties.
ü Superior Performance
All optical components are optimally designed to ensure spatial and spectral resolution reach the diffraction limit. High spectral resolution captures detailed sample information—such as crystallinity integrity, polycrystalline vs. amorphous identification, stress effects, and size effects—making analysis simple and intuitive.
ü High Sensitivity
Capable of detecting silicon’s fourth-order peak.
ü Low Wavenumber Performance
Low-wavenumber performance enables detection of spectral ranges difficult to obtain with conventional spectrometers, thereby characterizing a wider range of sample features
ü High-Sensitivity Detector
Low-noise, high-sensitivity receiver delivers experimental results in a short time
ü Software-Controlled Automatic Variable Aperture
Automatic adjustment of confocal aperture
ü Powerful Software
Software system specifically designed for Raman spectroscopy, enabling not only standard spectral acquisition and analysis but also rapid automatic mapping scanning
Optional Raman database available for rapid identification and analysis
ü Flexible Configuration
Modular design: Customers can select different components and models to best meet their needs and achieve high cost-effectiveness
Multiple Lasers: Multiple excitation wavelengths are available, suitable for various samples and optimized experimental results
Multiple Grating: Multiple gratings are available
ü Functionality Expansion
Raman-AFM Coupling and TERS (Tip-Enhanced Raman Spectroscopy)
- Tianjin Gangdong Technology’s Raman Spectroscopy Milestones
1998 Gangdong Technology launched the LRS-2/3 laser Raman/ Fluorescence Spectrometer, designed for Raman and fluorescence spectroscopy measurements and teaching in physics and chemistry laboratories at higher education institutions
2008 Gangdong Technology launched China’s first micro-area laser Raman spectrometer
2009 Gangdong Technology’s micro-area laser Raman spectrometer passed the technical appraisal organized by the Tianjin Municipal Science and Technology Commission and received the Certificate of Scientific and Technological Achievement Appraisal issued by the Tianjin High-Tech Achievement Transformation Center
2010 Gangdong Technology launched China’s first confocal Raman spectrometer
2011 Gangdong Technology participated in the R&D work for the “National Major Scientific Instrument and Equipment Development Project—Research and Development of Laser Differential Confocal Scanning Imaging and Detection Instruments and Their Applications”
2016 The “Research and Development of Laser Differential Confocal Scanning Imaging and Detection Instruments and Their Applications” project successfully passed the expert panel acceptance review
- Comparison of Raman Spectroscopy and Infrared Spectroscopy
(1) Due to differences in spectral principles, the information provided by the two spectroscopic methods also varies. Certain highly symmetrical functional groups with very low polarity and weak infrared absorption exhibit strong spectral bands in Raman spectroscopy; for example, C-C, C=C, and S-S bonds are particularly suitable for Raman spectroscopic analysis. Infrared spectroscopy is only suitable for determining the side chains and terminal groups of polymers, whereas Raman spectroscopy is more commonly used to study the backbone structure of polymers. Raman spectroscopy and infrared spectroscopy are in a “complementary” relationship.
(2) In many cases, samples do not require pretreatment for Raman testing; samples of polymer materials in any form can be tested directly, and they can even be measured while housed in transparent containers, which is particularly convenient for analyzing liquid samples.
(3) Water exhibits very strong infrared absorption, whereas its Raman scattering is weak, with only a faint peak near 1640 cm⁻¹; therefore, Raman spectroscopy is particularly well-suited for the study of aqueous solutions.