senterra 1

Presented spectrometer allows to conduct express and routine measurement of Raman spectra. The complex has the ability to measure liquids and solid samples: glassy, crystalline, organic and inorganic substances in the form of powders, thin films, and can work with microquantities of the substances. The complex has a system of optical imaging of the samples - Olympus. The spectrometer is equipped with three lasers with wavelengths of 488, 532, 785 nm, and fiber-optic sensor for registering the spectra of samples in an external sample compartment.


Main features

  • - Spectrometer is located on a platform of the confocal optical microscope and it has a class I protection from laser radiation.
  • - Spectral range of recording the Raman spectra of 80-4500 cm-1.
  • - Spectral resolution: better than 3 cm-1.
  • - Calibration wavelength: continuous, throughout the process of registration of the spectrum.
  • - Wavelength of the excitation laser (in parentheses the maximum power is shown): 532 nm (20mW), 785 nm (100 mW), 488 nm (40 mW).
  • - Detection: High-sensitive CCD detector with a Peltier-cooling to -70оС.
  • - 2 diffraction gratings – 400 grooves/mm and 1200 grooves/mm.
  • - Polarizer for measurements in polarized light.
  • - Fiber-optic sensor for recording the spectra of samples in an external sample compartment.

senterra 2

Characteristics of the confocal microscope with the visualization device

  • - Spatial resolution – 1 mm.
  • - The confocal optics with hybrid iris controled by computer.
  • - Aperture: combined slotted aperture for high luminosity and round aperture for confocal measurements.
  • - Confocal a resolution 2 microns.
  • - Color CCD camera to visualize the viewpoint, with a resolution 1.3 megapixel.
  • - Trinocular head for optical lenses with different degrees:
  •              - 20x (working distance – 1.3 mm),
  •              - 50x (working distance – 0.38 mm),
  •              - 4x, 10x, 50x (long-focus),
  •              - 100x (operating distance – 0.9 mm).
  • - Stage: an automated, controled with joystick and software, movement range – 75 mm x 50 mm, movement accuracy – 0.1 mkm.

senterra 3


Software features

The software kit for the spectrometer control allows to diagnosethe operating capacity of the optical system, the registration of spectra, measured data processing with special software packages:

  • - Identification with the optimization function of the spectrum.
  • - Implementation of univariate and multivariate analyzes.
  • - Conducting the routine analysis.
  • - Three-dimensional visualization of spectral data.
  • - Identification of the substance using the library search, the ability to build their own spectral libraries.
  • - The function of the spectrum intensity correction.
  • - Automatic fluorescence rejection of the laser with a wavelength of 785 nm.
  • - Library of the Raman scattering spectra.

Fields of application

Typical applications of Raman spectroscopy in materials science and nanotechnology.

  • - Materials for the study of any type of inorganic and organic materials, including semiconductor elements.
  • - In gemology, mineralogy for the study of gems, minerals.
  • - In organic chemistry for the study of reaction mechanisms of synthesis and characterization of the products.
  • - The development and control of various production processes.
  • - In criminology, Raman spectroscopy can be used to identify: 
  •              - paints, inks (car accident, identification of the figure),
  •              - polymer films, different fibers, shot, glasses,
  •              - explosives, drugs, toxic substances,
  •              - the composition of explosive mixtures of powders.
  • - In the pharmaceutical industry in the development and production control tablet forms of drugs and creams.
  • - Determination of lattice defects.
  • - The study of corrosion processes.

 Information on the manfacturer’s website