Overview of our range of CARS spectrometers

definition

CARS spectrometer use coherent anti-Stokes Raman spectroscopy (CARS), a nonlinear optical technique, to obtain information about the vibrational modes of molecules. These instruments use multiple laser beams to generate a coherent anti-Stokes signal, which is then analyzed to determine the composition and properties of the sample. spectrometer detailed spectroscopic investigations with high sensitivity.

Advantages 

CARS spectroscopy offers several advantages over spontaneous Raman spectroscopy. These include the higher signal intensity of the coherent anti-Stokes signal, which leads to faster measurement times and better detection of low concentrations. Furthermore, CARS allows the selective excitation of specific vibrational modes by choosing the laser frequencies. Furthermore, the CARS technique is applicable to various phases, including gases, liquids, and solids.

How a CARS spectrometer works

A CARS spectrometer Typically uses a pump, a Stokes, and optionally a probe laser beam. When the frequency difference between the pump and Stokes lasers matches the frequency of a Raman-active oscillation in the sample, the CARS signal is generated. This signal is at a higher frequency than the excitation beams, and a sensor detects and spectrally analyzes it to obtain information about the molecular composition and structure of the sample.

Areas of application 

CARS spectrometer are used in various scientific and industrial fields. Materials science uses them to study polymers and nanomaterials, combustion research to analyze reaction intermediates and flames, biomedical imaging for the non-invasive examination of tissues and cells, and chemical analysis for the identification and quantification of substances.

Selection criteria 

When selecting a suitable CARS spectrometer The specific requirements of your application are taken into account. These include the required spectral range, the desired spectral resolution, the detector sensitivity, the type of laser, and the complexity of the samples. The ability to achieve spatial resolution for imaging applications can also be a decisive factor. Our experienced team offers support in selecting the optimal CARS spectrometer for your research or analysis tasks.

Contact for further information

We are happy to provide detailed information on the individual systems and assist you in selecting the right instrument. Contact our experienced team for more information.