Technology

The Spectrolaser is an elemental analysis instrument based on a technique called LIBS ( Laser Induced Breakdown Spectroscopy). It incorporates a high-power laser that induces a bright spark (or plasma) at the surface of the material being analysed, the light from which is subsequently analysed by a unique spectrometer and detection system. The elemental fluorescence is directly related to the concentration of the element in the material being analysed. Superior analytical features are apparent when the Spectrolaser performance is compared to other technologies capable of elemental analysis. In particular, it is sensitive to a wide range of elements present in materials in addition to key low atomic number elements - such as hydrogen and carbon - which are not detected by alternative techniques. The low sample preparation required for analysis enables a high throughput of samples thereby significantly lowering analysis costs. Analysis times have been reduced to approximately 20 seconds for simultaneous determination of the concentration levels of all the detectable elements, which compares favorably to alternative elemental analysis technologies.

The Spectrolaser utilises a rapid simultaneous elemental analysis system, which is the subject of a recent patent application. In brief, the instrument incorporates a unique parallel processing design comprising multiple spectrographs and CCD detectors. Each spectrograph is preset to wavelength ranges that encompass the regions of richest elemental fluorescence. By using multiple spectrographs the device achieves wide spectral coverage while maintaining the resolution required to observe the elemental fluorescence with minimal interference. Parallel A/D circuitry ensures the spectral range from each spectrograph is recorded simultaneously in a single laser pulse. Since each grating is fixed, the wavelength calibration remains constant over long periods and the design is sufficiently rugged to be used reliably in field applications.

Laser Analysis Technologies is proving laser induced breakdown spectroscopy has a major role to play in modern elemental analysis and we are continuing to break new ground in new applications every day.

Indicative Detection Limits (Click here to download in PDF format.)
Note: Detection limits will vary greatly depending on matrix and material type.