Spectroscopy Concepts

Our spectrometers are flexible systems that allow for a large number of configurations, which provides the optimization of the optical and spectroscopic performance for a specific application. In this section, we provide you with some useful information about how to choose the ideal optical components to achieve maximum performance and sensitivity on your spectrometer.

What is Spectroscopy?

The different forms of interaction between light and matter is the basis of spectroscopy. Find out more about spectroscopy and our spectroscopic setups.

Optical Resolution

A parameter measured as the full width at half maximum (FWHM) that depends on the diameter of the collection optical fiber, entrance slit width, diffraction grating groove density, and number of elements on the detector.


The sensitivity of a spectrometer is a measure of how the optical input (light that enters the spectrometer) relates to the spectral output (counts that are registered in the graphical display of the software).

Stray Light

Light unintentionally scattered within the spectrometer that reaches the wrong part of the detector, originating a false reading. Absorbance and transmittance values are affected by stray light percentage inside the spectrometer.

Digital Resolution

A parameter that is obtained from an analog to digital converter. This component is responsible for converting the voltage produced by the incident photons, in the detector pixels into a digital signal that is sent to and processed by the computer for graphical display.