The Spectroscopy Net
Gateway to Spectroscopy > Spectrometers > Spectrometer Resolution > Signal to Background

Signal to Background

Signal to background ratio is reduced at constant resolution when the bandwidth is increased.

[signal to background ratio]

Spectral Interference or Peak Overlap

At high resolution, peaks can be well separated, eg As and Cd lines at 288.8 nm (0.005 nm resolution):

[high resolution]

But at low resolution, spectral processing is necessary to reduce spectral interference, eg As and Cd lines at 288.8 nm (low resolution):

[low resolution]

First published on the web: 15 May 2000.
Last modified: 13 April, 2007

Author: Geoff Tyler, Horiba Jobin-Yvon , France