Cross-correlation noise studies in atomic magnet-optic rotation spectroscopy

Analytical signals in an Atomic Magneto-Optic Rotation spectrometer are bur ied in noise at the limit of detection. The noisy analytical signals were a nalysed by carrying out mathematical correlation of their time domain wavef orms, The noise components of signals were removed by auto-correlation to s implify the study. If noise interferes in analytical signals whose source i s unclear, a cross-correlation of the output waveform with noise source may identify the source, e.g., mains frequencies and background radio signals. A cross-correlation will reveal whether the two signals are derived from t he same source. This can also lead to an improvement in the signal detectio n limit. Either of the two above situations can occur in studying analytica l signals. In this study, both auto-and cross-correlation studies were carr ied out on analytical signals which had discrete noise sources present in t heir waveforms.