Reference Interferometer Precautions
A typical reference interferometer is held at a stable length in a controlled environment, to reduce the dominant systematic errors which arise from changes in optical path which occur during the laser frequency scan.
Read more about this topic: Frequency Scanning Interferometry
Famous quotes containing the words reference and/or precautions:
“If we define a sign as an exact reference, it must include symbol because a symbol is an exact reference too. The difference seems to be that a sign is an exact reference to something definite and a symbol an exact reference to something indefinite.”
—William York Tindall (1903–1981)
“A multitude of little superfluous precautions engender here a population of deputies and sub-officials, each of whom acquits himself with an air of importance and a rigorous precision, which seemed to say, though everything is done with much silence, “Make way, I am one of the members of the grand machine of state.””
—Marquis De Custine (1790–1857)