Title :
Improved synthesised source for white light interferometry
Author :
Rao, Yun Jiang ; Jackson, D.A.
Author_Institution :
Phys. Lab., Kent Univ., Canterbury
fDate :
8/18/1994 12:00:00 AM
Abstract :
The authors present and demonstrate a novel method in which, by multiplying the autocorrelation functions of two low coherence sources, a synthesised source with a dominant central fringe is generated for use in white light interferometry. It is found that this method can further reduce the minimum signal to noise ratio required to identify the central fringe position, when compared with the summation method reported previously. This method offers a better synthesised source for white light interferometry
Keywords :
light coherence; light interferometry; optical correlation; autocorrelation functions; central fringe position; dominant central fringe; low coherence sources; signal to noise ratio; synthesised source; white light interferometry;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19940958
