By subtracting the background from the full signal (and adding a constant level and multiplying by a factor of two) the a#39;correcteda#39; signal, as shown in Fig. 6 is obtained. ... can be determined. A straight line fit to these extrema positions and fringe order was made before and after the background ... The magnitude of this constant is a function of, among others, the illumination and observation directions.
|Title||:||Industrial Applications of Laser Technology|
|Author||:||William F. Fagan|