A Young's interferometer has been used for spatial coherence measurements of the 23 mm diameter laser beam provided by a XeCl laser fitted with a super-Gaussian resonator of magnification factor M = 7. It has been found that the fringe visibility reduces from 0·8 to 0·1 by increasing the slit distance from 4 mm to 15 mm, the transverse coherence degree of the laser beam being determined by the geometric constraints imposed by the unstable resonator.
No takes yet. Share an insight, caveat, or question.
M. R. Perrone (1993) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: