Figure 5
(a) Effect of slit width (s) on spatial coherence value (\(\mu\)) or visibility (V) of fringes of white LED source. Theoretical curve corresponds to A\(\left| \sin (\frac{\pi us}{\lambda L})/(\frac{\pi us}{\lambda L})\right|\) with experimental parameters u = 250 μm, \(\lambda\)= 440 nm, L = 32 cm and A = 0.83. (b) Schematic of double pass ultrathin interferometer. Inset: white LED interference fringes are shown.
