Figure 3
(a)–(d) Comparison of experimental and simulated interference fringes for a He–Ne laser, and (e)–(h) for white LED. The central maximum and minimum correspond to bright and dark central fringe. (i) Experimental intensity at cross-hair position along with a theoretical fit (Eq. 5) with \(I_0\)=1. Inset: experimental He–Ne laser intensity for larger angular range from \(-60^\circ\) to \(60^\circ\). (j) Simulated intensity and experimental intensity corresponding to (i) when calibrated in terms of optical path delay from -3 \(\mu\)m to 3 \(\mu\)m range. Inset: He–Ne laser intensity over a larger delay range from \(-30~\mu m\) to \(30~\mu m\).
