Question

Why rays are confined in one plane at the time of oblique incidence

Answer 1

Explanation:

➡️ Oblique incidence: Interface between dielectric media. Consider a planar interface between two dielectric media. A plane wave is incident at an angle from medium 1.

Answer 2

Answer:

Lau and Talbot-Lau grating interferometers produce wave interference effects from polychromatic, spatially incoherent sources and thus have wide ranging applications in molecular, atomic [1,2] and x-ray interferometry [3–6]. A Talbot-Lau interferometer consists of two planar gratings and a detector plane which are arranged in parallel (Fig. 1 ) [7–9]. These are the three principal planes of the interferometer. When certain symmetry conditions are met the interference patterns from different wavelengths and different incident angles are phase-locked at the detector plane, which enables interferometry with low coherence, polychromatic sources [1,2,8,10].