Observation of the Fresnel and Arago laws using the Mach-Zehnder interferometer
Experimental arrangement of the Mach-Zehnder interferometer needed to verify the first and second Fresnel and Arago laws using linear polarization. BE stands for beam expander, and are beam-splitters, , , and are polarizers, and are front-coated mirrors, and R and are observation planes. (Inset) The , , axes are shown. The angle between the polarizer and the -axis is shown as . is the direction of propagation of the beam.
(Color online) Interference fringes obtained for linearly polarized light verifying the first and second Fresnel and Arago laws. (a) Polarizers and produce light beams with the direction of polarization along the -axis. (b) and produce light beams with the same direction of polarization as that produced by polarizer . (c) Polarizers and produce orthogonally polarized light beams.
Experimental arrangement for verifying the third and fourth Fresnel and Arago laws. is a polarizer making a angle with the -axis.
(Color online) Interference fringes for linearly polarized light verifying the third and fourth Fresnel and Arago laws. (a) Polarizer inserted and removed, no recovery of fringes. (b) Introduction of made interference fringes appear. (c) The sharpness increases when polarizers and are present and producing light beams with the same direction of polarization.
Experimental arrangement of Mach-Zehnder interferometer for verifying the Fresnel-Arago laws using circular polarization. and are quarter wave plates with their optical axis with respect to the incident polarization of the light beam.
(Color online) Interference fringes for circularly polarized light. (a) Fringes appear for both light beams with right circular polarization. (b) Fringes vanish if one of the two beams is made left circularly polarized. (c) Fringes reappear (introducing and ) when the light beams are brought into the same plane of polarization (originally derived from the same polarized component). (d) Removing makes the fringes vanish.
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