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15 June 2015 Modulation of Moiré pattern using birefringent sample
Jayeta Banerjee, Mahua Bera, Mina Ray
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Proceedings Volume 9654, International Conference on Optics and Photonics 2015; 96540K (2015) https://doi.org/10.1117/12.2181506
Event: International Conference on Optics and Photonics 2015, 2015, Kolkata, India
Abstract
Moiré pattern, produced by the overlapping of two radially sheared beams emerging from two longitudinally shifted focal points of a birefringent lens has been experimentally demonstrated. Coherent and incoherent Moiré patterns are generated with and without analyzer. Birefringent samples like mica sheets with opposite crystal axis to that of the birefringent lens modulate the Moiré pattern. Mica sheet of different thicknesses have been used to demonstrate the effect of thickness on phase retardation, hence on fringe pattern. Experimentally birefringence has been calculated by fringe analysis and compared with theoretically simulated birefringence.
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Jayeta Banerjee, Mahua Bera, and Mina Ray "Modulation of Moiré pattern using birefringent sample", Proc. SPIE 9654, International Conference on Optics and Photonics 2015, 96540K (15 June 2015); https://doi.org/10.1117/12.2181506
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KEYWORDS
Mica
Birefringence
Crystals
Polarization
Fringe analysis
Prisms
Modulation
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