Journal
JOURNAL OF OPTICS
Volume 19, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2040-8986/aa8716
Keywords
weak measurements; spin-hall effect; beam shift; polarization
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Funding
- Dr D S Kothari Postdoctoral Fellowship, UGC, Government of India
- Science and Engineering Research Board (SERB)
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We propose and demonstrate the weak measurement scheme to simultaneously measure the amplified angular and spatial contributions to the Goos-Hanchen (GH) and Imbert-Fedorov (IF) shifts, due to transmission through a glass plate. We have studied two cases of post-selection using a polarizer in the first case and a quarter-wave plate (QWP)-polarizer combination in the second case. The two cases are analyzed theoretically using Jones calculus of polarization formalism and the results are verified experimentally. In the first case of post-selection, the projection of the polarizer at. +/-Delta away from the crossed position amplifies the angular GH and IF shifts, while in the second case of post-selection, the projection of QWP at +/-Delta and polarizer kept fixed measures the polarization ellipticity in the beam and thus amplifies the spatial shift along with the angular shift simultaneously, for Delta << 1.
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