Utilization Of Polarization-Induced Phase Difference For Complex Addition And Subtraction Of Amplitudes

Choudhury, Deepankar; Puntambekar, P.N.; Chakrabarty, Aritra

doi:10.1007/bf03549706

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Combination Of Fourier Transformations1

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1996

2013

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Cited by 2 publications

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“…Another part of the input beam from the laser, which is transmitted from the beam-splitter BS 1 and is reflected by the mirror M 3 , superposes with object bearing beams after transmitting through another beam-splitter BS 2 . To get a CFT hologram at the CCD plane, the phase differences between the beams are adjusted to 2φ using polarization-induced phase [6].…”

Section: Combination Of Fourier Transformationsmentioning

confidence: 99%

Twin image elimination in digital holography by combination of Fourier transformations

Choudhury

Lohar²

2013

J Opt

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We present a new technique for removing twin image in in-line digital Fourier holography using a combination of Fourier transformations. Instead of recording only a Fourier transform hologram of the object, we propose to record a combined Fourier transform hologram by simultaneously recording the hologram of the Fourier transform and the inverse Fourier transform of the object with suitable weighting coefficients. Twin image is eliminated by appropriate inverse combined Fourier transformation and proper choice of the weighting coefficients. An optical configuration is presented for recording combined Fourier transform holograms. Simulations demonstrate the feasibility of twin image elimination. The hologram reconstruction is sensitive to phase aberrations of the object, thereby opening a way for holographic phase sensing.

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Section: Combination Of Fourier Transformationsmentioning

confidence: 99%