Journal ArticleDOI
Robust one-beam interferometer with phase-delay control.
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TLDR
In this paper, a robust one-beam interferometer with external phase-delay control is described, where the two arms are together in one collimated beam, and an additional phase delay is introduced by application of an electrical current to the Faraday rotator or by rotation of the polarizer (the latter being of topological origin).Abstract:
A robust one-beam interferometer with external phase-delay control is described. The device resembles a Mach-Zehnder interferometer in which the two arms are together in one collimated beam. However, the proposed device is not an amplitude-division interferometer but a wave-front division one. The phase-delay control occurs at the interferometer output with the help of two polarizing beam splitters, a quarter-wave plate, a Faraday rotator, and a polarizer. An additional phase delay is introduced by application of an electrical current to the Faraday rotator or by rotation of the polarizer (the latter is of topological origin), which permits the use of techniques of phase-stepping interferometry.read more
Citations
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Journal ArticleDOI
Phase-shifting (Sagnac) interferometer with external phase control.
José A. Ferrari,Eugenio Garbusi +1 more
TL;DR: A novel ring configuration for phase-shifting interferometry with external phase-Shifting control is presented, in which the reference and test arms are parts of the same collimated beam.
Journal ArticleDOI
Visualization of phase objects using incoherent illumination
TL;DR: A method for visualization of phase objects using incoherent illumination, which is based on the image enhancement due to an illumination gradient, is presented, which has potential application for gas-leak detection in industrial environments.
Journal ArticleDOI
Retrieval of infinite-fringe mode information from a beam folding interferometer for direct phase visualization
TL;DR: In this article, a modification to the beam folding interferometer is described, where interferometric fringes are superimposed onto a grating to get both finite-and infinite-fringe mode information of the test object.
Journal ArticleDOI
Phase reconstruction from three interferograms based on integral of phase gradient
TL;DR: In this paper, a novel phase reconstruction algorithm based on the integral of phase gradient is presented, which directly derives two real-valued partial derivatives from three phase-shifted interferograms.
Journal ArticleDOI
Enhancing the phase profile and contrast of an interferogram by polarization recording in bacteriorhodopsin.
TL;DR: A novel interferometric setup in which the reference and test waves are circularly polarized orthogonally to each other, creating a polarization grating that is distorted by the phase of the test object.
References
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Journal ArticleDOI
Quantal phase factors accompanying adiabatic changes
TL;DR: In this article, it was shown that the Aharonov-Bohm effect can be interpreted as a geometrical phase factor and a general formula for γ(C) was derived in terms of the spectrum and eigen states of the Hamiltonian over a surface spanning C.
Journal ArticleDOI
Nonlinearity of Pancharatnam's topological phase.
TL;DR: This work presents a remarkable optical ``nonlinearity'' of certain polarizing interferometers, which is discovered by using the concept of the topological phase on the Poincar\'e sphere and is demonstrated with a simple experiment.
Journal ArticleDOI
Applications of a novel phase-shift method using a computer-controlled polarization mechanism
TL;DR: In this paper, a phase-shifting apparatus based on polarization techniques is developed, which changes phase only by rotating a polarizer using a precise step motor and a specially designed decelerator.
Journal ArticleDOI
Polarization-shifting method for step interferometry
TL;DR: In this article, a phase step interferometry system using polarization shifting is described, which is essentially a Mach-Zehnder interferometer in which the polarization of light travelling through one arm is orthogonal to the polarization travelling through the other arm.
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