The Voigt effect in a dilute atomic vapour

Schüller, F.; Macpherson, M.J.D.; Stacey, D. N.; Warrington, R. B.; Zetie, K. P.

doi:10.1016/0030-4018(91)90546-p

Cited by 15 publications

(7 citation statements)

References 2 publications

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“…In contrast to the Faraday case where the medium exhibits circular birefringence and dichroism, in the Voigt geometry the system is linearly dichroic and birefringent, which leads to a different form of magneto-optic rotation known as the Voigt effect [34][35][36]. Note that, as pointed out by Pershan [37], the Voigt effect is subtly different to the Cotton-Mouton effect [38,39], where birefringence emerges as a result of alignment of diamagnetic molecules in a transverse magnetic field.…”

Section: The Voigt Geometrymentioning

confidence: 99%

ElecSus: Extension to arbitrary geometry magneto-optics

Keaveney

Adams

Hughes

2018

Computer Physics Communications

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We present a major update to ElecSus, a computer program and underlying model to calculate the electric susceptibility of an alkali-metal atomic vapour. Knowledge of the electric susceptibility of a medium is essential to predict its absorptive and dispersive properties. In this version we implement several changes which significantly extend the range of applications of ElecSus, the most important of which is support for non-axial magnetic fields (i.e. fields which are not aligned with the light propagation axis). Suporting this change requires a much more general approach to light propagation in the system, which we have now implemented. We exemplify many of these new applications by comparing ElecSus to experimental data. In addition, we have developed a graphical user interface front-end which makes the program much more accessible, and have improved on several other minor areas of the program structure.

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Section: The Voigt Geometrymentioning

confidence: 99%

ElecSus: Extension to arbitrary geometry magneto-optics

Keaveney

Adams

Hughes

2018

Computer Physics Communications

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“…whether the light propagates along (Faraday effect) or transverse (Voigt effect) to the direction of the magnetic field [13]. The light propagation associated with Faraday (Voigt) effect is circular-birefringence and circular-dichroism (linear-birefringence and lineardichroism) [14,15,21,22].…”

Section: Liamentioning

confidence: 99%

“…It may be noted that the light field can either cooperate and thus reinforce the structure of the tensor χ( E) through a mere nonlinear dependence and the resulting magneto-optical effects are nonlinear generalizations at best (nonlinear magneto-optical effects [10,11]), or can compete with the magnetic field stimulus to redefine the susceptibility tensor completely. The competing light field tries to align the PCS along its propagation direction, such alignment causes complex evolution as light propagates [12] and changes conventional understanding, for example, the Voigt effect no longer results from linear-birefringence and linear-dichroism [13][14][15]. The closed-loop phase governs this competition or cooperation between the two in determining the optical susceptibility, and further allows us to classify all atomic systems in their anisotropic magneto-optical response.…”

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confidence: 99%

Beyond Quantum interference and Optical pumping: invoking a Closed-loop phase

Kani¹,

Wanare²

2016

Preprint

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Atomic coherence effects arising from coherent light-atom interaction are conventionally known to be governed by quantum interference and optical pumping mechanisms. However, anisotropic nonlinear response driven by optical field involves another fundamental effect arising from closedloop multiphoton transitions. This closed-loop phase dictates the tensorial structure of the nonlinear susceptibility as it governs the principal coordinate system in determining, whether the light field will either compete or cooperate with the external magnetic field stimulus. Such a treatment provides deeper understanding of all magneto-optical anisotropic response. The magneto-optical response in all atomic systems is classified using closed-loop phase. The role of quantum interference in obtaining electromagnetically induced transparency or electromagnetically induced absorption in multi-level systems is identified.

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“…The rotation of the plane of polarization of light by a medium in the presence of a magnetic field, generally called magneto-optical rotation (MOR), has been studied for a long time. The phenomenon arises due to the birefringence or dichroism of the medium induced by the magnetic field, and is known as the Faraday effect [1][2][3][4] when the applied magnetic field is longitudinal (causing circular birefringence) and the Voigt effect [5][6][7] when the field is transverse (causing linear dichroism). MOR has important applications [8] in diverse areas such as polarization control, Faraday optical isolators, magnetometry [9] and laser-frequency stabilization [10,11].…”

Section: Introductionmentioning

confidence: 99%

Coherent control of magneto-optic rotation

Pandey

Wasan²,

Natarajan

2008

J. Phys. B: At. Mol. Opt. Phys.

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We experimentally study the rotation of the plane of polarization of a laser beam passing through room-temperature Rb vapour. The rotation occurs because the medium behaves differently for the two orthogonally-polarized components, displaying what is known as circular birefringence or linear dichroism. The difference is induced either by a control laser applied to an auxiliary transition of a ladder-type system, or by an applied axial magnetic field. In the presence of both control laser and magnetic field, the line shape shows an interesting interplay between the two effects with regions of suppressed and enhanced rotation. The line shapes can be understood qualitatively based on a density-matrix analysis of the system.

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The Voigt effect in a dilute atomic vapour

Cited by 15 publications

References 2 publications

ElecSus: Extension to arbitrary geometry magneto-optics

ElecSus: Extension to arbitrary geometry magneto-optics

Beyond Quantum interference and Optical pumping: invoking a Closed-loop phase

Coherent control of magneto-optic rotation

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