Magnetic-field-induced rotation of light with orbital angular momentum

Shi, Shuai; Ding, Dong-Sheng; Zhou, Zhi-Yuan; Li, Yan; Zhang, Wei; Shi, Bao‐Sen

doi:10.1063/1.4923446

Cited by 32 publications

(7 citation statements)

References 22 publications

(26 reference statements)

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“…a light field that has a polarisation pattern that is varying across the beam profile. The interaction of vector beams with atoms is a relatively new concept [31,32], which has been used to explore spatial anisotropy [33][34][35][36][37], nonlinear effects [38][39][40][41] and quantum storage [42,43].…”

Section: Introductionmentioning

confidence: 99%

Visualization of magnetic fields with cylindrical vector beams in a warm atomic vapor

et al. 2021

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We propose and demonstrate an experimental implementation for the observation of magnetic fields from spatial features of absorption profiles in a warm atomic vapor. A radially polarized vector beam that traverses atomic vapor will generate an absorption pattern with a petal-like structure by the mediation of a transverse magnetic field (TMF). The spatial absorption pattern rotates when the azimuthal angle of the TMF is changed, while its contrast decreases when the longitudinal component of the magnetic field increases. By analyzing the intensity distribution of the transmitted pattern, we can determine the magnetic field strength. Our work provides a framework for investigating 3D magnetic field distributions based on atoms.

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Section: Introductionmentioning

confidence: 99%

Visualization of magnetic fields with cylindrical vector beams in a warm atomic vapor

et al. 2021

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“…As a result, they have been used for imaging nano particles, optical trapping [7], and quantum information [8,9]. Moreover, high-order vector vortex beams are highly sensitive to rotations, and this in turn can be used to measure tiny mechanical rotations and weak magnetic field [10].…”

Section: Introductionmentioning

confidence: 99%

Modulate the vector beams with magneto optic effect in atomic ensembles

Zhang

Yang

et al. 2020

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

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The ultimate challenge for shaping technology is how to control the light field with a single optical element in a high-speed manner, wherein the spatial distribution of amplitude, phase or polarization are manipulated. Here we describe the use of the magneto optic effect to achieve the rapidly shaping of vector beams in real time using atomic ensemble. Firstly, the Faraday-rotation effect of vector beams is shown. On this basis, dynamically modulate the polarization of a vector beams on each point is implemented, and the polarization state of the manipulated beam is characterized with spatially resolved Stokes parameters measurements. The response time of this manipulation is about 40 μs. The magnetic field high-speed switching and the dynamic manipulation capabilities of this method will be particularly useful for controlling light propagation through complex media and speed up the measurement of the properties of media.

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“…The physical mechanism of this frequency shift is theoretically studied in terms of time-evolving phase or the momentum and energy conservation [17][18][19][20][21]. Now the rotational Doppler effect has seen much development in transverse velocity measurement [22][23][24][25][26][27][28][29][30][31][32], nonlinear optics [33,34], optical sensor [35,36], metasurfaces [37][38][39], astrophysics [40] and so on [41][42][43][44].…”

Section: Introductionmentioning

confidence: 99%

The radial Doppler effect of optical vortex beams induced by a surface with radially moving periodic structure

Zhai

Zhang

et al. 2019

J. Opt.

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Recent studies have highlighted that the rotational Doppler effect arises from rotational motion and optical orbital angular momentum (OAM), which has potential to detect rotating objects. Here, we investigate the frequency shift when an OAM beam is scattered from a surface with a radially periodic structure moving in the radial direction. This kind of frequency shift is related to the radial velocity and the harmonic components of the radially periodic structure of the surface. We support our conclusion by means of calculating time-evolution phase of light beam theoretically and measuring the rotating interference patterns through coherent detection. Furthermore, a more general theoretical model for the complex frequency shift resulting from the concurrence of both the angular and radial Doppler effects, is proposed. The complex frequency shift characteristics are associated with harmonic components and the velocity of the structural surface in both radial and angular directions. Interestingly, the frequency shift resulting from the moving surface may be spatially variant, because of the combination of the angular and radial Doppler effects. This scheme is useful for analyzing the light-moving matter interaction. Meanwhile, it might be applicable to transverse velocity measurement and frequency modulation.

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Magnetic-field-induced rotation of light with orbital angular momentum

Cited by 32 publications

References 22 publications

Visualization of magnetic fields with cylindrical vector beams in a warm atomic vapor

Visualization of magnetic fields with cylindrical vector beams in a warm atomic vapor

Modulate the vector beams with magneto optic effect in atomic ensembles

The radial Doppler effect of optical vortex beams induced by a surface with radially moving periodic structure

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