Experimental observation of spin-independent transverse shift of the centre of gravity of a reflected Laguerre–Gaussian light beam

Dasgupta, Ranjan; Gupta, Piyush Kumar

doi:10.1016/j.optcom.2005.07.033

Cited by 65 publications

(61 citation statements)

References 5 publications

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“…The experimental results obtained in [33] demonstrate striking agreement between calculated and experimental values of…”

Section: Spatial and Angular Shifts Incident To Refraction And Reflecsupporting

confidence: 66%

Coherent Light at the Interface Between Two Media

Кундикова

2016

Russ Phys J

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Reflection and refraction of coherent polarized radiation at the interface between two media are considered. It is shown that deviations from the well-known laws of geometrical optics are possible under certain conditions. The causes of such a deviation are considered.Keywords: Goos-Hänchen shift, optical Magnus effect, spin and orbital angular momenta, spin-orbit interaction of a photon, optical Hall effect.

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“…The experimental results obtained in [33] demonstrate striking agreement between calculated and experimental values of…”

Section: Spatial and Angular Shifts Incident To Refraction And Reflecsupporting

confidence: 66%

Coherent Light at the Interface Between Two Media

Кундикова

2016

Russ Phys J

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“…[10] and [11], which treat the partial reflection and transmission of a beam impinging on a refractive medium. It is shown that the reflected and transmitted beams are displaced a distance on the order of the wavelength out of the plane of incidence, an effect that has also been confirmed experimentally [12]. It corresponds to the Imbert-Fedorov shift of circularly polarized (SAM) beams [13,14], and also appears in the form of transverse motion during propagation in a gradient-index medium [15,16], thus calling for a modification of the geometrical optics (GO) equations [17][18][19].…”

Section: Introductionmentioning

confidence: 80%

“…(12)- (20)], it would be natural to use a Bessel-like beam with a rather large value of θ . For instance, θ = 30 • yields θ 2 ≈ 0.3, implying that the θ -dependent terms are of at least the same order of magnitude as the paraxial ones.…”

Section: Discussionmentioning

confidence: 99%

Transverse and lateral shifts of the center of gravity of a refracted nonparaxial Bessel beam

Nordblad

2012

Phys. Rev. A

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By applying geometrical optics (GO) to each plane-wave component of a nonparaxial electromagnetic (em) Bessel beam carrying spin and orbital angular momentum (SAM and OAM), we calculate the shift of the beam centroid during propagation in a weakly inhomogeneous, isotropic medium. Apart from recovering the transverse spin and orbital Hall shifts expected from paraxial theory, the nonparaxial treatment reveals additional shifts in both the transverse and lateral directions. When the propagation is close to perpendicular to the refractive index gradient, these shifts should be significant also for nearly paraxial beams. Suggestions are given for an experimental verification of the results.

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“…Furthermore, it has been pointed out that in partial reflection or refraction regime when a plane polarized optical beam carrying non-zero OAM, is incident on a refractive index interface a transverse displacement of the centre of gravities of the refracted and the reflected beams should occur with respect to the positions predicted by the geometrical optics [11]. The predicted shift is proportional to the OAM state of the beam, and the predicted shift for reflected Laguerre-Gaussian beams has been experimental observed [12]. The linear dependence of the shift on orbital quantum number of the beam can provide an attractive non-interferrometric method for measurement of OAM.…”

Section: Measurements Of Light Beam's Oammentioning

confidence: 99%

Optical orbital angular momentum for optical communication and its measurements

Liu

et al. 2009

SPIE Proceedings

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The beam with orbital angular momentum is a present domestic and foreign research key direction. Its application and development will bring the profound influence in the optical communications field. At the same time, light's orbital angular momentum promises potential applications in both classical and quantum optical communication. The research progress of the beam with orbital angular momentum and encoding information as light's OAM for free-space optical communication were reviewed in this article, the existing design method, mechanism and description methods of encoding information as light's OAM were discussed. In quantum communication, qudits can be encoded in photons using their OAM for creating high-dimensional entanglement based on entangled photon pairs from SPDC. In this paper, light's OAM is used as information carrier for classical and quantum communication, which is promising to ensures the security of atmospheric laser communication, improves the density and precision of information transmission. It is apparent that an efficient way to measure the orbital angular momentum of individual photons and light beams with good efficiency would be of potentially great importance for optical communications and quantum information. In view of the above, the measurements of orbital angular momentum of individual photons and light beams are analyzed and discussed in detail.

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Experimental observation of spin-independent transverse shift of the centre of gravity of a reflected Laguerre–Gaussian light beam

Cited by 65 publications

References 5 publications

Coherent Light at the Interface Between Two Media

Coherent Light at the Interface Between Two Media

Transverse and lateral shifts of the center of gravity of a refracted nonparaxial Bessel beam

Optical orbital angular momentum for optical communication and its measurements

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