Spin Hall effect of reflected light from an air-glass interface around the Brewster’s angle

Kong, Ling‐Jun; Wang, Xiaohao; Li, Simin; Li, Yongnan; Chen, Jing; Gu, Bing; Wang, Hui-Tian

doi:10.1063/1.3687186

Cited by 87 publications

(32 citation statements)

References 20 publications

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“…On the other hand, supposing that the preselected state |H is incident near the Brewster angle, the operator exp(−ik yÂ δ H ) cannot be expanded as 1 − ik yÂ δ H due to the strong coupling [47][48][49][50]. Therefore, the weak value A w in Eq.…”

Section: Theoretical Modelmentioning

confidence: 92%

Modified weak measurements for the detection of the photonic spin Hall effect

Chen

Zhou

et al. 2015

Phys. Rev. A

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Weak measurement is an important technique for the detection of the tiny spin-dependent splitting in photonic spin Hall effect. The weak measurement is only valid when the probe wave function remains almost undisturbed during the procedure of measurements. However, it does not always satisfy such condition in some practical situations, such as in the strong-coupling regime or when the preselected and postselected states are nearly orthogonal. In this paper, we develop a modified weak measurement for the detection of the photonic spin Hall effect when the probe wave function is distorted. We find that the measuring procedure with preselected and postselected ensembles is still effective. This scheme is important for us to detect the photonic spin Hall effect in the case where neither weak nor strong measurements can detect the spin-dependent splitting. The modified theory is valid not only in the weak-coupling regime but also in the strong-coupling regime, and especially in the intermediate regime. The theoretical models of conventional weak measurements and modified weak measurements are established and compared. We show that the experimental results coincide well with the predictions of the modified theory.

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Section: Theoretical Modelmentioning

confidence: 92%

Modified weak measurements for the detection of the photonic spin Hall effect

Chen

Zhou

et al. 2015

Phys. Rev. A

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“…Many efforts have been devoted to pursuing large spatial spin splitting 9–11 . It was found that, the OPSS can be enhanced when a Gaussian beam is reflected by an air-glass interface near the Brewster angle 12, 13 . Götte and coworkers found the eigenpolarizations of the OPSS 14 .…”

Section: Introductionmentioning

confidence: 99%

The upper limit of the in-plane spin splitting of Gaussian beam reflected from a glass-air interface

Guan

et al. 2017

Sci Rep

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Optical spin splitting has a promising prospect in quantum information and precision metrology. Since it is typically small, many efforts have been devoted to its enhancement. However, the upper limit of optical spin splitting remains uninvestigated. Here, we investigate systematically the in-plane spin splitting of a Gaussian beam reflected from a glass-air interface and find that the spin splitting can be enhanced in three different incident angular ranges: around the Brewster angle, slightly smaller than and larger than the critical angle for total reflection. Within the first angular range, the reflected beam can undergo giant spin splitting but suffers from low energy reflectivity. In the second range, however, a large spin splitting and high energy reflectivity can be achieved simultaneously. The spin splitting becomes asymmetrical within the last angular range, and the displacement of one spin component can be up to half of incident beam waist w 0/2. Of all the incident angles, the spin splitting reaches its maximum at Brewster angle. This maximum splitting increases with the refractive index of the “glass” prism, eventually approaching an upper limit of w 0. These findings provide a deeper insight into the optical spin splitting phenomena and thereby facilitate the development of spin-based applications.

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“…Equation (9) will reduce to the expressions in previous works in special cases, for example, at partial reflection or neglecting the in-plane wave vector spread [11,14,28,31,32].…”

Section: Spin Separations In Shel For Reflectionmentioning

confidence: 97%

“…Although the L-LCP, R-LCP, L-RCP, and R-RCP have Gaussian profiles at an incident angle near θ B , the profiles of the total LCP (L-LCP+R-LCP) and RCP (L-RCP+R-RCP) components are severely distorted by the coherent superpositions, resulting in a large spin separation up to several microns. When the incident angle is far away from θ B , the SHEL shift is only a few tens of nanometers and the profiles are almost Gaussian [18,28,32].…”

Section: Spin Separations In Shel For Reflectionmentioning

confidence: 98%

“…The third term is induced by the in-plane wave vector spread and its percentage to the whole denominator can reach 85%. To take advantage of the large SHEL shifts near θ B [20,28,32], the in-plane wave vector spread should be taken into account. For the |S incident polarization, the in-plane wave vector spread has a negligible effect on the SHEL shift.…”

Section: Spin Separations In Shel For Reflectionmentioning

confidence: 99%

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Spin separations in the spin Hall effect of light

et al. 2015

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In the spin Hall effect of light (SHEL) with an incident linear polarization, the left circularly polarized (LCP) and the right circularly polarized (RCP) spin components are transversely shifted to opposite sides of the incident plane. We find that each spin component of the reflected or the refracted light is actually the coherent superposition of a pair with the same handedness. The two parts in a pair are generated by both the incident LCP and RCP components, respectively, and have different transverse shifts. Their weighted shifts lead to the overall displacement of the corresponding spin component. This perspective can successfully elucidate the dependence of the SHEL spin separations on the angle of polarization of the incident electric field.

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Spin Hall effect of reflected light from an air-glass interface around the Brewster’s angle

Cited by 87 publications

References 20 publications

Modified weak measurements for the detection of the photonic spin Hall effect

Modified weak measurements for the detection of the photonic spin Hall effect

The upper limit of the in-plane spin splitting of Gaussian beam reflected from a glass-air interface

Spin separations in the spin Hall effect of light

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