Cited by 753Orbital Angular Momentum in OpticsQuantum and Classical ElectrodynamicsMetamaterials and Metasurfaces Applications

Conservation of Angular Momentum, Transverse Shift, and Spin Hall Effect in Reflection and Refraction of an Electromagnetic Wave Packet

Open access
Bliokh, Konstantin Yu., Bliokh, Yury P.·2006·Physical Review Letters

Abstract

We present a solution to the problem of reflection and refraction of a polarized Gaussian beam on the interface between two transparent media. The transverse shifts of the beams' centers of gravity are calculated. They always satisfy the total angular momentum conservation law for beams, but, in general, do not satisfy the conservation laws for individual photons as a consequence of the lack of the "which path" information in a two-channel wave scattering. The field structure for the reflected and refracted beams is analyzed. In the scattering of a linearly polarized beam, photons of opposite helicities are accumulated at the opposite edges of the beam: this is the spin Hall effect for photons, which can be registered in the cross-polarized component of the scattered beam.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1103/physrevlett.96.073903

Cites

26 of 26 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The spin-Hall shift at an interface ensures the conservation of the z-component of the total angular momentum between the incident and reflected beams.

    “Namely, this shift ensures the conservation of the z -component of the total AM between the incident and reflected beams: S z = ′ S z + Lz ext ′”

    From Spin–orbit interactions of light (2015) · cites this paper as [15]

    The paper states that transverse shifts satisfy conservation of the z-component of total angular momentum for the beams (p. 3). But it does not generally equate the incident beam’s angular momentum with the reflected beam’s alone: reflection and refraction are two channels, and the separate conservation laws hold only in specified cases, including total internal reflection (pp. 2–3). (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • A circularly polarized laser beam reflected or refracted at a dielectric interface experiences a tiny transverse spin-dependent shift out of the plane of incidence.

    “(i) A circularly polarized laser beam reflected or refracted at a dielectric interface does not propagate in the original plane but experiences a tiny transverse spin-dependent shift out of this plane.”

    From Spin–orbit interactions of light (2015) · cites this paper as [15]

  • In the simplest case of total reflection from an interface, the reflected beam acquires a helicity-dependent shift (the Imbert-Fedorov shift).

    “In the simplest case of total reflection from the interface, the reflected beam acquires the helicity-dependent shift”

    From Spin–orbit interactions of light (2015) · cites this paper as [15]

  • Only recently, correct theoretical calculations and definitive measurements have elucidated the Imbert-Fedorov shift's nature as a SOI effect.

    “Only recently, correct theoretical calculations 15,72 and definitive measurements 16 have elucidated its nature as a SOI effect.”

    From Spin–orbit interactions of light (2015) · cites this paper as [15]

  • A number of experiments observed spin-orbit coupling and polarization transport of light in complex speckle fields of multimode optical fibers.

    “There had been a number of remarkable experiment [120 -123] which observed the spin-orbit coupling and polarization transport of light in complex speckle fields of multimode optical fibers (see also [24]),”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Bliokh, K. Y., & Bliokh, Y. P.
Affiliations
Bar-Ilan University (IL)
Venue
Physical Review Letters
Published
2006-02-23
Volume
96
Issue
7
Pages
073903-073903
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2026955211
Cited by
753
References
26
Citations by year
2026: 55 · 2025: 69 · 2024: 49 · 2023: 64 · 2022: 59 · 2021: 57 · 2020: 46 · 2019: 49 · 2018: 38 · 2017: 36 · 2016: 29 · 2015: 33 · 2014: 29 · 2013: 28 · 2012: 34
FWCI
9.03
Type
journal article
Language
en
Open access
Locations
  • Physical Review Letters (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Orbital Angular Momentum in Optics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum and Classical Electrodynamics
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
Keywords
angular momentum conservation, transverse shift, spin Hall effect, photon spin, reflection and refraction, photon helicity, which-path information, linearly polarized light

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review