Cited by 85Laser-Matter Interactions and ApplicationsOrbital Angular Momentum in OpticsMetamaterials and Metasurfaces Applications

Ultrafast optical imaging of the spin Hall effect of light in semiconductors

Ménard, Jean-Michel, Mattacchione, Adam E., van Driel, Henry M., Hautmann, Christine, Betz, Markus·2010·Physical Review B

Abstract

We experimentally demonstrate a general optical pump-probe technique to observe the spin Hall effect of light (SHEL) in an absorbing medium. In essence, a locally confined pump-induced modification of a material's absorptivity can effectively be used as an induced aperture allowing one to detect the transversely displaced circular polarization components of an incident beam through differential transmission techniques. We consider linear absorption mechanisms such as free-carrier absorption and Pauli blocking as well as nonlinear absorption processes such as two-photon absorption. For absorption mechanisms that do not depend on light polarization, the SHEL of the probe beam is obtained directly, while polarization-dependent properties give an effective SHEL displacement that depends on the action of the SHEL on both pump and probe beams. Using 150 fs pump, 820 nm pump and probe pulses we observe SHEL effects in silicon via free-carrier absorption. SHEL effects are also observed via Pauli blocking at 820 nm and two-photon absorption at 1550 nm in GaAs using $\ensuremath{\sim}150\text{ }\text{fs}$ pump and probe pulses.

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Crossref · 10.1103/physrevb.82.045303

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  • For nonparaxial beams, the simple association of SAM and IOAM with polarization and vortex is not valid; the SAM and IOAM become (3), and the total intrinsic AM is preserved, so part of the SAM is transferred to the IOAM (spin-to-orbital AM conversion).

    “For nonparaxial beams, consisting of circularly-polarized plane waves with the wavevectors forming a cone with an opening angle θ (like in Fig. B2b), the SAM and IOAM become 8,27,96- 98”

    From Spin–orbit interactions of light (2015) · cites this paper as [96]

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Authors
Ménard, J.-M., Mattacchione, A. E., van Driel, H. M., Hautmann, C., & Betz, M.
Affiliations
University of Toronto (CA)
Venue
Physical Review B
Published
2010-07-06
Volume
82
Issue
4
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
OpenAlex
W1993426268
Cited by
85
References
34
Citations by year
2026: 2 · 2025: 8 · 2024: 3 · 2023: 4 · 2022: 9 · 2021: 9 · 2020: 6 · 2019: 3 · 2018: 2 · 2017: 6 · 2016: 2 · 2015: 3 · 2014: 6 · 2013: 5 · 2012: 7
FWCI
3.77
Type
journal article
Language
en
Open access
closed
Locations
Physical Review B (publishedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Laser-Matter Interactions and Applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Orbital Angular Momentum in Optics
  • Physical Sciences › Materials Science › Electronic, Optical and Magnetic Materials › Metamaterials and Metasurfaces Applications
Keywords
spin Hall effect of light, optical pump-probe, free carrier absorption, Pauli blocking, two-photon absorption, circular polarization, lateral displacement, silicon, GaAs, absorbing media, differential transmission

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