Cited by 62Semiconductor Quantum Structures and DevicesPhotorefractive and Nonlinear OpticsSemiconductor materials and interfaces

Quantum interference control of currents in CdSe with a single optical beam

Laman, N., Shkrebtii, A. I., Sipe, J. E., van Driel, H. M.·1999·Applied Physics Letters

Abstract

We show that ballistic current generation can occur in a semiconductor via quantum interference between absorption pathways for orthogonal polarization components of a single-frequency beam. This effect occurs for a subset of noncentrosymmetric materials, is macroscopically associated with a second-order nonlinear optical susceptibility, and produces current injection linearly proportional to the beam intensity. We demonstrate this in wurtzite CdSe (Eg=1.75 eV) at 295 K using cw and femtosecond optical sources of wavelength 600–750 nm (2.07–1.66 eV). The intensity and spectral dependence are in reasonable agreement with a first-principles calculation. Continuous current density of 30 μA cm−2 is produced for 60 mW cm−2 intensity at 633 nm.

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Crossref · 10.1063/1.125084

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12 of 12 references verified0 citation errors · 0 not checkable

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  • Injection currents involve asymmetric carrier excitation in k-space with a net group velocity, due to helicity-dependent quantum interference between different polarization components of a circularly polarized excitation beam.

    “Injection currents, on the other hand, involve asymmetric carrier excitation in -space with a net group velocity, due to helicity-dependent quantum interference between different polarization components of a circularly polarized excitation beam42,43.”

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Authors
Laman, N., Shkrebtii, A. I., Sipe, J. E., & van Driel, H. M.
Affiliations
  • University of Toronto (CA)
  • Department of Physics, University of Toronto, Toronto, Canada M5S 1A7
Venue
Applied Physics Letters
Published
1999-10-25
Volume
75
Issue
17
Pages
2581-2583
ISSN
  • 0003-6951 (ISSN-L)
  • 1077-3118
OpenAlex
W2038027819
Cited by
62
References
12
Citations by year
2026: 3 · 2025: 3 · 2024: 1 · 2023: 3 · 2021: 4 · 2020: 1 · 2019: 4 · 2018: 2 · 2016: 1 · 2015: 2 · 2014: 2 · 2012: 1
FWCI
1.57
Type
journal article
Language
en
Open access
closed
Locations
Applied Physics Letters (publishedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor Quantum Structures and Devices
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photorefractive and Nonlinear Optics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor materials and interfaces
Keywords
quantum interference, CdSe, second-order nonlinear susceptibility, polarization-dependent absorption, femtosecond laser excitation, current injection, wurtzite semiconductors

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