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Related Experiment Video

Updated: May 24, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

Optically-pumped dilute nitride spin-VCSEL.

Kevin Schires1, Rihab Al Seyab, Antonio Hurtado

  • 1School of Computer Science and Electronic Engineering, University of Essex, Wivenhoe Park, CO4 3SQ, UK. krschi@essex.ac.uk

Optics Express
|March 16, 2012
PubMed
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We achieved room temperature optical spin-injection in a dilute nitride 1300 nm vertical-cavity surface-emitting laser (VCSEL). This breakthrough enables polarization control for spintronics and optical telecommunications.

Area of Science:

  • Semiconductor Physics
  • Optoelectronics
  • Spintronics

Background:

  • Dilute nitride lasers are crucial for optical telecommunications.
  • Controlling laser polarization is essential for advanced applications.
  • Previous methods for spin-injection were limited, especially at room temperature.

Purpose of the Study:

  • To demonstrate room temperature optical spin-injection in a 1300 nm VCSEL.
  • To develop a novel fiber-based experimental protocol for spin-injection studies.
  • To validate experimental findings with theoretical predictions.

Main Methods:

  • Continuous-wave optical pumping of a dilute nitride VCSEL.
  • A novel fiber-optic setup for precise polarization control and measurement.

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Related Experiment Videos

Last Updated: May 24, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
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Published on: February 4, 2017

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  • Comparison of experimental results with the spin flip model.

    • Main Results:

    • Successful optical spin-injection achieved at room temperature.
    • VCSEL polarization directly controlled by pump polarization.
    • Experimental data shows excellent agreement with the spin flip model.

    Conclusions:

    • Room temperature polarization control of 1300 nm VCSELs is feasible.
    • This work paves the way for novel spintronic devices and enhanced optical networks.
    • The developed protocol offers a new avenue for investigating optical spin-injection.