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Related Experiment Videos

Quantum cascade surface-emitting photonic crystal laser.

Raffaele Colombelli1, Kartik Srinivasan, Mariano Troccoli

  • 1Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07974, USA. colombel@ief.u-psud.fr

Science (New York, N.Y.)
|November 1, 2003
PubMed
Summary

Researchers developed a novel surface-emitting quantum cascade laser using photonic and electronic band structure engineering. This miniaturized laser offers tunable emission for sensing and advanced optical studies.

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Area of Science:

  • Optics and Photonics
  • Semiconductor Physics
  • Materials Science

Background:

  • Quantum cascade lasers (QCLs) are crucial for mid-infrared applications.
  • Surface-emitting lasers offer advantages in miniaturization and beam steering.
  • Photonic crystals and surface plasmons enable novel optical functionalities.

Purpose of the Study:

  • To engineer a surface-emitting quantum cascade microcavity laser.
  • To integrate photonic and electronic band structure design.
  • To explore applications in sensing and nonlinear optics.

Main Methods:

  • Utilizing a high-index contrast two-dimensional photonic crystal for micro-resonator formation.
  • Employing a top metallic contact for electrical injection and optical confinement via surface plasmons.

Related Experiment Videos

  • Combining photonic band structure engineering with electronic band structure engineering.

    • Main Results:

    • Demonstrated a surface-emitting quantum cascade microcavity laser.
    • Achieved vertical light diffraction from the semiconductor surface.
    • Integrated electrical pumping with photonic crystal and surface plasmon functionalities.

    Conclusions:

    • The developed laser is miniaturized with tailorable emission properties, suitable for sensing.
    • Electrical pumping opens avenues for studying nonlinear and near-field optics in photonic crystal and plasmonic structures.
    • This work advances the integration of quantum cascade gain with advanced optical confinement and emission schemes.