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Related Experiment Video

Updated: Jun 18, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
12:57

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Published on: October 13, 2017

4-quasi-phase-matched interactions in GaAs microdisk cavities.

P S Kuo1, W Fang, G S Solomon

  • 1Physics Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA. pkuo@nist.gov

Optics Letters
|November 21, 2009
PubMed
Summary

Researchers demonstrate quasi-phase-matched nonlinear optical interactions in GaAs microdisks. This novel approach achieves efficient second-harmonic generation using resonant cavities, bypassing traditional domain inversion methods.

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Last Updated: Jun 18, 2026

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection
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Area of Science:

  • Nonlinear Optics
  • Materials Science
  • Optical Engineering

Background:

  • Quasi-phase matching (QPM) is crucial for efficient nonlinear optical frequency conversion.
  • Traditional QPM methods often require complex and precise external domain inversions.
  • Materials with 4 symmetry offer an alternative route to achieving QPM.

Purpose of the Study:

  • To explore quasi-phase-matched nonlinear interactions in materials with 4 symmetry.
  • To investigate the combination of 4 -QPM with resonant microcavities for enhanced efficiency.
  • To analyze the tuning behavior and efficiency of second-harmonic generation in a GaAs microdisk cavity.

Main Methods:

  • Utilized materials with 4 symmetry (e.g., GaAs) and curved propagation geometries for intrinsic QPM.
  • Integrated 4 -QPM with whispering-gallery-mode microdisk resonators.
  • Investigated second-harmonic generation (SHG) tuning characteristics in the GaAs microdisk cavity.

Main Results:

  • Demonstrated quasi-phase matching without external domain inversions by leveraging 4 symmetry and curved geometries.
  • Achieved resonant enhancement of nonlinear optical mixing by coupling interacting waves to the microcavity.
  • Estimated a 0.1% power-conversion efficiency for second-harmonic generation with milliwatt-level pumping, with minimal higher-order nonlinearities.

Conclusions:

  • 4 -QPM combined with resonant microcavities offers a promising pathway for efficient nonlinear optical devices.
  • GaAs microdisk cavities enable efficient second-harmonic generation with stringent but achievable tuning.
  • This approach minimizes higher-order nonlinear effects, paving the way for practical applications.