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Related Experiment Video

Updated: Jul 9, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
15:58

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Published on: December 3, 2013

16-microm infrared generation by difference-frequency mixing in diffusion-bonded-stacked GaAs.

D Zheng1, L A Gordon, Y S Wu

  • 1Ginzton Laboratory, Stanford University, Stanford, California 94305, USA.

Optics Letters
|December 19, 2007
PubMed
Summary
This summary is machine-generated.

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Researchers generated tunable infrared radiation using diffusion-bonded gallium arsenide (GaAs). This method achieved quasi-phase matching for efficient nonlinear optical frequency conversion.

Area of Science:

  • Nonlinear Optics
  • Materials Science
  • Quantum Electronics

Background:

  • Gallium arsenide (GaAs) is a semiconductor with notable nonlinear optical properties.
  • Efficient generation of tunable coherent radiation is crucial for various spectroscopic applications.
  • Quasi-phase matching (QPM) techniques are essential for enhancing nonlinear optical processes.

Purpose of the Study:

  • To generate tunable coherent radiation in the mid-infrared region.
  • To demonstrate third-order quasi-phase matching in diffusion-bonded stacked GaAs.
  • To assess the efficiency and phase-matching capabilities of the fabricated nonlinear optical device.

Main Methods:

  • Utilized difference-frequency mixing in a 6-mm long, 24-layer diffusion-bonded stacked GaAs sample.

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Last Updated: Jul 9, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
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Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing

Published on: December 3, 2013

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  • Employed alternately rotated layers to achieve third-order quasi-phase matching.
  • Measured the wavelength-tuning curve and conversion efficiency.

    • Main Results:

    • Successfully generated tunable coherent radiation with wavelengths ranging from 15.6 to 17.6 micrometers.
    • Achieved a maximum conversion efficiency of 0.7% (5% internal quantum efficiency) at 16.6 micrometers.
    • Demonstrated that the diffusion-bonding process maintained nonlinear optical phase matching over the entire interaction length.

    Conclusions:

    • Diffusion-bonded stacked GaAs is a viable material for generating tunable mid-infrared coherent radiation.
    • The third-order quasi-phase matching approach in this structure is effective for nonlinear optical frequency conversion.
    • The experimental results align well with theoretical predictions, validating the fabrication and performance.