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Related Concept Videos

Standing Waves in a Cavity01:28

Standing Waves in a Cavity

A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:

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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Mid-infrared optical parametric oscillators based on uniform GaP waveguides.

Ivan Avrutsky1, Richard Soref, Walter Buchwald

  • 1Department of Electrical and Computer Engineering, Wayne State University, Detroit, Michigan 48202, USA. ivan.avrutsky@wayne.edu

Optics Express
|October 14, 2010
PubMed
Summary
This summary is machine-generated.

This study demonstrates chip-scale optical systems for nonlinear optics. Polarization-dependent mode dispersion in waveguides enables efficient parametric oscillations with significantly lower threshold power.

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Area of Science:

  • Integrated photonics
  • Nonlinear optics
  • Waveguide optics

Background:

  • Chip-scale optical systems offer compact, reliable, and low-power alternatives to bulk nonlinear crystals.
  • Guided modes in waveguides enhance nonlinear parametric interactions, offering new phase synchronism methods and reduced threshold power.

Purpose of the Study:

  • To theoretically investigate the use of polarization-dependent mode dispersion in guided wave structures.
  • To achieve nonlinear parametric oscillations from continuous wave sources in the mid-infrared spectrum.

Main Methods:

  • Theoretical investigation of an Al(2)O(3)/GaP/Al(2)O(3) waveguide system.
  • Utilizing polarization-dependent mode dispersion for phase synchronism.

Main Results:

  • Parametric oscillations generated at 3 µm to 5 µm from 1 µm to 2 µm input waves.
  • Achieved using GaP cores with dimensions of 0.14 µm to 0.30 µm.
  • Demonstrated a threshold power 320 times lower than traditional bulk crystals.

Conclusions:

  • Polarization-dependent mode dispersion in integrated waveguides is an effective method for achieving efficient nonlinear parametric oscillations.
  • This approach significantly reduces threshold power requirements for mid-infrared light generation.