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High-Fidelity Harmonic Generation in Optical Micro-Resonators Using BFGS Algorithm.

Özüm Emre Aşırım1, Alim Yolalmaz2, Mustafa Kuzuoğlu1

  • 1Department of Electrical and Electronics Engineering, Middle East Technical University, 06800 Ankara, Turkey.

Micromachines
|July 19, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed a new method for efficient harmonic generation in micro-resonators. This approach overcomes limitations in small-scale devices, enabling high-intensity harmonic generation for integrated photonics.

Keywords:
harmonic generationmicro-resonatornon-linear programmingnon-linear wave mixing

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Area of Science:

  • Nonlinear Optics
  • Quantum Optics
  • Photonics

Background:

  • Harmonic generation is crucial for various applications but is limited by low efficiency in micron-scale interaction lengths.
  • Achieving high nonlinear coupling and efficiency in microscale devices remains a significant challenge.

Purpose of the Study:

  • To present a novel constrained non-linear programming approach for high-fidelity harmonic generation in optical micro-resonators.
  • To overcome the limitations of micron-scale interaction lengths in achieving efficient harmonic generation.

Main Methods:

  • Utilized a constrained non-linear programming approach.
  • Employed the Quasi-Newton Broyden-Fletcher-Goldfarb-Shanno (BFGS) algorithm.
  • Investigated harmonic generation in a Fabry-Perot type optical micro-resonator.

Main Results:

  • Achieved high-intensity harmonic generation in a simple optical micro-resonator.
  • Demonstrated super-intense harmonic generation at ultraviolet (820 THz) and yellow-light (515 THz) frequencies.
  • Obtained over 98% accuracy compared to established theoretical models.

Conclusions:

  • The developed approach enables highly efficient microscale harmonic generators.
  • This method is suitable for designing components for integrated photonic devices.
  • The findings pave the way for advanced applications in nonlinear optics and photonics.