Second-harmonic generation in aluminum nitride microrings with 2500%/W conversion efficiency

By Xiang Guo, Chang-ling Zou, Hong X. Tang. 2016

188 citations recorded by the source corpus.

Photonic integrated circuits hold promise as miniaturized and scalable platforms for classical and quantum photonic information processing. Second-order nonlinearity (χ(2)) is the basis of many important applications such as second-harmonic generation, spontaneous parametric down-conversion, and optical parametric oscillation. Here, we present systematical investigation and optimization of the second-harmonic generation in a dual-resonant aluminum nitride microring resonator. By optimizing the quality factor, independently engineering the coupling conditions for dual-band operation, and perfectly fulfilling phase-match conditions through thermal tuning, we demonstrate a second-harmonic generation efficiency of 2500%  W−1 in the low-pump-power regime. To the best of our knowledge, this is a state-of-the-art value among all the integrated photonic platforms. We also study the high-power regime where the pump power depletion is non-negligible. A conversion efficiency of 12% is realized with 27 mW pump power. Our high-efficiency second-harmonic generator enables integrated frequency conversion and frequency locking between visible and infrared systems, and our approach can also apply to other photonic platforms.

Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/f9b51792225bc82964227f723803f7ab91387ec0

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In Atomic and Molecular Physics, and Optics

  1. Guoping Lin
  2. Aurelien Coillet
  3. Yanne K. Chembo

In Electrical and Electronic Engineering

  1. Aurelien Coillet
  2. Guoping Lin
  3. Yanne K. Chembo

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