Journal
OPTICA
Volume 3, Issue 10, Pages 1126-1131Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPTICA.3.001126
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Funding
- Defense Advanced Research Projects Agency (DARPA)
- David and Lucile Packard Foundation
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Photonic integrated circuits hold promise as miniaturized and scalable platforms for classical and quantum photonic information processing. Second-order nonlinearity (chi((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. (C) 2016 Optical Society of America
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