High-efficiency second-harmonic generation in doubly-resonant χ[superscript (2)] microring resonators
Author(s)Bi, Zhuan-Fang; Rodriguez, Alejandro W.; Hashemi, Hila; Duchesne, David; Loncar, Marko; Wang, Ke-Ming; Johnson, Steven G.; ... Show more Show less
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By directly simulating Maxwell’s equations via the finite-difference time-domain (FDTD) method, we numerically demonstrate the possibility of achieving high-efficiency second harmonic generation (SHG) in a structure consisting of a microscale doubly-resonant ring resonator side-coupled to two adjacent waveguides. We find that ≳ 94% conversion efficiency can be attained at telecom wavelengths, for incident powers in the milliwatts, and for reasonably large bandwidths (Q ~ 1000s). We demonstrate that in this high efficiency regime, the system also exhibits limit-cycle or bistable behavior for light incident above a threshold power. Our numerical results agree to within a few percent with the predictions of a simple but rigorous coupled-mode theory framework.
DepartmentMassachusetts Institute of Technology. Department of Mathematics; Massachusetts Institute of Technology. Department of Physics
Optical Society of America
Bi, Zhuan-Fang, Alejandro W. Rodriguez, Hila Hashemi, David Duchesne, Marko Loncar, Ke-Ming Wang, and Steven G. Johnson. “High-efficiency second-harmonic generation in doubly-resonant χ^(2) microring resonators.” Optics Express 20, no. 7 (March 19, 2012): 7526. © 2012 OSA
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