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Title: Widely separated optical Kerr parametric oscillation in AlN microrings

Here, we reportχ<#comment/>(3)-based optical parametric oscillation (OPO) with widely separated signal–idler frequencies from crystalline aluminum nitride microrings pumped at2µ<#comment/>m. By tailoring the width of the microring, OPO reaching toward the telecom and mid-infrared bands with a frequency separation of 64.2 THz is achieved. While dispersion engineering through changing the microring width is capable of shifting the OPO sideband by><#comment/>9THz, the OPO frequency can also be agilely tuned in the ranges of 1 and 0.1 THz, respectively, by shifting the pump wavelength and controlling the chip’s temperature. At high pump powers, the OPO sidebands further evolve into localized frequency comb lines. Such large-frequency-shift OPO with flexible wavelength tunability will lead to enhanced chip-scale light sources.

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Optics Letters
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Article No. 1124
0146-9592; OPLEDP
Optical Society of America
Sponsoring Org:
National Science Foundation
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