2020
DOI: 10.48550/arxiv.2012.07533
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High-purity microwave generation using a dual-frequency hybrid integrated semiconductor-dielectric waveguide laser

Jesse Mak,
Albert van Rees,
Rob E. M. Lammerink
et al.

Abstract: We present an integrated semiconductor-dielectric hybrid dual-frequency laser operating in the 1.5 𝜇m wavelength range for microwave and terahertz (THz) generation. Generating a microwave beat frequency near 11 GHz, we observe a record-narrow intrinsic linewidth as low as about 2 kHz. This is realized by hybrid integration of a single diode amplifier based on indium phosphide (InP) with a long, low-loss silicon nitride (Si 3 N 4 ) feedback circuit to extend the cavity photon lifetime, resulting in a cavity op… Show more

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