Integrated frequency comb laser with narrow intrinsic optical linewidth based on a dielectric waveguide feedback circuit

Jesse Mak, Albert van Rees, Y. Fan, E.J. Klein, Dimitri Geskus, P.J.M. van der Slot, Klaus J. Boller

Research output: Working paper

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Abstract

We present an integrated hybrid semiconductor-dielectric (InP-Si 3 N 4 ) waveguide laser that generates frequency combs at a wavelength around 1.5 μ m with a record-low intrinsic optical linewidth of 34 kHz. This is achieved by extending the cavity photon lifetime using a low-loss dielectric waveguide circuit. In our experimental demonstration, the on-chip, effective optical path length of the laser cavity is extended to 6 cm. The resulting linewidth narrowing shows the high potential of on-chip, highly coherent frequency combs with direct electrical pumping, based on hybrid and heterogeneous integrated circuits making use of low-loss dielectric waveguides.
Original languageEnglish
PublisherarXiv.org
Publication statusPublished - 18 Feb 2019

Publication series

NameArxiv.org

Keywords

  • physics.optics

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