Integrated frequency comb laser with narrow intrinsic optical linewidth based on a dielectric waveguide feedback circuit
Optics
2019-10-29 v1
Abstract
We present an integrated hybrid semiconductor-dielectric (InP-SiN) waveguide laser that generates frequency combs at a wavelength around 1.5 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.
Cite
@article{arxiv.1902.06544,
title = {Integrated frequency comb laser with narrow intrinsic optical linewidth based on a dielectric waveguide feedback circuit},
author = {Jesse Mak and Albert van Rees and Youwen Fan and Edwin J. Klein and Dimitri Geskus and Peter J. M. van der Slot and Klaus. -J. Boller},
journal= {arXiv preprint arXiv:1902.06544},
year = {2019}
}