Low phase noise THz generation from a fiber-referenced Kerr microresonator soliton comb
Abstract
THz oscillators generated via frequency-multiplication of microwaves are facing difficulty in achieving low phase noise. Photonics-based techniques, in which optical two tones are translated to a THz wave through opto-electronic conversion, are promising if the relative phase noise between the two tones is well suppressed. Here, a THz ( 560 GHz) wave with a low phase noise is provided by a frequency-stabilized, dissipative Kerr microresonator soliton comb. The repetition frequency of the comb is stabilized to a long fiber in a two-wavelength delayed self-heterodyne interferometer, significantly reducing the phase noise of the THz wave. A measurement technique to characterize the phase noise of the THz wave beyond the limit of a frequency-multiplied microwave is also demonstrated, showing the superior phase noise of the THz wave to any other photonic THz oscillators (> 300 GHz).
Keywords
Cite
@article{arxiv.2204.02564,
title = {Low phase noise THz generation from a fiber-referenced Kerr microresonator soliton comb},
author = {Naoya Kuse and Kenji Nishimoto and Yu Tokizane and Shota Okada and Gabriele Navickaite and Michael Geiselmann and Kaoru Minoshima and Takeshi Yasui},
journal= {arXiv preprint arXiv:2204.02564},
year = {2022}
}