Low phase noise THz generation from a fiber-referenced Kerr microresonator soliton comb

Author:

Kuse NaoyaORCID,Nishimoto Kenji,Tokizane Yu,Okada Shota,Navickaite Gabriele,Geiselmann Michael,Minoshima KaoruORCID,Yasui TakeshiORCID

Abstract

AbstractTHz 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).

Funder

MEXT | JST | Precursory Research for Embryonic Science and Technology

MEXT | Japan Society for the Promotion of Science

Cabinet Office, Government of Japan

Telecommunications Advancement Foundation

Ministry of Internal Affairs and Communications

Publisher

Springer Science and Business Media LLC

Subject

General Physics and Astronomy

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