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Self-Injection Locking and Phase-Locked States in Microresonator-Based Optical Frequency Combs

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TLDR
In this article, the transition of microcombs into phase-locked states, which show characteristics of injection locking between ensembles of comb modes, has been investigated and the existence of equidistant optical frequency combs that are phase stable but have nondeterministic phase relationships between individual comb modes.
Abstract
Microresonator-based optical frequency combs have been a topic of extensive research during the last few years. Several theoretical models for the comb generation have been proposed; however, they do not comprehensively address experimental results that show a variety of independent comb generation mechanisms. Here, we present frequency-domain experiments that illuminate the transition of microcombs into phase-locked states, which show characteristics of injection locking between ensembles of comb modes. In addition, we demonstrate the existence of equidistant optical frequency combs that are phase stable but have nondeterministic phase relationships between individual comb modes.

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Journal ArticleDOI

Dissipative Kerr Solitons in Optical Microresonators

TL;DR: The development of microresonator-generated frequency combs is reviewed to map out how understanding and control of their generation is providing a new basis for precision technology and establish a nascent research field at the interface of soliton physics, frequency metrology, and integrated photonics.
Posted Content

Dissipative Kerr solitons in optical microresonators

TL;DR: In this article, the discovery and stable generation of temporal dissipative Kerr solitons in continuous-wave (CW) laser driven optical microresonators is described and analytical and numerical descriptions are presented that do not only reproduce qualitative features but can also be used to accurately model and predict the characteristics of experimental systems.
Journal ArticleDOI

Photonic chip–based optical frequency comb using soliton Cherenkov radiation

TL;DR: Using a continuous wave–pumped, dispersion-engineered, integrated silicon nitride microresonator, the device offers the opportunity to develop compact on-chip frequency combs for frequency metrology or spectroscopy.
Journal ArticleDOI

Mode-locked dark pulse Kerr combs in normal-dispersion microresonators

TL;DR: In this article, dark pulse combs are formed in normal-dispersion microresonators with mode-interaction-assisted excitation, increasing freedom in micro-resonator design and potentially extending Kerr comb generation into the visible wavelength regime.
References
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Journal ArticleDOI

Optical frequency comb generation from a monolithic microresonator

TL;DR: This work reports a substantially different approach to comb generation, in which equally spaced frequency markers are produced by the interaction between a continuous-wave pump laser of a known frequency with the modes of a monolithic ultra-high-Q microresonator via the Kerr nonlinearity.
Journal ArticleDOI

A Study of Locking Phenomena in Oscillators

R. Adler
TL;DR: In this paper, a differential equation is derived which gives the oscillator phase as a function of time, and with the aid of this equation, the transient process of "pull-in" as well as the production of distorted beat note are described in detail.
Journal ArticleDOI

Microresonator-Based Optical Frequency Combs

TL;DR: A new optical frequency comb generation principle has emerged that uses parametric frequency conversion in high resonance quality factor (Q) microresonators, permitting an increased number of comb applications, such as in astronomy, microwave photonics, or telecommunications.
Journal ArticleDOI

Temporal solitons in optical microresonators

TL;DR: In this article, temporal dissipative solitons are observed in a nonlinear, high-finesse, optical microresonator driven by a continuous-wave laser, enabling ultrashort pulses to be generated in spectral regimes lacking broadband laser gain media and saturable absorbers.
Journal ArticleDOI

Frequency Ratio of Al+ and Hg+ Single-Ion Optical Clocks; Metrology at the 17th Decimal Place

TL;DR: Repeated measurements during the past year yield a preliminary constraint on the temporal variation of the fine-structure constant α of α ofbatchmode, a regime of operation for atomic clocks based on optical transitions, promising even higher performance.
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