473 research outputs found
Investigation of Mode Interaction in Optical Microresonators for Kerr Frequency Comb Generation
Mode interaction in silicon nitride micro-resonators is investigated. We
provide clear experimental evidence of mode interaction between two family
modes and mode interaction is demonstrated to be the cause of the comb
generation in resonators with normal dispersion
Retrieving the Complex Intracavity Pump Field of a Kerr Comb from the Through Port Data
A method of retrieving the complex intracavity pump field from the through
port is proposed, and verified through characterizing the time-domain waveform
of a mode-locked comb related to dark soliton formation in a normal-dispersion
microresonator.Comment: 2 pages, 6 figure
Modelocked mid-infrared frequency combs in a silicon microresonator
Mid-infrared (mid-IR) frequency combs have broad applications in molecular
spectroscopy and chemical/biological sensing. Recently developed
microresonator-based combs in this wavelength regime could enable portable and
robust devices using a single-frequency pump field. Here, we report the first
demonstration of a modelocked microresonator-based frequency comb in the mid-IR
spanning 2.4 {\mu}m to 4.3 {\mu}m. We observe high pump-to-comb conversion
efficiency, in which 40% of the pump power is converted to the output comb
power. Utilizing an integrated PIN structure allows for tuning the silicon
microresonator and controling modelocking and cavity soliton formation,
simplifying the generation, monitoring and stabilization of mid-IR frequency
combs via free-carrier detection and control. Our results significantly advance
microresonator-based comb technology towards a portable and robust mid-IR
spectroscopic device that operates at low pump powers.Comment: 8 pages, 5 figure
Dissipative Kerr solitons in optical microresonators
This chapter describes the discovery and stable generation of temporal
dissipative Kerr solitons in continuous-wave (CW) laser driven optical
microresonators. The experimental signatures as well as the temporal and
spectral characteristics of this class of bright solitons are discussed.
Moreover, 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. Particular emphasis lies
on temporal dissipative Kerr solitons with regard to optical frequency comb
generation where they are of particular importance. Here, one example is
spectral broadening and self-referencing enabled by the ultra-short pulsed
nature of the solitons. Another example is dissipative Kerr soliton formation
in integrated on-chip microresonators where the emission of a dispersive wave
allows for the direct generation of unprecedentedly broadband and coherent
soliton spectra with smooth spectral envelope.Comment: To appear in "Nonlinear optical cavity dynamics", ed. Ph. Grel
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