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Related Experiment Video

Updated: Mar 13, 2026

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

Multicolor interband solitons in microcombs.

Qing-Xin Ji¹, Hanfei Hou¹, Jinhao Ge¹

¹T. J. Watson Laboratory of Applied Physics, California Institute of Technology, Pasadena, CA, USA.

Light, Science & Applications

|March 12, 2026

Summary

This summary is machine-generated.

Researchers observed multicolor pulses generated from a single optical pump. This phenomenon, related to multicolor solitons, utilizes interband coupling in compound resonators for potential phase-locked pulse generation.

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Area of Science:

Nonlinear optics
Optical microcavities
Soliton physics

Background:

Solitons in microcombs can induce optical gain in non-soliton modes.
Theoretical models propose Kerr-induced interactions can form multicolor solitons with phase-locked pulses.
Conventional microresonators lack the necessary dispersion conditions for this phenomenon.

Purpose of the Study:

To experimentally observe multicolor pulses generated from a single optical pump.
To investigate a phenomenon closely related to multicolor solitons.
To explore the generation of potentially phase-locked pulses using interband coupling.

Main Methods:

Utilizing interband coupling in a compound optical resonator.
Employing a single optical pump to generate secondary temporal pulses.
Experimental observation of multicolor pulse generation.

Main Results:

Successfully generated multicolor pulses from a single optical pump.
Observed pulses that share the same repetition rate.
Demonstrated a phenomenon closely related to multicolor solitons.
Generated pulses using interband coupling in a compound resonator.

Conclusions:

Multicolor pulses can be experimentally generated using interband coupling in compound resonators.
The observed phenomenon is closely related to the theoretical concept of multicolor solitons.
The generated pulses have the potential for full phase-locking.