Probing an auxiliary laser to tune the repetition rate of a soliton microcomb

dc.contributor.authorMahmood, Tanvir
dc.contributor.authorCahill, James P.
dc.contributor.authorSykes, Patrick
dc.contributor.authorCourtright, Logan
dc.contributor.authorWu, Lue
dc.contributor.authorVahala, Kerry J.
dc.contributor.authorMenyuk, Curtis
dc.contributor.authorZhou, Weimin
dc.date.accessioned2025-03-11T14:42:36Z
dc.date.available2025-03-11T14:42:36Z
dc.date.issued2025-02-15
dc.description.abstractWe demonstrate that it is possible to linearly tune the repetition rate of a bright soliton comb that is generated using an Si3N4 microring resonator by linearly varying the frequency of an auxiliary heater laser. Hence, the auxiliary laser can be utilized as a linear active feedback element for stabilizing the repetition rate. We investigated the potential of the auxiliary laser as an actuator of the soliton repetition rate by varying the auxiliary laser frequency at different modulation rates. Within the modulation bandwidth of the laser, we find that the variation ratio, defined as the ratio of the change in the repetition rate to the change in the laser frequency, remains unchanged. This variation ratio also quantifies the correlation between the frequency drift of the auxiliary laser and the repetition rate phase noise and makes it possible to examine the impact of frequency drift on the attainable phase noise performance of the soliton microcomb. For our setup, we find that the repetition rate phase noise of the microcomb below a 1-kHz offset from the carrier is dominated by the frequency drift of the auxiliary laser, which emphasizes the importance of deploying an inherently low-phase-noise laser when auxiliary laser heating technique is utilized.
dc.description.sponsorshipU.S. Department of Defense (HQ0034-20-2-0007). Work at UMBC was supported by collaborative agreements 2022138-142232 and 2023200-142386 with the National Center for Manufacturing Sciences as a sub-award from US DoD cooperative agreement HQ0034-20-2-0007.
dc.description.urihttps://opg.optica.org/optcon/abstract.cfm?uri=optcon-4-2-364
dc.format.extent11 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m2dyvc-w7xh
dc.identifier.citationMahmood, Tanvir, James P. Cahill, Patrick Sykes, Logan Courtright, Lue Wu, Kerry J. Vahala, Curtis R. Menyuk, and Weimin Zhou. "Probing an Auxiliary Laser to Tune the Repetition Rate of a Soliton Microcomb". Optics Continuum 4, no. 2 (February 15, 2025): 364–74. https://doi.org/10.1364/OPTCON.547259.
dc.identifier.urihttps://doi.org/10.1364/OPTCON.547259
dc.identifier.urihttp://hdl.handle.net/11603/37753
dc.language.isoen_US
dc.publisherOptica
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Computer Science and Electrical Engineering Department
dc.relation.ispartofUMBC Student Collection
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Mathematics and Statistics Department
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rightsPublic Domain
dc.rights.urihttps://creativecommons.org/publicdomain/mark/1.0/
dc.subjectPhase noise
dc.subjectFrequency combs
dc.subjectFrequency modulation
dc.subjectTunable diode lasers
dc.subjectUMBC Computational Photonics Lab
dc.subjectOptical amplifiers
dc.subjectKerr effect
dc.titleProbing an auxiliary laser to tune the repetition rate of a soliton microcomb
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0003-0269-8433

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