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A self-starting bi-chromatic LiNbO_3 soliton microcomb

He, Yang and Yang, Qi-Fan and Ling, Jingwei and Luo, Rui and Liang, Hanxiao and Li, Mingxiao and Shen, Boqiang and Wang, Heming and Vahala, Kerry and Lin, Qiang (2018) A self-starting bi-chromatic LiNbO_3 soliton microcomb. . (Unpublished)

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For its many useful properties, including second and third-order optical nonlinearity as well as electro-optic control, lithium niobate is considered an important potential microcomb material. Here, a soliton microcomb is demonstrated in a monolithic high-Q lithium niobate resonator. Besides the demonstration of soliton mode locking, the photorefractive effect enables mode locking to self-start and soliton switching to occur bi-directionally. Second-harmonic generation of the soliton spectrum is also observed, an essential step for comb self-referencing. The Raman shock time constant of lithium niobate is also determined by measurement of soliton self-frequency-shift. Besides the considerable technical simplification provided by a self-starting soliton system, these demonstrations, together with the electro-optic and piezoelectric properties of lithium niobate, open the door to a multi-functional microcomb providing f-2f generation and fast electrical control of optical frequency and repetition rate, all of which are critical in applications including time keeping, frequency synthesis/division, spectroscopy and signal generation.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Yang, Qi-Fan0000-0002-7036-1712
Wang, Heming0000-0003-3861-0624
Vahala, Kerry0000-0003-1783-1380
Alternate Title:A self-starting bi-chromatic LiNbO3 soliton microcomb
Additional Information:This project was supported in part by the Defense Threat Reduction Agency-Joint Science and Technology Office for Chemical and Biological Defense (grant No. HDTRA11810047), and by the National Science Foundation under grants No. ECCS-1810169 and ECCS-1610674. This work was performed in part at the Cornell NanoScale Facility, a member of the National Nanotechnology Coordinated Infrastructure (National Science Foundation, ECCS-1542081), and at the Cornell Center for Materials Research (National Science Foundation, DMR-1719875). Author contributions: Y.H. designed and fabricated the sample. Y.H. and Q.-F.Y. designed and performed the experiments. J.L. did the numerical simulations. Y.H., Q.-F.Y., and J.L. analyzed the data. J.L., R.L., B.S., and H.W. assisted in the experiments. R.L., H.L., and M.L. assisted in device fabrication. Y.H., Q.-F.Y., J.L., K.V., and Q.L. wrote the manuscript. K.V. and Q.L. supervised the project. Q.L. conceived the concept. The authors declare no competing financial interests.
Funding AgencyGrant Number
Defense Threat Reduction Agency (DTRA)HDTRA11810047
Record Number:CaltechAUTHORS:20190429-154122187
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95093
Deposited By: Tony Diaz
Deposited On:29 Apr 2019 22:57
Last Modified:29 Apr 2019 22:57

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