A self-starting bi-chromatic LiNbO_3 soliton microcomb
Abstract
The wide range of functions that are possible with lithium niobate (LN) waveguide devices, including phase and intensity modulation, second-harmonic generation, and difference-frequency generation, makes it attractive as a potential microcomb material. LN microcombs would combine essential comb self-referencing and control functions with the pulse generation process in a single microresonator device. Here, we demonstrate a soliton microcomb in a monolithic high-Q LN resonator. Direct frequency doubling of the soliton spectrum is observed inside the same cavity. The LN soliton mode-locking process also self-starts and allows bi-directional switching of soliton states, effects that are shown to result from the LN photorefractive effect. The Kerr solitons exhibit a self-frequency shift resulting from the Raman effect of LN. This microcomb platform can dramatically simplify miniature time keeping, frequency synthesis/division, and spectroscopy systems. Moreover, direct generation of femtosecond timescale pulses within LN microresonators can benefit quantum photonics and signal processing systems.
Additional Information
© 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Received 3 June 2019; revised 29 July 2019; accepted 6 August 2019 (Doc. ID 369098); published 30 August 2019. This work was performed in part at the Cornell NanoScale Facility, a member of the National Nanotechnology Coordinated Infrastructure (National Science Foundation), and at the Cornell Center for Materials Research (National Science Foundation). The project or effort depicted was or is sponsored by the Department of the Defense, Defense Threat Reduction Agency. The content of the information does not necessarily reflect the position or the policy of the federal government, and no official endorsement should be inferred. Funding: Defense Threat Reduction Agency (HDTRA11810047); National Science Foundation (ECCS-1810169, ECCS-1842691, EFMA-1641099, DMR-1719875); Air Force Office of Scientific Research (FA9550-18-1-0353).Attached Files
Published - optica-6-9-1138.pdf
Submitted - 1812.09610.pdf
Supplemental Material - 4081086.pdf
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Additional details
- Alternative title
- A self-starting bi-chromatic LiNbO3 soliton microcomb
- Eprint ID
- 95093
- Resolver ID
- CaltechAUTHORS:20190429-154122187
- Defense Threat Reduction Agency (DTRA)
- HDTRA11810047
- NSF
- ECCS-1810169
- NSF
- ECCS-1842691
- NSF
- EFMA-1641099
- NSF
- DMR-1719875
- Air Force Office of Scientific Research (AFOSR)
- FA9550-18-1-0353
- Created
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2019-04-29Created from EPrint's datestamp field
- Updated
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2023-06-01Created from EPrint's last_modified field