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High-efficiency and broadband electro-optic frequency combs enabled by coupled micro-resonators

Hu, Yaowen and Yu, Mengjie and Buscaino, Brandon and Sinclair, Neil and Zhu, Di and Cheng, Rebecca and Shams-Ansari, Amirhassan and Shao, Linbo and Zhang, Mian and Kahn, Joseph M. and Lončar, Marko (2021) High-efficiency and broadband electro-optic frequency combs enabled by coupled micro-resonators. . (Unpublished) https://resolver.caltech.edu/CaltechAUTHORS:20220613-175653469

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Abstract

Developments in integrated photonics have led to stable, compact, and broadband comb generators that support a wide range of applications. Current on-chip comb generators, however, are still limited by low optical pump-to-comb conversion efficiencies. Here, we demonstrate an integrated electro-optic frequency comb with a conversion efficiency of 30% and an optical bandwidth of 132 nm, featuring a 100-times higher conversion efficiency and 2.2-times broader optical bandwidth compared with previous state-of-the-art integrated electro-optic combs. We further show that, enabled by the high efficiency, the device acts as an on-chip femtosecond pulse source (336 fs pulse duration), which is important for applications in nonlinear optics, sensing, and computing. As an example, in the ultra-fast and high-power regime, we demonstrate the observation of a combined EO-χ⁽³⁾ nonlinear frequency comb. Our device paves the way for practical optical frequency comb generators enabling energy-efficient computing, communication, and metrology, and provides a platform to investigate new regimes of optical physics that simultaneously involve multiple nonlinearities.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/2111.14743arXivDiscussion Paper
ORCID:
AuthorORCID
Hu, Yaowen0000-0002-0127-1959
Yu, Mengjie0000-0002-7815-4195
Buscaino, Brandon0000-0002-8662-1160
Zhu, Di0000-0003-0210-1860
Shams-Ansari, Amirhassan0000-0002-2165-7832
Shao, Linbo0000-0002-0615-7848
Zhang, Mian0000-0001-9838-3895
Lončar, Marko0000-0002-5029-5017
Additional Information:We thank Cheng Wang for helpful discussion. This work is supported by AFOSR grants FA9550-19-1-0376 and FA9550-19-1-0310, DARPA LUMOS HR0011-20-C-137, NASA 80NSSC21C0583, AFRL FA9550-21-1-0056, NSF ECCS-1839197, ARO W911NF2010248, DOE DE-SC0020376, Harvard Quantum Initiative, Facebook, Maxim Integrated (now Analog Devices), Inphi (now Marvell) and National Science Foundation under Grant ECCS-1740291 E2CDA. Device fabrication was performed at the Harvard University Center for Nanoscale Systems. Competing interests: M.Z. and M.L. are involved in developing lithium niobate technologies at HyperLight Corporation. The views, opinions and/or findings expressed are those of the author and should not be interpreted as representing the official views or policies of the Department of Defense or the U.S. Government.
Group:INQNET
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-19-1-0376
Air Force Office of Scientific Research (AFOSR)FA9550-19-1-0310
Defense Advanced Research Projects Agency (DARPA)HR0011-20-C-137
NASA80NSSC21C0583
Air Force Research Laboratory (AFRL)FA9550-21-1-0056
NSFECCS-1839197
Army Research Office (ARO)W911NF2010248
Department of Energy (DOE)DE-SC0020376
Harvard Quantum InitiativeUNSPECIFIED
FacebookUNSPECIFIED
Maxim IntegratedUNSPECIFIED
InphiUNSPECIFIED
NSFECCS-1740291
Record Number:CaltechAUTHORS:20220613-175653469
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20220613-175653469
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115136
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:13 Jun 2022 18:39
Last Modified:14 Jun 2022 15:12

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