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High-efficiency and broadband on-chip electro-optic frequency comb generators.
- Source :
- Nature Photonics; Oct2022, Vol. 16 Issue 10, p679-685, 7p
- Publication Year :
- 2022
-
Abstract
- Developments in integrated photonics have led to stable, compact and broadband comb generators that support a wide range of applications including communications1, ranging2, spectroscopy3, frequency metrology4, optical computing5,6 and quantum information7,8. Broadband optical frequency combs can be generated in electro-optical cavities, where light passes through a phase modulator multiple times while circulating in an optical resonator9–12. However, broadband electro-optic frequency combs are currently limited by low conversion efficiencies. Here we demonstrate an integrated electro-optic frequency comb with a conversion efficiency of 30% and an optical span of 132 nm, based on a coupled-resonator platform on thin-film lithium niobate13. 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 ultrafast and high-power regime, we demonstrate a frequency comb with simultaneous electro-optic and third-order nonlinearity effects. Our device paves the way for practical optical frequency comb generators and provides a platform to investigate new regimes of optical physics that simultaneously involve multiple nonlinearities. A double-ring-resonator device on thin-film lithium niobate enables the generation of electro-optic frequency combs with a 30% power efficiency and an optical span of 132 nm. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 17494885
- Volume :
- 16
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Nature Photonics
- Publication Type :
- Academic Journal
- Accession number :
- 159381657
- Full Text :
- https://doi.org/10.1038/s41566-022-01059-y