期刊
NATURE COMMUNICATIONS
卷 7, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms10427
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资金
- Center of Excellence CUDOS [CE110001018]
- Laureate Fellowship schemes of the Australian Research Council (ARC) [FL120100029]
- University of Sydney
- Technion collaborative photonics research project - Department of Trade and Investment, Regional Infrastructure and Services of the New South Wales Government
- Technion Society of Australia NSW
- EPSRC UK Silicon Photonics [EP/F001428/1]
- ARC Discovery Early Career Researcher award [DECRA-DE120102069]
- EPSRC [EP/F001622/1, EP/F001428/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F001428/1, EP/F001622/1] Funding Source: researchfish
Temporal optical solitons have been the subject of intense research due to their intriguing physics and applications in ultrafast optics and supercontinuum generation. Conventional bright optical solitons result from the interaction of anomalous group-velocity dispersion and self-phase modulation. Here we experimentally demonstrate a class of bright soliton arising purely from the interaction of negative fourth-order dispersion and self-phase modulation, which can occur even for normal group-velocity dispersion. We provide experimental and numerical evidence of shape-preserving propagation and flat temporal phase for the fundamental pure-quartic soliton and periodically modulated propagation for the higher-order pure-quartic solitons. We derive the approximate shape of the fundamental pure-quartic soliton and discover that is surprisingly Gaussian, exhibiting excellent agreement with our experimental observations. Our discovery, enabled by precise dispersion engineering, could find applications in communications, frequency combs and ultrafast lasers.
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