Spatiotemporal light-beam compression from nonlinear mode coupling

Year: 2018

Authors: Krupa K., Tonello A., Couderc V., Barthylymy A., Millot G., Modotto D., Wabnitz S.

Autors Affiliation: Univ Brescia, Dipartimento Ingn Informaz, Via Branze 38, I-25123 Brescia, Italy; Univ Limoges, UMR CNRS 7252, XLIM, 123 Av A Thomas, F-87060 Limoges, France; Univ Bourgogne, ICB, UMR CNRS 6303, 9 Av A Savary, F-21078 Dijon, France; CNR, INO, Via Branze 45, I-25123 Brescia, Italy.

Abstract: We experimentally demonstrate simultaneous spatial and temporal compression in the propagation of light pulses in multimode nonlinear optical fibers. We reveal that the spatial beam self-cleaning recently discovered in graded-index multimode fibers is accompanied by significant temporal reshaping and up to fourfold shortening of the injected subnanosecond laser pulses. Since the nonlinear coupling among the modes strongly depends on the instantaneous power, we explore the entire range of the nonlinear dynamics with a single optical pulse, where the optical power is continuously varied across the pulse profile.

Journal/Review: PHYSICAL REVIEW A

Volume: 97 (4)      Pages from: 43836-1  to: 43836-6

More Information: We acknowledge the financial support of the following: Horiba Medical and BPI France within the Dat@diag project; iXcore research foundation; French National Research Agency ANR Labex ACTION; French program Investissement d’Avenir, project ISITE-BFC-299 (ANR-15-IDEX-0003); the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (Grant Agreement No. 740355). K.K. has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant Agreement No. 713694 (MULTIPLY).
KeyWords: Laser pulses; Multimode fibers; Nonlinear optics; Optical fibers, Graded-Index Multimode fibers; Instantaneous power; Non-linear optical fibers; Nonlinear coupling; Nonlinear mode coupling; Propagation of lights; Single optical pulse; Temporal compressions; Light propagation
DOI: 10.1103/PhysRevA.97.043836

Citations: 45
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