Project description
Modelling spatiotemporal mode locking with Kerr beam self-cleaning
Light has both particle and wave nature. Longitudinal waves move the medium in which they travel parallel to the wave direction whereas transverse waves move it perpendicular to the wave direction. Spatiotemporal mode-locking (STML) is thought to be possible by locking transverse and longitudinal modes in multimode fibre (MMF) lasers, is a route to ultrafast spatiotemporal laser pulses and novel nonlinear wave propagation. Kerr beam self-cleaning can diminish the detrimental effect of irregular beating of transverse waves. With the support of the Marie Skłodowska-Curie Actions programme, the BEAMLOCKER project will study the dynamics of STML MMF lasers with Kerr beam self-cleaning through a combination of modelling informed by preliminary experiments, supporting applications in fields from telecommunication to biomedicine.
Objective
Mode locking (ML) is the most important technique to generate ultrashort laser pulses. Tremendous progress has been made in locking longitudinal modes in lasers with a single transverse mode, e.g. single-mode fiber lasers. Spatiotemporal mode-locking (STML) has been proposed by locking transverse and longitudinal modes in multimode fiber (MMF) lasers to generate ultrafast spatiotemporal pulses, opening new directions in studies of nonlinear wave propagation. Thanks to fiber multimodality, such lasers generate pulses with higher power with respect to their single-mode counterpart. On the other hand, the irregular beating among transverse modes is detrimental to achieving high beam quality. This drawback can be overcome by Kerr beam self-cleaning in graded-index MMFs. As pulse power grows above a certain threshold, this process introduced by Kerr nonlinearity allows for an irreversible transfer of power from the high order modes into the fundamental mode, leading to a stable and robust bell-shaped output transverse profile. In this framework, the BEAMLOCKER project aims at studying the dynamics of STML MMF lasers with high-quality output beams by appropriate modeling. The models will be established starting from preliminary experimental studies, and they will be studied by analytical methods, direct numerical simulations, and numerical continuation and bifurcation methods. In addition, the noise behavior of STML lasers will be investigated in detail, with a particular focus on the beam self-cleaning regimes. The project results will stimulate further theoretical analysis and experiments on complex interactions in nonlinear multimode fiber systems. Furthermore, understanding the complex properties of STML MMF lasers will shed new light on frontier physical phenomena, such as spatiotemporal rogue waves generation and turbulence, which find applications in several fields, ranging from telecommunication to biomedicine.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: https://op.europa.eu/en/web/eu-vocabularies/euroscivoc.
- engineering and technology materials engineering fibers
- natural sciences physical sciences optics laser physics
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2021-PF-01
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00185 Roma
Italy
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