Informations générales
Intitulé de l'offre : PhD offer M/F Mussot Match (H/F)
Référence : UMR8523-ARNMUS-005
Nombre de Postes : 1
Lieu de travail : VILLENEUVE D ASCQ
Date de publication : mercredi 9 avril 2025
Type de contrat : CDD Doctorant
Durée du contrat : 36 mois
Date de début de la thèse : 1 septembre 2025
Quotité de travail : Complet
Rémunération : 2200 gross monthly
Section(s) CN : 04 - Physique des atomes, molécules et plasmas. Optique et lasers
Description du sujet de thèse
Generation of frequency combs in multicore fibers
Contexte de travail
Optical frequency combs are groundbreaking light sources that have significantly advanced precision measurement science, exemplified by the Nobel Prize in Physics awarded to Theodore Hänsch in 2005. Their applications are diverse, ranging from pollutant detection to autonomous car distance measurement and even exoplanet detection [1].
In this PhD thesis, we aim to develop multiple frequency comb generation starting from a CW laser to assure a high degree of mutual coherence. We will exploit the nonlinear broadening experienced by this CW sources modulated by electro-optic modulators. The aim is to generate multiple frequency combs within an all fiber system suited for ultra-fast nonlinear spectroscopy investigations. The fiber will exhibit several cores in order to maintain a high degree of mutual coherence. A proof of concept had been already achieved [2], now the motivation is to fully exploit the potential offered by the fiber technology, unpacifically the longitudinal evolution of the linear and nonlinear parameters, to reach sub 100 fs pulses and 10's THz, performances required for advanced nonlinear spectroscopy systems.
Mots - clés : peignes de fréquence, ondes choc, ultra-fast optics
Compétences requises : optique non-linéaire, électronique, traitement du signal, fibres optiques avancées, simulations numériques (Matlab)
Bibliographie:
[1] T. Fortier and E. Baumann, "20 years of developments in optical frequency comb technology and applications," Commun. Phys. 2, 153 (2019).
[2] E.-L. Bancel et al., « All-fiber frequency agile triple-frequency comb light source », NATURE COMMUNICATIONS, vol. 14, no 1, p. 7953, déc. 2023, doi: 10.1038/s41467-023-43734-w.
Le poste se situe dans un secteur relevant de la protection du potentiel scientifique et technique (PPST), et nécessite donc, conformément à la réglementation, que votre arrivée soit autorisée par l'autorité compétente du MESR.
Contraintes et risques
Laser Risk
Informations complémentaires
DN MSCA MATCH. skills in nonlinear optics and physics expected