General information
Offer title : PhD offer M/F Mussot Match (H/F)
Reference : UMR8523-ARNMUS-005
Number of position : 1
Workplace : VILLENEUVE D ASCQ
Date of publication : 09 April 2025
Type of Contract : FTC PhD student / Offer for thesis
Contract Period : 36 months
Start date of the thesis : 1 September 2025
Proportion of work : Full Time
Remuneration : 2200 gross monthly
Section(s) CN : 04 - Atoms and molecules, optics and lasers, hot plasmas
Description of the thesis topic
Generation of frequency combs in multicore fibers
Work Context
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.
The position is located in a sector under the protection of scientific and technical potential (PPST), and therefore requires, in accordance with the regulations, that your arrival is authorized by the competent authority of the MESR.
Constraints and risks
Laser Risk
Additional Information
DN MSCA MATCH. skills in nonlinear optics and physics expected