0000000000652890
AUTHOR
Jean-christophe Delagnes
showing 5 related works from this author
Taper à fibre optique microstructurée air/slice à dispersion modifiée pour une émission large bande et accordée autour de 2 µM par mélange à quatre o…
2022
International audience; Ce travail rapporte la conception, la fabrication et la caractérisation d'une fibre optique mircrostructurée air/silice effilée permettant une conversion de fréquence large bande par le processus de mélange à quatre ondes vers le moyen infra-rouge. Nous démontrons expérimentalement une bande de gain paramétrique de près de 100 nm. Une utilisation envisagée de ce taper réside dans le développement de sources laser femtosecondes.
Rapid characterisation of Photonic Crystal Fibre dispersive properties by a stochastic and tunable picosecond pump source
2022
International audience
Plug-and-play measurement of chromatic dispersion by means of two-photon interferometry
2023
International audience; Since the first proof-of-principle experiments 25 years ago, quantum metrology has matured from fundamental concepts to versatile and powerful tools in a large variety of research branches, such as gravitational-wave detection, atomic clocks, plasmonic sensing, and magnetometry. At the same time, two-photon interferometry, which underpins the possibility of entanglement to probe optical materials with unprecedented levels of precision and accuracy, holds the promise to stand at the heart of innovative functional quantum sensing systems. We report a novel quantum-based method for measuring the frequency dependence of the velocity in a transparent medium, i.e, the chro…
Dispersion engineered tapered photonic crystal fiber for broadband and tuned 2 µm emission using degenerate four-wave mixing
2022
International audience; We numerically demonstrate a broadband parametric gain around 2 µm using a tapered Photonic crystal fiber.
Higher-order dispersion parameters management in highly nonlinear photonic crystal fibers for far-detuned frequency conversion
2022
International audience; In this communication we present results dealing with the precise management of dispersion coefficients into two highly nonlinear fiber structures (a tapered PCF and an all-solid fiber) for far-detuned frequency conversion towards 2µm.