7 papers
Correlated inhomogeneous absorption profiles across distinct optical transitions in a rare-earth doped crystal
Flora Segur, Sacha Welinski, Alban Ferrier +2
In rare-earth ion-doped crystals, inhomogeneous absorption profiles reflect the distribution of local environments experienced by individual ions. While each optical transition pro…
Analog phase-sensitive time-reversal of optically-carried radiofrequency signals
Thomas Llauze, Anne Louchet-Chauvet
Achieving low-latency time-reversal of broadband radiofrequency signals is crucial for reliable communications in dynamic, uncontrolled environments. However, existing approaches a…
Versatile, fast and accurate frequency excursions with a semiconductor laser
Thomas Llauze, Félix Montjovet-Basset, Anne Louchet-Chauvet
Achieving accurate arbitrary frequency excursions with a laser can be quite a technical challenge, especially when steep slopes (GHz/s) are required, due to both deterministic a…
Deep and persistent spectral holes in Tm-doped yttrium orthosilicate for imaging applications
Caroline Venet, Benjamin Car, Lucile Veissier +2
With their optical wavelength in the near infrared (790-800nm) and their unique spectroscopic properties at cryogenic temperatures, thulium-doped crystals are at the center of many…
Optical study of the anisotropic erbium spin flip-flop dynamics
B. Car, L. Veissier, A. Louchet-Chauvet +2
We investigate the erbium flip-flop dynamics as a limiting factor of the electron spin lifetime and more generally as an indirect source of decoherence in rare-earth doped insulato…
Piezospectroscopic measurement of high-frequency vibrations in a pulse-tube cryostat
Anne Louchet-Chauvet, Rose Ahlefeldt, Thierry Chanelière
Vibrations in cryocoolers are a recurrent concern to the end user. They appear in different parts of the acoustic spectrum depending on the refrigerator type, Gifford McMahon or pu…