OHMS - Oscillateurs, Horloges, Métrologie et Systèmes (Oscillators, Clocks, Metrology and Systems)
Head of OHMS group: Dr. Rodolphe Boudot [rodolphe.boudot@femto-st.fr]
The OHMS group (FEMTO-ST, Time-Frequency Department) is involved in the development and characterization of ultra-stable secondary frequency standards. The OHMS Group pilots the OSCILLATOR-IMP Equipex Platform (http://oscillator-imp.com/dokuwiki/doku.php), is a partner of LabeX FIRST-TF network (https://first-tf.fr/) and is a partner of the Equipex REFIMEVE+ project (http://www.refimeve.fr/).
Our main activities involve the development of:
Microwave secondary frequency standards
- Cryogenic sapphire oscillators
- Microwave cell-based atomic clocks
- Cavity-stabilized lasers and microwave photonics
- Compact Yb+ optical atomic clock
- MEMS-cell based optical frequency reference
- Yb superradiant laser
High-Q cryogenic acoustic cavities
Phase noise and time-frequency metrology