Next generation ultrastable lasers: reducing thermal noise limit and overcoming technical limitations with new materials and technologies

Project: EU project

Project Details


Ultrastable lasers for optical clocks, science and technology

Ultrastable lasers are basic building blocks of optical clocks and benefit navigation, telecommunications, and synchronization of large-scale experimental facilities. New technologies promise substantial reduction of their current frequency stability.

Project addresses all the current limitations of ultrastable lasers, aiming for next generation of these devices with instabilities at and below 110–17.

VTT MIKES develops methods for active vibration control and thermal noise suppression in Fabry-Perot cavities and implements different approaches for phase-locked loops to improve the
signal-to-noise ratio of optical beatnotes.

Call 2020: Fundamental Metrology

This project has received funding from the EMPIR programme co-financed by the Participating States and from the European Union’s Horizon 2020 research and innovation programme.
Effective start/end date1/05/2130/04/24

Collaborative partners

  • German National Metrology Institute (PTB) (lead)
  • BA66 National metrology institute VTT MIKES
  • National Metrological Institute (INRIM) (Project partner)
  • Laboratoire National de Métrologie et d’Essais (LNE) (Project partner)
  • Paris Observatory (Project partner)
  • RISE Research Institutes of Sweden (Project partner)
  • French National Center for Scientific Research (CNRS) (Project partner)
  • Heinrich Heine University Düsseldorf (Project partner)
  • LINKS Foundation (Project partner)
  • Lund University (Project partner)
  • Technische Universität Braunschweig (TUBS) (Project partner)
  • Nicolaus Copernicus University (Project partner)


  • EURAMET e.V.


  • ultrastable lasers