Patents Assigned to CSEM Centre Suisse d'Electronique et de Microtechniques SA — Recherche et Développement
  • Optical pumping device and method
    Patent number: 7656241
    Abstract: A method for optical pumping of particles and a device for implementing same. The particles (14) are changed from one long lifetime level to another long lifetime level via a short lifetime level by means of interaction with light radiation (16) emitted by a laser source. Prior to this interaction, the light radiation undergoes depolarization in a direction that is essentially perpendicular to the direction of propagation thereof, so as to reduce the entrapment of particles (14) in the black state.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: February 2, 2010
    Assignee: CSEM Centre Suisse d'Electronique et de Microtechniques SA — Recherche et Développement
    Inventors: Patrick Berthoud, Pierre Thomann