Csem Centre Suisse D'electronique Et De Microtechnique Sa&#x2014;recherche Et D&#xe9;veloppement

Csem Centre Suisse D'electronique Et De Microtechnique Sa

Rolex Sa

Steve Lecomte

Jacques Haesler

David Ruffieux

Guillaume Basset

Benjamin Gallinet

Tobias Herr

Laurent Balet

Ewelina Obrzud

A laser source apparatus () for generating temporal dissipative cavity solitons () comprises an input source-device (), being configured for providing an input light field (), and an optical resonator device () with a resonator () having a third order optical Kerr non-linearity and being coupled with the input source device () for generating the cavity solitons () by the driving input light field (), wherein the input source device () is configured for providing the input light field () as a pulse train of laser pulses (). Preferably, the pulse repetition rate of the input laser pulses () is adapted to the free spectral range of the resonator () and the carrier envelope offset frequency of the input laser pulses () is adapted to one of the resonant frequencies of the resonator (). Furthermore, a method of generating temporal dissipative cavity solitons () is described.

Laser source apparatus and method for generating temporal dissipative cavity solitons

In the present invention a new atomic clock is proposed comprising: at least one light source adapted to provide an optical beam, at least one photo detector and a vapor cell comprising a first optical window, said optical beam being directed through said vapor cell for providing an optical frequency reference signal, said photo detector being adapted to detect said optical frequency reference signal and to generate at least one reference signal, wherein&#x2014;said atomic clock comprises a first optical waveguide arranged to said first optical window, said first optical waveguide being arranged to incouple at least a portion of said optical beam, said first optical waveguide being sized and shaped so that said first guided light beam is expanded, a first outcoupler is arranged to outcouple at least a portion of said guided light beam to said vapor cell, &#x2014;the thickness t of the atomic clock is smaller than 15 nm.

Atomic clock

A wristwatch, which comprises an atomic oscillator comprising a system for detecting the beat frequencies obtained by the Raman effect.

Wristwatch with atomic oscillator

A device for an atomic clock, including: a laser source () generating a laser beam; a quarter-wave plate () modifying the linear polarization of the laser beam into a circular polarization and vice versa; a gas cell () placed on the laser beam having a circular polarization; a mirror () sending the laser beam back toward the gas cell; a first photodetector (); means () for diverting the reflected beam of the laser source (), and a second photodetector () placed behind the mirror (), the mirror being semitransparent and allowing a portion of the laser beam to pass therethrough, the second photodetector () being used for controlling the optical frequency of the laser and/or for controlling the temperature of the cell ().

Device for an atomic clock

A device for an atomic clock, including: a laser source () that generates a laser beam; a splitter () that makes it possible to divert and allow a portion of the laser beam to pass therethrough in accordance with a predefined percentage; a quarter-wave plate () that modifies the linear polarization of the laser beam into circular polarization and vice versa; a gas cell arranged on the circular polarization laser beam; a mirror () sending the laser beam back toward the gas cell (); a first photodetector (), and a polarizer () arranged between the laser beam outlet and the splitter in order to protect the laser source from the retroreflections emitted by different optical elements constituting the device.

Growing community of inventors

Bernex, Switzerland

Steve Lecomte