Accès ouvert
2025
conference-abstract
OpenAlex
Lauriane Karlen, E. Onillon, Stefan Kundermann, Steve Lecomte et autres
The Laser Interferometer Space Antenna (LISA) mission will form an interferometer spanning arm lengths of 2.5 million kilometers to detect cosmic ripples in spacetime with a picometer resolution. To be able to measure gravitational waves, the laser system must meet stringent performance …
ch, us, de
(code pays fourni par la source)
2025
conference-paper
OpenAlex
Etienne Batori, Thibaud Ruelle, Stefan Kundermann, Victor Helson et autres
SummaryProgress on the development of a compact two-photon Rb clock designed for timekeeping applications is presented. Current short-term and long-term limitations of the technology are discussed. Continuous operation during 4 months of an integrated prototype at the Swiss national metrology institute (METAS), …
ch
(code pays fourni par la source)
2024
conference-paper
OpenAlex
Thibaud Ruelle, Etienne Batori, Stefan Kundermann, Xavier Stehlin et autres
The performance of a two-photon atomic clock currently developed at CSEM in partnership with Rolex is reported. This clock, designed in view of its integration in a 19-inch rack-mount enclosure, is intended for 24/7 operation as Rolex timescales master clock. Its design, …
ch
(code pays fourni par la source)
Accès ouvert
2024
article
OpenAlex
Roman Blum, Séverine Denis, Lauriane Karlen, Stefan Kundermann et autres
Stabilized dual optical frequency transfer is demonstrated through wavelength-division or polarization multiplexing in a 184-meter long polarization-maintaining fiber link. The latter is stabilized at a primary frequency in the telecom C-band using the established Doppler cancellation technique. Simultaneously, a secondary optical frequency …
ch
(code pays fourni par la source)
2024
conference-paper
OpenAlex
Roman Blum, Stefan Kundermann, Thibaud Ruelle, Steve Lecomte et autres
The rubidium two-photon optical atomic clock is a promising technology for applications that require a compact yet stable timekeeping device. However, its long-term frequency stability is often limited by the light shift (or AC Stark effect). In a rubidium two-photon frequency standard, …
ch
(code pays fourni par la source)
Accès ouvert
2023
article
OpenAlex
Garrett D. Cole, Silvio Koller, Christian Greve, G. P. Barwood et autres
We present the development of a transportable laser frequency stabilization system with application to both optical clocks and a next-generation gravity mission (NGGM) in space. This effort leverages a 5-cm long cubic cavity with crystalline coatings operating at room temperature and with …
de, us, it, gb, ch, fr
(code pays fourni par la source)
2023
conference-paper
OpenAlex
Lauriane Karlen, E. Onillon, Stefan Kundermann, Steve Lecomte et autres
The Laser Interferometer Space Antenna (LISA), with its extreme distance measurement requirements (pm over arm lengths of 2.5 million km), imposes many stringent requirements on the laser sources used for the distance metrological measurements.In particular, meeting the frequency noise, power stability and …
ch, us, nl
(code pays fourni par la source)
2022
conference-paper
OpenAlex
Lauriane Karlen, Stefan Kundermann, Steve Lecomte, Anatoliy A. Savchenkov et autres
The Laser Interferometer Space Antenna (LISA), with its extreme distance measurement requirements (pm over arm lengths of 2.5 Mio km), imposes many stringent requirements on the laser sources used for interferometry. Frequency and power stability, as well as the side band phase …
ch, us
(code pays fourni par la source)
Accès ouvert
2022
article
OpenAlex
Sanghoon Chin, Séverine Denis, Stefan Kundermann, Victor Brasch et autres
A digital optical phase-locked loop (OPLL) has been implemented to develop a distributed Brillouin sensing system in optical fibers. In our experiment, two commercial semiconductor lasers are phase-locked to each other with a highly flexible offset frequency using field programmable gate array …
ch
(code pays fourni par la source)
Accès ouvert
2021
article
OpenAlex
Ewelina Obrzud, Séverine Denis, Hamed Sattari, Grégory Choong et autres
Optical frequency combs have become a very powerful tool in metrology and beyond, thanks to their ability to link radio frequencies with optical frequencies via a process known as self-referencing. Typical self-referencing is accomplished in two steps: the generation of an octave-spanning …
ch
(code pays fourni par la source)
Accès ouvert
2021
dataset
OpenAlex
Ewelina Obrzud, Séverine Denis, Hamed Sattari, Grégory Choong et autres
Stable and compact RF-to-optical link using lithium niobate on insulator waveguides Optical frequency combs have become a very powerful tool in metrology and beyond thanks to their ability to link radio frequencies with optical frequencies via a process known as self-referencing. Typical …
ch
(code pays fourni par la source)
Accès ouvert
2021
preprint
OpenAlex
Ewelina Obrzud, Séverine Denis, Hamed Sattari, Grégory Choong et autres
Optical frequency combs have become a very powerful tool in metrology and beyond thanks to their ability to link radio frequencies with optical frequencies via a process known as self-referencing. Typical self-referencing is accomplished in two steps: the generation of an octave-spanning …
ch
(code pays fourni par la source)