Université de Neuchâtel

Characterization of Frequency-Doubled 1.5-μm Lasers for High-Performance Rb Clocks

Almat, Nil ; Moreno, William ; Pellaton, Matthieu ; Gruet, Florian ; Affolderbach, Christoph ; Mileti, Gaetano

In: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2018, vol. 65, no. 6, p. 919-926

We report on the characterization of two fiber-coupled 1.5- μm diode lasers, frequency-doubled and stabilized to Rubidium (Rb) atomic resonances at 780 nm. Such laser systems are of interest in view of their implementation in Rb vaporcell atomic clocks, as an alternative to lasers emitting directly at 780 nm. The spectral properties and the instabilities of the frequency-doubled lasers are...

Accès public à partir du 7 mai 2019
Université de Neuchâtel

Rb vapor-cell clock demonstration with a frequency-doubled telecom laser

Almat, Nil ; Pellaton, Matthieu ; Moreno, William ; Gruet, Florian ; Affolderbach, Christoph ; Mileti, Gaetano

In: Applied Optics, 2018, vol. 57, no. 16, p. 4707-4713

We employ a recently developed laser system, based on a low-noise telecom laser emitting around 1.56 μm, to evaluate its impact on the performance of an Rb vapor-cell clock in a continuous-wave double-resonance scheme. The achieved short-term clock instability below 2.5·10−13·τ−1∕2 demonstrates, for the first time, the suitability of a frequency-doubled...

Université de Neuchâtel

Study of additive manufactured microwave cavities for pulsed optically pumped atomic clock applications

Affolderbach, Christoph ; Moreno, William ; Ivanov, A.E ; Debogovic,T ; Pellaton, Matthieu ; Skrivervik, A. K ; de Rijk, E ; Mileti, Gaetano

In: Applied Physics Letters, 2018/112//113502/1-5

Additive manufacturing (AM) of passive microwave components is of high interest for the cost-effective and rapid prototyping or manufacture of devices with complex geometries. Here, we pre-sent an experimental study on the properties of recently demonstrated microwave resonator cavities manufactured by AM, in view of their applications to high-performance compact atomic clocks. The microwave...

Université de Neuchâtel

Rb-stabilized laser at 1572 nm for CO2 monitoring

Matthey, Renaud ; Moreno, William ; Gruet, Florian ; Brochard, Pierre ; Schilt, Stéphane ; Mileti, Gaetano

In: Journal of Physics: Conference Series, 2016, vol. 723, no. 1, p. 012034

We have developed a compact rubidium-stabilized laser system to serve as optical frequency reference in the 1.55-μm wavelength region, in particular for CO2 monitoring at 1572 nm. The light of a fiber-pigtailed distributed feedback (DFB) laser emitting at 1560 nm is frequency-doubled and locked to a sub-Doppler rubidium transition at 780 nm using a 2-cm long vapor glass cell. Part of...