Web22 nov. 2024 · Set it to run for one minute. 5. Move the object slowly around the microwave. Hold the light bulb or tester at least 5 cm (2 inches) away from the surface of the … Web22 jul. 2024 · The double interrogation between cold atoms and microwave gives Ramsey fringes, whose central fringe has a much narrower linewidth compared to the thermal …
Frontiers Development of Rb fountain clock for time keeping
Web12 sep. 2008 · The stability of an optical clock laser transferred to the interrogation oscillator for a Cs fountain B. Lipphardt, G. Grosche, U. Sterr, Chr. Tamm, S. Weyers, H. Schnatz We stabilise a microwave oscillator at 9.6 GHz to an optical clock laser at 344 THz by using a fibre-based femtosecond laser frequency comb as a transfer oscillator. WebReplacing the existing quartz-based interrogation oscillator of the PTB caesium fountain CSF1 with this optically stabilised microwave source will reduce the instability contribution due to the Dick effect from the 10-13-level at 1s averaging time to an insignificant level at the current status of CSF1. Therefore this ali abbas sister
Interrogation of caesium atoms in a fountain clock - arXiv Vanity
WebThis cavity is a typical TE011-mode cylindrical microwave resonator with a titanium tube and two oxygen-free copper (OFC) caps. The resonance frequency (RF) of the cavity … Web9 dec. 2008 · Replacing the existing quartz-based interrogation oscillator of the Physikalisch-Technische Bundesanstalt (PTB) caesium fountain CSF1 with this optically stabilized microwave source will reduce the instability contribution due to the Dick effect from the 10 -13 level at 1 s averaging time to an insignificant level at the current status of … Web11 mrt. 2009 · A cesium fountain clock is operated utilizing a microwave oscillator that derives its frequency stability from a stable laser by means of a fiber-laser femtosecond frequency comb. This oscillator is based on the technology developed for optical clocks and replaces the quartz-based microwave oscillator commonly used in fountain clocks. ali abbas uottawa