Metrological characterization of INRIM's Yb lattice clock
| Autor: | Filippo Bregolin, Davide Calonico, Filippo Levi, Benjamin Rauf, Gianmaria Milani, Pierre Thoumany, Marco Pizzocaro, Cecilia Clivati, Giovanni Antonio Costanzo, Michele Gozzelino |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Optical fiber business.industry Infrared Computer Networks and Communications Physics::Optics Frequency standard Laser 01 natural sciences law.invention 010309 optics Optical pumping Wavelength Optics law 0103 physical sciences Signal Processing Atom optics Physics::Atomic Physics Instrumentation Atomic physics 010306 general physics business Quantum clock |
| Popis: | We present the results of a preliminary metrological characterization of our neutral 171Ytterbium-atoms lattice clock at INRIM. During one clock cycle we cool and trap the atoms utilizing 399 nm laser light for the first stage magneto-optical trap (MOT), followed by a cooler 556 nm 2nd stage MOT. Atoms are then transferred in a one-dimensional, horizontal lattice adjusted to the magic wavelength (759 nm). Subsequently the clock transition at 578 nm is excited by a laser stabilized to an ultra-stable cavity, followed by repumping and state-detection. We obtain 2 · 103 atoms in the lattice after 150 ms of loading time. The laser radiation at 399 nm, 556 nm and 578 nm is produced via infrared lasers and non-linear crystals, whereas the lattice features a Titanium-Sapphire laser. A detailed description of the laser light generation and stabilization as well as of the the physics package is given. We locked the clock laser to the atoms and achieved a first metrological characterization through optical fiber-comb based comparison with INRIM's primary frequency standard, the IT-CsF2 cryogenic fountain clock [1]. The reported frequency of the clock transition agrees to the value recommended by the BIPM [2] within the stated uncertainty. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|