| Autor: |
Brynle Barrett, Adam Carew, Hermina C. Beica, Andrejs Vorozcovs, Alexander Pouliot, A. Kumarakrishnan |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Atoms, Vol 4, Iss 3, p 19 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
2218-2004 |
| DOI: |
10.3390/atoms4030019 |
| Popis: |
Echo atom interferometers have emerged as interesting alternatives to Raman interferometers for the realization of precise measurements of the gravitational acceleration g and the determination of the atomic fine structure through measurements of the atomic recoil frequency ω q . Here we review the development of different configurations of echo interferometers that are best suited to achieve these goals. We describe experiments that utilize near-resonant excitation of laser-cooled rubidium atoms by a sequence of standing wave pulses to measure ω q with a statistical uncertainty of 37 parts per billion (ppb) on a time scale of ∼50 ms and g with a statistical precision of 75 ppb. Related coherent transient techniques that have achieved the most statistically precise measurements of atomic g-factor ratios are also outlined. We discuss the reduction of prominent systematic effects in these experiments using off-resonant excitation by low-cost, high-power lasers. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
