Two-Color Grating Magneto-Optical Trap for Narrow-Line Laser Cooling
- verfasst von
- S. Bondza, C. Lisdat, S. Kroker, T. Leopold
- Abstract
We demonstrate the two-color cooling and trapping of alkaline-earth atoms in a grating magneto-optical trap (GMOT). The trap is formed by a single incident laser beam together with four secondary beams that are generated via diffraction from a nanostructured wafer. A grating structure for a GMOT operating with strontium atoms is optimized and fabricated. We trap 10688Sr atoms on the 1S0→1P1 transition at 461nm and transfer 25% of these atoms to the second cooling stage on the narrower 1S0→3P1 intercombination transition at 689nm, preparing a sample of 2.5×105 atoms at 5μK. These results demonstrate the applicability of the GMOT technology in conjunction with two widely differing wavelengths and enable the continued miniaturization of alkaline-earth-based quantum technologies like optical atomic clocks.
- Externe Organisation(en)
-
Physikalisch-Technische Bundesanstalt (PTB)
DLR-Institut für Satellitengeodäsie und Inertialsensorik
Technische Universität Braunschweig
Laboratory for Emerging Nanometrology Braunschweig (LENA)
- Typ
- Artikel
- Journal
- Physical review applied
- Band
- 17
- ISSN
- 2331-7019
- Publikationsdatum
- 01.04.2022
- Publikationsstatus
- Veröffentlicht
- Peer-reviewed
- Ja
- ASJC Scopus Sachgebiete
- Physik und Astronomie (insg.)
- Elektronische Version(en)
-
https://doi.org/10.1103/physrevapplied.17.044002 (Zugang:
Offen)