Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

A single-beam slower and magneto-optical trap using a nanofabricated grating

Published

Author(s)

Daniel S. Barker, Eric B. Norrgard, Nikolai N. Klimov, James A. Fedchak, Julia K. Scherschligt, Stephen P. Eckel

Abstract

We demonstrate a compact (0.25 L) system for laser cooling and trapping atoms from a heated dispenser source. Our system uses a nano-fabricated diffraction grating to generate a magneto- optical trap (MOT) using a single input laser beam. An aperture in the grating allows atoms from the dispenser to be loaded from behind the chip, increasing the interaction distance of atoms with the cooling light. To take full advantage of this increased distance, we extend the magnetic field gradient of the MOT to create a Zeeman slower. The MOT traps approximately 10^6 lithium-7 atoms loaded from an effusive source at rates in excess of 10^6/s. Our design is portable to a variety of atomic and molecular species and can be an integral component for miniaturized cold-atom technologies.
Citation
Physical Review Applied

Keywords

laser cooling, magneto-optical trap, zeeman slower, cold core technology, cold atom vacuum standard
Created June 11, 2019, Updated January 27, 2020