Atomic fountain of laser-cooled Yb atoms for precision measurements

Pandey, Kanhaiya and Rathod, KD and Singh, Alok K and Natarajan, Vasant (2010) Atomic fountain of laser-cooled Yb atoms for precision measurements. In: Physical Review A, 82 (4).

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Abstract

We demonstrate launching of laser-cooled Yb atoms in a cold atomic fountain. Atoms in a collimated thermal beam are first cooled and captured in a magneto-optical trap (MOT) operating on the strongly allowed S-1(0) -> P-1(1) transition at 399 nm (blue line). They are then transferred to a MOT on the weakly allowed S-1(0) -> P-3(1) transition at 556 nm (green line). Cold atoms from the green MOT are launched against gravity at a velocity of around 2.5 m/s using a pair of green beams. We trap more than 107 atoms in the blue MOT and transfer up to 70% into the green MOT. The temperature for the odd isotope Yb-171 is similar to 1 mK in the blue MOT, and reduces by a factor of 40 in the green MOT.

Item Type:	Journal Article
Publication:	Physical Review A
Publisher:	The American Physical Society
Additional Information:	Copyright of this article belongs to The American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	18 Nov 2010 12:17
Last Modified:	18 Nov 2010 12:17
URI:	http://eprints.iisc.ac.in/id/eprint/33830

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