Enhanced observation time of magneto-optical traps using micro-machined non-evaporable getter pumps

Autor:	Boudot, Rodolphe, McGilligan, James P., Moore, Kaitlin R., Maurice, Vincent, Martinez, Gabriela D., Hansen, Azure, de Clercq, Emeric, Kitching, John
Rok vydání:	2020
Předmět:	Physics - Atomic Physics
Druh dokumentu:	Working Paper
Popis:	We show that micro-machined non-evaporable getter pumps (NEGs) can extend the time over which laser cooled atoms canbe produced in a magneto-optical trap (MOT), in the absence of other vacuum pumping mechanisms. In a first study, weincorporate a silicon-glass microfabricated ultra-high vacuum (UHV) cell with silicon etched NEG cavities and alumino-silicateglass (ASG) windows and demonstrate the observation of a repeatedly-loading MOT over a 10 minute period with a single laser-activated NEG. In a second study, the capacity of passive pumping with laser activated NEG materials is further investigated ina borosilicate glass-blown cuvette cell containing five NEG tablets. In this cell, the MOT remained visible for over 4 days withoutany external active pumping system. This MOT observation time exceeds the one obtained in the no-NEG scenario by almostfive orders of magnitude. The cell scalability and potential vacuum longevity made possible with NEG materials may enable inthe future the development of miniaturized cold-atom instruments. Comment: 9 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2008.00831 Zobrazit plný text záznamu View this record from Arxiv