Push beam spot-size dependence of atom transfer in a double magneto-optical trap setup

S P Ram; S K Tiwari; S R Mishra; H S Rawat

doi:10.1063/1.4812339

Push beam spot-size dependence of atom transfer in a double magneto-optical trap setup

Rev Sci Instrum. 2013 Jul;84(7):073102. doi: 10.1063/1.4812339.

Authors

S P Ram¹, S K Tiwari, S R Mishra, H S Rawat

Affiliation

¹ Laser Physics Applications Section, Raja Ramanna Centre for Advanced Technology, Indore 452013, India. spram@rrcat.gov.in

PMID: 23902039
DOI: 10.1063/1.4812339

Abstract

We have studied the dependence of atom transfer between two magneto-optical traps (MOTs) on the spot-size of a push laser beam in a double magneto-optical trap setup. It was observed that the spot-size of the push beam at vapor-chamber MOT (VC-MOT) affects significantly the transfer of atoms from the VC-MOT to an ultrahigh vacuum MOT (UHV-MOT). The number of atoms accumulated in the UHV-MOT first increases with the push beam spot-size and then decreases with it after attaining a maximum value, for a given power of the push beam. Our results show that the number of atoms accumulated in the UHV-MOT is dependent on the push beam spot-size, push beam power, and capture speed of the UHV-MOT.