Multidirectional Doppler pumping: A new method to prepare an atomic beam having a large fraction of excited atoms
作者:
H. J. Gerritsen,
G. Nienhuis,
期刊:
Applied Physics Letters
(AIP Available online 1975)
卷期:
Volume 26,
issue 6
页码: 347-349
ISSN:0003-6951
年代: 1975
DOI:10.1063/1.88159
出版商: AIP
数据来源: AIP
摘要:
We discuss some problems associated with obtaining an atomic beam with a large fraction of excited−state atoms. We show, e.g., that for sodium atoms to be pumped up into the 32P1/2state, they must experience a minimum of three optical frequencies near theD1line. In order to achieve this with only one optical frequency, the following method is proposed: A strong laser beam impinges three times on an atomic beam, each time under a different angle, in such a way that for one velocity class the Doppler shift generates the three frequencies needed. The effects of the polarization of the laser beams are discussed.
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