Fluorescence from doubly driven four-level atoms

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/3138

Title:	Fluorescence from doubly driven four-level atoms
Authors:	Narayanan, Andal Srinivasan, R. Khan, Uday Kumar Vudayagiri, A. Ramachandran, Hema
Issue Date:	2004
Publisher:	EDP Sciences
Citation:	European Physical Journal D, 2004, Vol.31, p107-112
Abstract:	The unusually narrow features in the fluorescence from 85Rb driven by two laser fields L1 and L2, reported in [1], are explained on the basis of a four-level density matrix calculation. The L2 laser enables atom transfer to the fluorescing levels connected by the strong L1 laser. In turn the L1 laser causes the Autler-Townes splitting of the upper levels connected by L2 laser. These two effects are shown to maximise fluorescence within a narrow spectral range of the scanned L2 laser due to velocity selection of atoms from co-propagating and counter propagating L1 and L2 lasers. The analysis reveals the existence of narrow spectral features from a collection of atoms at room temperature even in the absence of induced coherences between the levels.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/3138
ISSN:	1434-6060 1434-6079 (Online)
Alternative Location:	http://dx.doi.org/10.1140/epjd/e2004-00123-2
Copyright:	2004 EDP Sciences
Appears in Collections:	Research Papers (LAMP)

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