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INSTITUTE OF PHYSICS PUBLISHING JOURNAL OF PHYSICS B: ATOMIC, MOLECULAR AND OPTICAL PHYSICS J. Phys. B: At. Mol. Opt. Phys. 34 (2001) 38893898 PII: S0953-4075(01)23132-0
 

Summary: INSTITUTE OF PHYSICS PUBLISHING JOURNAL OF PHYSICS B: ATOMIC, MOLECULAR AND OPTICAL PHYSICS
J. Phys. B: At. Mol. Opt. Phys. 34 (2001) 38893898 PII: S0953-4075(01)23132-0
Reverse dark resonance in Rb excited by a diode laser
Janis Alnis and Marcis Auzinsh
Department of Physics, University of Latvia, 19 Rainis Boulevard, Riga, LV-1586, Latvia
Received 20 March 2001, in final form 20 July 2001
Published 5 October 2001
Online at stacks.iop.org/JPhysB/34/3889
Abstract
The origin of recently discovered reverse (opposite-sign) dark resonances has
been explained theoretically and verified experimentally. It is shown that the
reason for these resonances is a specific optical pumping of the ground state
magnetic sublevel in a transition when the ground state angular momentum
is smaller than the excited state momentum. An experiment was conducted
on 85
Rb atoms in a cell, when a diode laser using the ground state hyperfine
level Fg = 3 simultaneously excites spectrally unresolved hyperfine levels
with total angular momentum quantum numbers Fe = 2, 3 and 4. It is shown
that due to differences in the transition probabilities the dominant role in total
absorption and fluorescence signals is played by absorption on a transition

  

Source: Auzinsh, Marcis - Department of Physics, University of Latvia

 

Collections: Physics