| Issue |
Europhys. Lett.
Volume 67, Number 1, July 2004
|
|
|---|---|---|
| Page(s) | 35 - 41 | |
| Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
| DOI | https://doi.org/10.1209/epl/i2003-10274-0 | |
| Published online | 01 June 2004 | |
Observation of narrow fluorescence from doubly driven four-level atoms at room temperature
Raman Research Institute - Sadashivnagar, Bangalore, 560 080 India
Received:
4
November
2003
Accepted:
28
April
2004
Unusually narrow spectral features are seen in fluorescence peaks
from 
atoms under the action of two driving laser
fields that are in a three-dimensional molasses configuration.
One of the lasers, L1, is held at a fixed detuning from the
“cooling” transition, while the other, L2, is scanned across the
“repumping” transitions. The fluorescence peaks are split into
symmetric pairs, with the separation within a pair increasing
with the detuning of the L1 laser. For large detunings,
additional small peaks are seen. A simple model is proposed to
explain these experimental observations.
PACS: 42.50.Gy – Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption / 32.70.Jz – Line shapes, widths, and shifts
© EDP Sciences, 2004
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