| Issue |
Europhys. Lett.
Volume 72, Number 5, December 2005
|
|
|---|---|---|
| Page(s) | 740 - 746 | |
| Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
| DOI | https://doi.org/10.1209/epl/i2005-10305-x | |
| Published online | 28 October 2005 | |
Hyperfine spectroscopy on the 
state of 
using coherent control
Department of Physics, Indian Institute of Science - Bangalore 560 012, India
Corresponding author: vasant@physics.iisc.ernet.in
Received:
29
July
2005
Accepted:
4
October
2005
We show that coherent-control techniques are uniquely
suited for high-resolution hyperfine spectroscopy. We apply
this method to a V-type system in the D2 line of
The spectrum of a weak probe beam shows
Doppler-free transparency peaks when the strong control
beam is resonant with a neighboring hyperfine transition.
The lineshape and linewidth are consistent with theoretical
calculations. Using an acousto-optic modulator to calibrate
the frequency of the control beam, we measure hyperfine
intervals in the 
state with an accuracy of 6
kHz. The measurement is important because there is a large
discrepancy between two earlier measurements on this state.
PACS: 42.50.Gy – Effects of atomic coherence on propagation, absorption, and amplification of light; electromagnetically induced transparency and absorption / 32.10.Fn – Fine and hyperfine structure / 39.30.+w – Spectroscopic techniques
© EDP Sciences, 2005
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