Volume 72, Number 5, December 2005
|Page(s)||740 - 746|
|Section||Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics|
|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: firstname.lastname@example.org
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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