Hyperfine spectroscopy on the 6P<sub>3/2</sub> state of <sup>133</sup>Cs using coherent control
D. Das; V. Natarajan; D. Das; Department of Physics, Indian Institute of Science - Bangalore 560 012, India; V. Natarajan; Department of Physics, Indian Institute of Science - Bangalore 560 012, India
Журнал:
EPL (Europhysics Letters)
Дата:
2005-12-01
Аннотация:
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 D<sub>2</sub> line of <sup>133</sup>Cs 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 6P<sub>3/2</sub> state with an accuracy of 6 kHz. The measurement is important because there is a large discrepancy between two earlier measurements on this state.
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