Efficient Raman Sideband Generation in a Coherent Atomic Medium

Details Efficient Raman Sideband Generation in a Coherent Atomic Medium Efficient Raman Sideband Generation in a Coherent Atomic Medium

2000-06-21

arxiv.org/abs/quant-ph/0006096v1

Physics

Quantum Physics

7 pages, 6 figures

Scientific paper

10.1103/PhysRevA.63.013802

We demonstrate the efficient generation of Raman sidebands in a medium coherently prepared in a dark state by continuous-wave low-intensity laser radiation. Our experiment is performed in sodium vapor excited in $\Lambda $ configuration on the D$_{1}$ line by two laser fields of resonant frequencies $\omega_{1}$ and $\omega_{2}$, and probed by a third field $% \omega_{3}$. First-order sidebands for frequencies $\omega_{1}$, $\omega_{2}$ and up to the third-order sidebands for frequency $\omega_{3}$ are observed. The generation starts at a power as low as 10 microwatt for each input field. Dependencies of the intensities of both input and generated waves on the frequency difference ($\omega_{1}-\omega_{2}$), on the frequency $\omega_{3}$ and on the optical density are investigated.

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