Enhanced four-wave mixing by atomic coherence in a Pr[sup 3+]:Y[sub 2]SiO[sub 5] crystal

Hai-Hua Wang, Dun-Mao Du, Yun-Fei Fan, Ai-Jun Li, Lei Wang et al.
We experimentally demonstrate an enhanced four-wave mixing (FWM) based on atomic coherence in a Pr:YSiO crystal. By employing coherent population return and fractional stimulated Raman adiabatic passage to prepare maximum atomic coherence in the crystal, an efficient FWM signal can be generated. By ... [Appl. Phys. Lett. 93, 231107 (2008)] published Tue Dec 9, 2008.
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