Phys. Rev. Lett. 77, 4326–4329 (1996)Efficient Nonlinear Frequency Conversion with Maximal Atomic CoherenceReceived 14 June 1996; published in the issue dated 18 November 1996 We demonstrate efficient nonlinear frequency conversion in atomic Pb vapor under conditions where the linear susceptibility and the effective nonlinear susceptibility are of the same order. This is accomplished by using electromagnetically induced transparency to prepare a near-maximal atomic coherence on a Raman transition. This strongly driven transition is used to convert an intense laser beam from 425 to 293 nm with an efficiency of ∼40%. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.77.4326
DOI:
10.1103/PhysRevLett.77.4326
PACS:
42.79.Nv, 42.50.Gy, 42.50.Hz, 42.65.Ky
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