Phys. Rev. Lett. 84, 5308–5311 (2000)Efficient Nonlinear Frequency Conversion in an All-Resonant Double- Λ SystemReceived 3 February 2000; published in the issue dated 5 June 2000 We demonstrate efficient, pulsed, gas-phase, nonlinear frequency conversion in a quadruply resonant, double- Λ system and, simultaneously, verify theoretical predictions of Rabi-frequency matching unique to absorbing nonlinear media. This system is used to up-convert ultraviolet light at 233 nm to the vacuum ultraviolet at 186 nm in atomic Pb vapor with small-signal conversion efficiencies exceeding 30% and with modest atomic density-length (NL) products (scale 1014cm-2) and optical power densities (10–100kW/cm2). © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.5308
DOI:
10.1103/PhysRevLett.84.5308
PACS:
42.50.Gy, 42.50.Hz, 42.65.Ky, 42.79.Nv
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