Noncollinear phase matched four photon frequency mixing in water |
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Authors: | A Penzkofer J Kraus J Sperka |
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Institution: | Naturwissenschaftliche Fakultät II - Physik, Universität Regensburg, 8400 Regensburg, Fed. Rep. Germany |
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Abstract: | An intense ultraviolet picosecond light pulse at ωS = 2γP ? ωL is generated in water by noncollinear phase matched nonresonant four photon frequency mixing of two input picosecond light pulses at frequencies ν~P = 18 960 cm-1 and ν~L = 9480 cm-1. An energy conversion of up to WS/WL = 0.07 was achieved. The nonlinear susceptibility components were determined to be χ(3)yyyy(?ωS; ωP, ωP, ? ωL) = 7.5 × 10-34 Cm/V3 and χ(3)yxxy(?ωS; ωP, ωP, ?ωL) = 2.4 × 10-34 Cm/V3. |
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