We report the generation of 0.3547-{μ}m radiation by tripling 1.064-{μ}m radiation in a phase-matched mixture of rubidium and xenon. We find χ(3ω)=1.4×10^-32 esu, which is about 10⁶ times greater than that of He. Phase matching occurs for Xe and Rb atoms in the ratio 412:1.
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Young et al. (1971) studied this question.
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