Abstract
Resonantly enhanced second-harmonic generation in atomic hydrogen was investigated near 121.6 nm. With the application of a dc electric field, it is shown that coupling of the 2s and 2p states produces resonantly enhanced nonlinear susceptibility and reduced absorption at the second-harmonic wavelength, resulting in an increased net efficiency of the second-harmonic-generation process.
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More From: Physical review. A, Atomic, molecular, and optical physics
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