Abstract

Picosecond chirped-pulse technology is used to generate two spectrally separate, time-synchronized pulses for χ⁽³⁾ measurements by nearly degenerate four-wave mixing. Near 1053 nm, nonresonant relative measurements of ${\chi }_{1111}^{(3)}$ are carried out on three model substances, nitrobenzene, α-chloronaphthalene, and 4′-decyloxynaphthyl-1′-(4-decyloxybenzoate). Their χ⁽³⁾ values are normalized to CS₂.

© 1991 Optical Society of America

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