Abstract

The second-order nonlinear optical susceptibilities χ⁽²⁾ of several phenylhydrazone and stilbazium salt dyes in Langmuir–Blodgett monolayers have been determined from second-harmonic-generation measurements. Three of the substances demonstrated χ⁽²⁾ values greater than 10⁻⁶ electrostatic units, although two of the three did not absorb light significantly at the second-harmonic wavelength.

© 1988 Optical Society of America

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