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Proceedings Paper

Dispersion of the molecular second-order nonlinear optical susceptibilities of nitropyridine derivatives
Author(s): Christian Bosshard; Guenter Knoepfle; Philippe Pretre; Peter Guenter
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Paper Abstract

Molecular second-order nonlinear optical properties of a series of interesting nitropyridine derivatives, namely 2-cyclooctylamino-5-nitropyridine (COANP), 2-docosylamino-5- nitropyridine (DCANP), and 2-(N-prolinol)-5-nitropyridine (PNP) were investigated with two different methods: electric field-induced second-harmonic generation (EFISH) and a solvatochromic method. Both techniques yield the same values within the experimental errors, showing that the main contribution of the microscopic nonlinearity arises from a single intramolecular charge transfer transition. The measured values were shown to follow the theoretical two-level dispersion. A comparison of the hyperpolarizabilities and the macroscopic nonlinear optical coefficients shows a good quantitative agreement. This illustrates that intramolecular contributions are the main source for the large nonlinear optical responses observed in these crystals.

Paper Details

Date Published: 25 February 1993
PDF: 11 pages
Proc. SPIE 1775, Nonlinear Optical Properties of Organic Materials V, (25 February 1993); doi: 10.1117/12.139196
Show Author Affiliations
Christian Bosshard, Swiss Federal Institute of Technology (Switzerland)
Guenter Knoepfle, Swiss Federal Institute of Technology (Switzerland)
Philippe Pretre, Swiss Federal Institute of Technology (Switzerland)
Peter Guenter, Swiss Federal Institute of Technology (Switzerland)

Published in SPIE Proceedings Vol. 1775:
Nonlinear Optical Properties of Organic Materials V
David J. Williams, Editor(s)

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