Third-order nonlinear optics of some azulenic donor-acceptor compounds

Brian R. Kimball; Masato Nakashima; Barry S. DeCristofano; Francisco J. Aranda; Devulapalli V. G. L. N. Rao; Alfred E. Asato; Robert S. H. Liu

doi:10.1117/12.328180

16 October 1998 Third-order nonlinear optics of some azulenic donor-acceptor compounds

Brian R. Kimball, Masato Nakashima, Barry S. DeCristofano, Francisco J. Aranda, Devulapalli V. G. L. N. Rao, Alfred E. Asato, Robert S. H. Liu

Author Affiliations +

Proceedings Volume 3473, Third-Order Nonlinear Optical Materials; (1998) https://doi.org/10.1117/12.328180
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

We studied the third-order nonlinear optical properties of five azulenic donor-acceptor compounds. The compounds were studied in solution in Tetrahydrofuran using backward degenerate four-wave mixing and Z-scan with 30 picosecond pulses at 532 manometer wavelength. Extrapolated values for the third-order nonlinear optical susceptibility ((chi) ⁽³)) of the solute molecules were obtained from concentration dependent measurements. The compounds possess large values of (chi) ⁽³) in the range 3 X 10^-10 esu to 3 X 10^-8 esu. The two orders of magnitude change in the magnitude of the susceptibility that we observe for this series of donor-acceptor azulenic compounds makes them interesting candidates for the study of structure property relationships in nonlinear optical chromophores. The compounds also exhibit large solvatochromism and may also prove to be useful in second-order nonlinear optical applications.

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Brian R. Kimball, Masato Nakashima, Barry S. DeCristofano, Francisco J. Aranda, Devulapalli V. G. L. N. Rao, Alfred E. Asato, and Robert S. H. Liu "Third-order nonlinear optics of some azulenic donor-acceptor compounds", Proc. SPIE 3473, Third-Order Nonlinear Optical Materials, (16 October 1998); https://doi.org/10.1117/12.328180

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