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Proceedings Paper

Enhancement of the third-order susceptibility of cis-Mo(CO4 (PPh3)2 solution by oxygen in different solvents
Author(s): Wenfang Sun; Clare C. Byeon; Michael M. McKerns; Christopher M. Lawson; J. Michael Dunn; M. Hariharasarma; Gary M. Gray
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Paper Abstract

Detailed degenerate four wave mixing (DFWM) studies of one molybdenum complex, cis-Mo(CO)4(PPh3)2 in dichloromethane (CH2Cl2) and tetrahydrofuran (THF) are reported in this paper. Upon exposure to air/oxygen, the (chi) (3) values of CH2Cl2 and THF solutions of this complex increase dramatically with time. However, when excess free ligand is added to CH2Cl2 solution of the complex, the increase in (chi) (3) value is stopped. Hence, it is possible to obtain a CH2Cl2 solution with high (chi) (3) value by first oxidizing the solution and then adding excess ligand to stabilize the solution. For THF solution, probably due to the different mechanism causing the increase of (chi) (3) values, the increase in (chi) (3) values doesn't stop even though excess free ligand is added. Further, the increase in the (chi) (3) values of both the CH2Cl2 and THF solutions parallels the increase in the linear absorption but it is unclear whether the increased linear absorption plays any role in the increase in the (chi) (3) value of the solution. This study also shows how degenerate four wave mixing can be used as a very sensitive technique to detect the chemical change in a solution when the third order optical nonlinearities of the reactant and product are very different.

Paper Details

Date Published: 12 October 1998
PDF: 8 pages
Proc. SPIE 3472, Nonlinear Optical Liquids for Power Limiting and Imaging, (12 October 1998); doi: 10.1117/12.326878
Show Author Affiliations
Wenfang Sun, Univ. of Alabama/Birmingham (United States)
Clare C. Byeon, Univ. of Alabama/Birmingham (United States)
Michael M. McKerns, Univ. of Alabama/Birmingham (United States)
Christopher M. Lawson, Univ. of Alabama/Birmingham (United States)
J. Michael Dunn, Univ. of Alabama/Birmingham (United States)
M. Hariharasarma, Univ. of Alabama/Birmingham (United States)
Gary M. Gray, Univ. of Alabama/Birmingham (United States)

Published in SPIE Proceedings Vol. 3472:
Nonlinear Optical Liquids for Power Limiting and Imaging
Christopher M. Lawson, Editor(s)

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