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Negative Third Order Optical Susceptibilities of Squaraines

Published online by Cambridge University Press:  16 February 2011

R. F. Shi ,
Q. L. Zhou  and
A. F. Garito
R. F. Shi
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
Q. L. Zhou
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
A. F. Garito
Affiliation:
Department of Physics, University of Pennsylvania, Philadelphia, PA 19104
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Abstract

Quantum Many-electron calculations based on Multiple-excited configuration interaction have been implemented on squaraine Molecules. It is found that certain squaraines possess negative third order optical susceptibilities (γ) even in the zero frequency limit. Our calculations agree well with the experimental results obtained by Dirk and co-workers[1] for anilinium squarylium (BSQ) in terms of the sign and Magnitude. High-lying two-photon states in squaraines are found to be always critically important. The sign of γ is found to depend on the electron donating ability of the two side groups in squaraines.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 328: Symposium Q – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials , 1993 , 643
Copyright
Copyright © Materials Research Society 1994

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References

REFERENCES

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