Third-harmonic generation performance of organic polymer films doped with triphenylmethane derivative dyes
We report on third-order nonlinear properties of triphenylmethane derivative dyes by measuring third-harmonic generation (THG) for fundamental wavelengths within the range 1100–1800 nm. Our studies show that the triphenylmethane dyes Crystal Violet and Ethyl Violet, with a multidirectional charge tr...
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Published in | Optical materials Vol. 29; no. 6; pp. 636 - 641 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.02.2007
Elsevier Science |
Subjects | |
Online Access | Get full text |
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Summary: | We report on third-order nonlinear properties of triphenylmethane derivative dyes by measuring third-harmonic generation (THG) for fundamental wavelengths within the range 1100–1800
nm. Our studies show that the triphenylmethane dyes Crystal Violet and Ethyl Violet, with a multidirectional charge transfer in their three-fold symmetry structure (octupolar dimensionality), exhibit a third-order nonlinear susceptibility of the order
χ
(3)
∼
10
−12 esu when are used as dopants in polymer films. These films, with low residual absorption and anomalous refractive index dispersion for harmonic wavelengths, exhibit efficient THG as a bulk effect. The films are good candidates for ultra-fast optical correlators. |
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ISSN: | 0925-3467 1873-1252 |
DOI: | 10.1016/j.optmat.2005.11.010 |