Nonlinear optical parameters of 7', 7'-dicyano-7'-apo-β-carotene in hexane by self-action techniques

Quantitative measurements of the nonlinear refractive index coefficient ( n 2 and the third-order nonlinear susceptibility (χ (3)) for a solution of 7',7'-dicyano-7'-apo-β-carotene (DCAC) in hexane have been measured at different concentrations. The measurements have been performed by...

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Bibliographic Details
Published in:Optics communications 1993-01, Vol.95 (4), p.295-300
Main Authors: Abdeldayem, Hossin A., Sheng, Wen, Venkateswarlu, P., Witherow, William K., Frazier, Don O., Chandra, P., George, M.C., Kispert, Lowell, Wasielewski, Michael R.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Nonlinear optics
Optics
Physics
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Summary:Quantitative measurements of the nonlinear refractive index coefficient ( n 2 and the third-order nonlinear susceptibility (χ (3)) for a solution of 7',7'-dicyano-7'-apo-β-carotene (DCAC) in hexane have been measured at different concentrations. The measurements have been performed by both the self-trapping and self-phase modulation techniques using a cw Ar + laser. The results show that DCAC has a relatively large nonlinearity, attributed to a thermal mechanism, with n 2 of the order of 10 9 times that of CS 2.
ISSN:0030-4018
1873-0310
DOI:10.1016/0030-4018(93)90681-T