Subpicosecond interferometric measurement of the nonlinear refractive index of poly(3-hexylthiophene)

We measured the magnitude and the time response of the nonlinear refractive index (n(2)) of poly(3-hexylthiophene)by a femtosecond time-resolved interferometric technique. Decays of 320 fs and 3.0 ps were found. The n(2) value obtained was -6 x 10(-9) esu at 620 nm. Calculation of the dispersion of...

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Bibliographic Details
Published in:Optics letters 1992-11, Vol.17 (22), p.1560-1562
Main Authors: HATTORI, T, OKAWA, H, WADA, T, SASABE, H
Format: Article
Language:English
Subjects:
Applied sciences
Electrical, magnetic and optical properties
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
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Summary:We measured the magnitude and the time response of the nonlinear refractive index (n(2)) of poly(3-hexylthiophene)by a femtosecond time-resolved interferometric technique. Decays of 320 fs and 3.0 ps were found. The n(2) value obtained was -6 x 10(-9) esu at 620 nm. Calculation of the dispersion of n(2) showed that the negative value is consistent with that of a four-level model.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.17.001560