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Proceedings Paper

Molecular length dependent polarizability
Author(s): Maryanne C. J. Large; Werner J. Blau; David T. Croke; Peter McWilliam; Francois Kajzar
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Paper Abstract

Electric Field Induced Second Harmonic GEneration (EFISH) and the electro-optic Kerr effect were applied to solutions of double stranded DNA, in which the average strand length varied from 2958 base pairs to 140 base pairs. This size range covers the transition from the `rod-like' model (which applies to samples < about 300 base pairs) to the `worm- like' model. In both these electro-optic measurements the electric dipole moment is primarily ionic in nature, and shows a saturating length dependence, although saturation occurred at different lengths. Saturation occurred at longer lengths for EFISH than for the Kerr effect.

Paper Details

Date Published: 1 November 1996
PDF: 8 pages
Proc. SPIE 2852, Nonlinear Optical Properties of Organic Materials IX, (1 November 1996); doi: 10.1117/12.256187
Show Author Affiliations
Maryanne C. J. Large, Trinity College Dublin (Ireland) and LETI/CEA Saclay (France)
Werner J. Blau, Trinity College Dublin (Ireland)
David T. Croke, The Royal College of Surgeons in Ireland (Ireland)
Peter McWilliam, The Royal College of Surgeons in Ireland (Ireland)
Francois Kajzar, LETI/CEA Saclay (France)


Published in SPIE Proceedings Vol. 2852:
Nonlinear Optical Properties of Organic Materials IX
Gustaaf R. Moehlmann, Editor(s)

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