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Quadratic nonlinear optical susceptibility of helical polymers
Author(s) -
Lalov I. J.,
Atanasov R. D.
Publication year - 1994
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.360340702
Subject(s) - overtone , anharmonicity , chemistry , quadratic equation , polymer , nonlinear system , molecular physics , vibration , nonlinear optical , spectroscopy , computational chemistry , chemical physics , spectral line , physics , condensed matter physics , quantum mechanics , organic chemistry , geometry , mathematics
The quadratic nonlinear optical susceptibility of a solution of helical polymers and of samples with helices oriented parallel to each other is calculated for regions of characteristic vibrations and of their overtones. The important role of electrooptical and of mechanical anharmonicity for exhibition of overtones in nonlinear spectroscopy is shown. The possibility of the appearance of the giant polarizabilities near bound overtone states is analyzed. The overtone spectrum of amide I is modeled numerically. © 1994 John Wiley & Sons, Inc.