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13 October 1997 Role of chiral symmetry in second-order nonlinear optical materials
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We have used second-harmonic generation as a technique to examine different types of chiral materials. All materials investigated showed large circular-difference effects in the second-harmonic response, i.e., the efficiency of the process was different for left- and right-hand circularly-polarized light. Study of various chiral materials has shown that a different quantitative and qualitative response can be expected depending on the composition and structure. In addition, we have demonstrated the existence of magnetic-dipole coniributions to the nonlinearity of those materials.
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Sven Van Elshocht, Thierry Verbiest, Martti Kauranen, R. J. M. Nolte, E. W. Meijer, and Andre P. Persoons "Role of chiral symmetry in second-order nonlinear optical materials", Proc. SPIE 3147, Nonlinear Optical Properties of Organic Materials X, (13 October 1997);

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