Kai-Erik PEIPONEN,¹ Erik M. VARTIAINEN² and Toshimitsu ASAKURA^3,*

¹Väisälä Laboratory, Department of Physics, University of Joensuu, P.O. Box 111, Finland, ²Department of Physics, Lappeenranta University of Technology, P.O. Box 20, Fin-53851, Finland, ³Research Institute for Electronic Science, Hokkaido University, Sapporo, 060 Japan

(Received April 18, 1997; Accepted May 19, 1997)

Dispersion theory of linear and nonlinear susceptibilities are considered with the aid of complex analysis.

Key words : dispersion theory, optical spectroscopy, complex analysis, linear optics, nonlinear optics

*asakura@hikari.hokudai.ac.jp   asakura@eli.hokkai-s-u.ac.jp