Abstract
Nonlinear optical (NLO) polyurethanes have been intensively studied to develop electro-optic devices, because they have not only large second-order NLO coefficients (d33) but also good temporal stability of d33 at room temperature [1,2]. We have reported that introducing urea groups into main chains of polyurethanes, namely urethane-urea copolymers, improves the temporal stability at elevated temperatures [3]. The copolymers have many advantages, for example easiness of synthesis, relatively high intrinsic viscosity [η] (molecular weight), easiness of poling process, and applicability of photobleaching method [4]. In the present work, linear and second-order nonlinear optical properties of the copolymers are discussed.
© 1997 Optical Society of America
PDF ArticleMore Like This
Naoto Tsutsumi, Osamu Matsumoto, and Wataru Sakai
ThE.5 Organic Thin Films for Photonic Applications (OTF) 1997
Y. M. Chen, A. K. M. Rahman, J. Y. Lee, T. Takahashi, B. K. Mandal, J. Kumar, and S. K. Tripathy
ThLL4 OSA Annual Meeting (FIO) 1990
James S. Shirk, Steven R. Flom, J.R. Lindle, F.J. Bartoli, Michael E. Boyle, James D. Adkins, and Arthur W. Snow
WB21.2 Organic Thin Films for Photonic Applications (OTF) 1993