Showing papers by "Christoph Weder published in 1994"
TL;DR: A series of NLO polyamides based on the new monomer 2',5'-diamino-4-(dimethylamino)-4'-nitrostilbene has been synthesized as discussed by the authors.
Abstract: A series of NLO polyamides based on the new monomer 2',5'-diamino-4-(dimethylamino)-4'-nitrostilbene has been synthesized. The polymers are amorphous and show T g 's up to 206°C. They can easily be processed by spin-coating into thin films of optical quality. These films have been oriented by a corona discharge poling process. Second-order nonlinear optical coefficients (d 33 ) of up to approximately 40 pm/V at a fundamental wavelength of 1542 nm have been measured. Preliminary results indicate that the orientation of the dipoles shows no significant relaxation at ambient conditions in 120 days after poling
42 citations