Improved poling and thermal stability of solhyphen;gel nonlinear optical polymers

摘要

An aminosulfone dye chromophore was covalently incorporated into a solhyphen;gel network for secondhyphen;order nonlinear optics applications by functionalizing both ends of the chromophore. Covalent incorporation allows for high chromophore loading densities (sim;35percnt;) and locking in both ends of the chromophore improves thermal stability. Short term stability of the nonlinearity at 200thinsp;deg;C and long term stability over 500 h at 100thinsp;deg;C was demonstrated. Two different temperature profiles for corona poling were investigated and one found superior to the other. A second harmonic coefficient,d33of 27 pm/V at the 1064 nm fundamental wavelength was measured. copy;1994 American Institute of Physics.