Nonlinear optical studies of a fluorinated poled polyimide guest-host system

Publisher Website
Google Scholar
Abstract
We report on poling of a low dielectric constant preimidized fluorinated fully aromatic guest‐host polyimide nonlinear optical material including thermal stability of optical nonlinearities and waveguiding properties. We measured a second‐harmonic coefficient (d33=4.9±0.5 pm/V at 1217 nm fundamental wavelength) which is accurately predicted by a thermodynamic model of poled polymers. The optical nonlinearity of a poled sample was thermally stable at 80 °C for over 300 h. Films were observed to have negative birefringence. Optical losses for slab waveguides in lowest order TE and TM modes were ≥7.7 dB/cm for doped waveguides at 800 nm wavelength and increased after poling.