H. Looser, W.P. Risk, et al.
QELS 1989
Optical third-harmonic generation was used to measure third-order nonlinear susceptibilities χ(3) for thin films of planar zigzag polysilanes and polygermanes. A χ(3) of 11.3×10 -12 esu was measured, the largest value ever reported for a polymer with transparency throughout the visible. The value of χ(3) was found to vary substantially with thermally induced reversible changes in polymer backbone conformation and also with film thickness.
H. Looser, W.P. Risk, et al.
QELS 1989
T.C. Huang, R. Karimi, et al.
Powder Diffraction
Chr. Bräuchle, D.M. Burland, et al.
JACS
W. Zapka, P. Pokrowsky, et al.
Optics Communications