Author/Authors :
Maruyama، نويسنده , , Y. and Hoshi، نويسنده , , H. and Fang، نويسنده , , S.L. and Kohama، نويسنده , , K.، نويسنده ,
Abstract :
Vanadyl phthalocyanine forms an epitaxially-ordered thin films on alkali halide single crystals. The square lattice symmetry (4mm) of the 2-dimensional film structure is confirmed by the anisotropic nature of nonlinear optical effects. A unique third-harmonic-generation peak appears in the spectrum of anisotropic response and it may originate in a two-photon resonance effect which might be correlated to exciton state.
