THE OFF-RESONANT 3RD-ORDER OPTICAL NONLIN EARITIES OF SOLUBLE VANADYLPHTHALOCYANINES

Soluble vanadyl phthalocyanines with different substituents and substi tuted in different position were synthesized. 10(-31) esu and 10(-10) similar to 10(-9) esu order of magnitude of off - resonant third - ord er hyperpolarizability [gamma] and chi((3)) values for them were measu red, respectively, by degerate four - wave mixing. It is found that th e [gamma] value is depended on the nature of the substituents. The str onger the electron - donating ability of substituent, the larger the [ gamma] value. However, the substituting position has only little effec t on the [gamma] value.