کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1541624 | 996689 | 2007 | 7 صفحه PDF | دانلود رایگان |
Third order nonlinear optical susceptibility (χ〈3〉) of metallophthalocyanines (MPcs, where M = Co, Cu, Zn, Mg) thin films and solutions was investigated by standard backward degenerate four wave mixing (DFWM) method at 532 nm. Third harmonic generation (THG) measurement at 1064 nm performed on MPcs thin films is also discussed. MPcs thin films were grown by conventional thermal evaporation in high vacuum and solution were dissolved in tetrahydrofuran (THF), in which the studied materials are soluble. In the case of microscopic nonlinearity, we calculated the second order hyperpolarizability (γ) for MPcs solutions. We found that the χ〈3〉 and the γ values are affected by the nature of the central metal atom. We also found that the χDFWM〈3〉 value is larger than that measured via THG experiment. The variation in χ〈3〉 values occurs due to the different resonance contributions.
Journal: Optics Communications - Volume 274, Issue 1, 1 June 2007, Pages 206–212