초록 close

The nonlinear optical properties of 1,3,5-tricyano-2,4,6-tri (p-diethylaminostyryl) benzene (TTB) thin lms have been measured by using third-harmonic generation (THG) at the fundamental wavelength of 1064 nm. By comparing the THG intensity with that of fused silica, we estimated the third-order electrical susceptibility of the organic lm to be 1.2  1011 esu, which is about 400 times larger than that of fused silica glass. Due to the unique properties of the TTB lms, such as anomalous dispersion and small re-absorption of the third harmonic wave, a thick lm is expected to give a more ecient THG, which can be applied to ultrafast optical correlators.


The nonlinear optical properties of 1,3,5-tricyano-2,4,6-tri (p-diethylaminostyryl) benzene (TTB) thin lms have been measured by using third-harmonic generation (THG) at the fundamental wavelength of 1064 nm. By comparing the THG intensity with that of fused silica, we estimated the third-order electrical susceptibility of the organic lm to be 1.2  1011 esu, which is about 400 times larger than that of fused silica glass. Due to the unique properties of the TTB lms, such as anomalous dispersion and small re-absorption of the third harmonic wave, a thick lm is expected to give a more ecient THG, which can be applied to ultrafast optical correlators.