The nonlinear optical response of a fluorine-containing azoic dye |
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Authors: | Tingjian Jia Zhiguo Shang |
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Affiliation: | a Department of Physics and Information Engineering, Shangqiu Normal University, Shangqiu 47600, China b The Graduate University for Advanced Studies, Myodaiji, Okazaki 444-8585, Japan c Department of Mathematical and Physical Science, Henan Institute of Engineering, Zhengzhou 450007, China |
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Abstract: | The nonlinear optical nonlinearities of a fluorine-containing azoic dye in tetrahydrofuran have been investigated by using Z-scan technique with picosecond and nanosecond lasers. The experimental results reveal that the azoic dye has large optical nonlinearity under the excitations of picosecond and nanosecond 532 nm. At the picosecond 532 nm the solution presents negative nonlinear refraction due to the electronic effect, while the larger nonlinear refraction under nanosecond laser excitation is induced by thermal effect. Moreover, the different nonlinear absorption behavior under picosecond and nanosecond excitations is analyzed. |
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Keywords: | Fluorine-containing azoic dye Electronic effect Thermal effect Intersystem crossing |
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