Study of the Reverse Saturate Absorption in Copper Phthalocyanine Solution

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The nonlinear absorption (NLA) properties of copper phthalocyanine (CuPc) acetone solution were investigated by femtosecond open-aperture (OA) Z-scan technique. The reverse saturable absorption (RSA) was observed, and it was found that the RSA effect was origin from three-photon absorption. Moreover, the influences of concentration and excitation laser power on the NLA of CuPc solution are studied. Results show that the RSA effect increases with the increase of sample concentration and excitation laser power. It indicates that the CuPc could be a promising candidate for optical limiting material.

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165-170

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October 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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DOI: 10.1109/3.53394

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