Saturable and reverse saturable absorption of a linear polymer in dimethylformamide |
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Authors: | Y Gao Q Chang H Ye W Jiao Y Song Y Wang J Qin |
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Institution: | (1) State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing, 100871, P.R. China |
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Abstract: | An all-optical tunable narrow-band filter with an ultrafast response time of 10 ps is realized in a two-dimensional nonlinear
polystyrene photonic crystal. The pump and probe scheme is adopted to measure tunability based on the picosecond optical Kerr
effect. The passband of the photonic crystal filter shifts about 4 nm under excitation of 14.7 GW/cm2 pump intensity, which is in agreement with the theoretical prediction.
PACS 42.70.Qs; 61.46.+w; 81.15.-z |
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