摘要We investigate the reduction of the group velocity propagation resulting from the steep change of the refractive index by the coherent population oscillation in erbium-doped optical fibre. The largest delay is measured to be about 8.75ms corresponding to a group index of 1.312×106. The time delay or advancement depends on the pump intensity. Influences of the ion density on the fractional delay and the group velocity reduction of light propagation are studied. Based on our discussion the optimization parameters should be selected in order to obtain more appropriate time delay and the slowdown of group velocity.
Abstract：We investigate the reduction of the group velocity propagation resulting from the steep change of the refractive index by the coherent population oscillation in erbium-doped optical fibre. The largest delay is measured to be about 8.75ms corresponding to a group index of 1.312×106. The time delay or advancement depends on the pump intensity. Influences of the ion density on the fractional delay and the group velocity reduction of light propagation are studied. Based on our discussion the optimization parameters should be selected in order to obtain more appropriate time delay and the slowdown of group velocity.
(Other nonlinear optical materials; photorefractive and semiconductor materials)
引用本文:
QIU Wei;ZHANG Yun-Dong;YE Jian-Bo;WANG Nan;WANG Jin-Fang;TIAN He;YUAN Ping. Slowdown of Group Velocity of Light Using Coherent Population Oscillation[J]. 中国物理快报, 2008, 25(2): 489-492.
QIU Wei, ZHANG Yun-Dong, YE Jian-Bo, WANG Nan, WANG Jin-Fang, TIAN He, YUAN Ping. Slowdown of Group Velocity of Light Using Coherent Population Oscillation. Chin. Phys. Lett., 2008, 25(2): 489-492.
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