Observation of superluminal and slowdown light propagation in doped lithium niobate crystals |
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| Authors: | Feng Gao Haijun Qiao Qiang Wu Yin Xu Guoquan Zhang |
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| Affiliation: | TEDA Applied Physics School, Nankai University, Tianjin 300457, PR China Photonics Center, Nankai University, Tianjin 300071, PR China |
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| Abstract: | We investigate the group velocity of light in a one-dimensional volume grating inside lithium niobate crystals doped with different impurities. The superluminal and slowdown light propagations are both observed in the crystals. The relationships between the group refractive index and the grating amplitude and phase shift are presented and discussed. |
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| Keywords: | 42.25.Fx 42.40.Eq 42.25.Gy 42.40.Lx 42.40.Pa |
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