| BaTiO3:Ce自泵浦相位共轭产生机理随泵浦光斑尺寸的变化 |
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| 引用本文： | 刘继芳,李育林.BaTiO3:Ce自泵浦相位共轭产生机理随泵浦光斑尺寸的变化[J].光子学报,1998,27(3):207-211. |
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| 作者姓名： | 刘继芳 李育林 |
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| 作者单位： | 中国科学院西安光学精密机械研究所光学室 西安 710068 |
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| 摘 要： | 实验发现当光入射到晶体表面的泵浦光斑尺寸较小时,无论入射角和入射位置怎样,擦除光对相位共轭反射率没有影响,同时从上表面可观察到全内反射的光回路,所以SPPC的形成机理为FWM-TIR;当入射到晶体表面的泵浦光斑尺寸较大时,在一定的入射角和入射位置,擦除光的作用使相位共轭反射率很快减小,表明这时的SPPC的形成机理为FWM-SPB.
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| 关 键 词： | 自泵浦相位共轭 相位共轭反射率 自泵浦相位共轭机制 |
| 收稿时间： | 1997-06-04 |
MECHANISM TRANSFORMATION WITH PUMP BEAM DIAMETER OF SELF PUMPED PHASE CONJUGATION IN BaTiO3:Ce |
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| Liu Jifang,Li Yulin,Yun Zhisheng,Hu Manli,Zhang Peikun,Qiao Xueguang.MECHANISM TRANSFORMATION WITH PUMP BEAM DIAMETER OF SELF PUMPED PHASE CONJUGATION IN BaTiO3:Ce[J].Acta Photonica Sinica,1998,27(3):207-211. |
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| Authors: | Liu Jifang Li Yulin Yun Zhisheng Hu Manli Zhang Peikun Qiao Xueguang |
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| Institution: | Xi’an Institute of Optics & Precision Mechanics, Chinese Academy of Sciences, Xi’an 710068 |
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| Abstract: | We report what is to our knowledge the fist observation of mechanism transformation with pump beam diameter of self-pumped phase conjugation(SPPC)in BaTiO3:Ce crystal in the green,λ=514.5nm.It was found that the SPPC mechanism changed from a “cat”(FWM TIR)mechanism to a stimulated photorefractive backscattering and four wave mixing(FWM SPM)mechanism when the pump beam diameter was varied from 0.6mm to 3.5mm,with a transition of “cat” and FWM SPB mechanism coexit. |
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| Keywords: | Self-pumped phase conjugation Reflectivity of phase conjugation SPPC formation mechanism |
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