激光与光电子学进展, 2015, 52 (8): 081901, 网络出版: 2015-07-23  

双掺Mg∶Fe∶LN中大入射角度对晶格衍射效率的影响

vInfluence of Large Incidence Angle on Diffraction Efficiency of Photonic Lattices in Double Doped Mg∶Fe∶LN Crystals
作者单位
内蒙古师范大学物理与电子信息学院, 内蒙古 呼和浩特 010022
摘要
为了提高光诱导小周期光子晶格的衍射效率,采用双掺Mg∶Fe∶LN 晶体写入一维光子晶格时,通过改变双光束之间的夹角,控制写入晶格的周期,记录不同写入角度衍射效率随时间的变化。实验结果表明:双掺Mg∶Fe∶LN 晶体衍射效率在双光束夹角超过24°后急速下降,二次谐波引起的光强振荡增大了光子晶格的衍射效率,双光束夹角越大振荡出现的时间越快。
Abstract
In order to improve the diffraction efficiency of light-induced little-period photonic lattices, the periods of written photonic lattice are controled and the diffraction efficiency curve varying with writing time in different angles is recorded by changing the angle between two induced beams when writing one-dimensional photonic lattice in double doped Mg∶Fe∶LN crystal. The results show that the diffraction efficiency of double doped Mg∶Fe∶LN crystal drops sharply when the angle between two induced beam is more than 24°. The intensity oscillation caused by second harmonic increases the diffraction efficiency of photonic lattices. Greater angle between two induced beam makes shorter time of intensity oscillation.
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李强, 杨立森, 施慧渊, 王龙飞, 武一洁. 双掺Mg∶Fe∶LN中大入射角度对晶格衍射效率的影响[J]. 激光与光电子学进展, 2015, 52(8): 081901. Li Qiang, Yang Lisen, Shi Huiyuan, Wang Longfei, Wu Yijie. vInfluence of Large Incidence Angle on Diffraction Efficiency of Photonic Lattices in Double Doped Mg∶Fe∶LN Crystals[J]. Laser & Optoelectronics Progress, 2015, 52(8): 081901.

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