基于Bragg衍射的多频声光衍射效应研究
Research on Bragg diffraction-based multi-frequency acoustooptic diffraction effects
多频声光衍射 耦合波方程 交叉调制 互调强度 衍射效率 multifrequency acoustooptic diffraction coupled wave formula cross modulation intermodulation intensity diffraction efficiency
摘要
文章首先介绍多频声光衍射的原理, 然后推导Bragg声光介质的声光衍射耦合波方程, 并结合该声光波矢量的分析, 定量和定性地讨论了衍射效率、波矢量失配和三阶互调等多频衍射效应。实验表明, 各种效应都能很好地与Bragg理论极限相吻合。
Abstract
In this paper, the principle of multifrequency acoustooptic diffraction is first introduced. Then, the accoustooptic diffraction coupling wave formula is deduced and in combination with the analysis of its vectors, the multifrequency acoustooptic diffraction effects, such as diffraction efficiency, wave vector mismatch and 3rd-order intermodulation, are quantitatively and qualitatively analyzed. Experimental results show that all these effects are in good agreement with the Bragg theoretical limits.
高新朝, 陈名松, 谢晨, 蒋红艳. 基于Bragg衍射的多频声光衍射效应研究[J]. 光通信研究, 2009, 35(3): 51. Gao Xinchao, Chen Mingsong, Xie Chen, Jiang Hongyan. Research on Bragg diffraction-based multi-frequency acoustooptic diffraction effects[J]. Study On Optical Communications, 2009, 35(3): 51.
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