| 声光调制器换能器阵列远场声束特性研究 |
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| 引用本文： | 霍雷,曾晓东,冯喆珺,曹长庆,李彬.声光调制器换能器阵列远场声束特性研究[J].压电与声光,2011,33(5). |
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| 作者姓名： | 霍雷 曾晓东 冯喆珺 曹长庆 李彬 |
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| 作者单位： | 西安电子科技大学技术物理学院,西安陕西,710071 |
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| 基金项目： | 国家“八六三”计划基金资助项目(2006AA12Z144) |
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| 摘 要： | 根据亥姆霍兹方程的远场解,为使声光调制器(AOM)换能器在输出平面上声压输出的分布模式较好,衍射光能的传输特性更好,该文研究并提出了换能器的远距离分布模型.基于该理论模型,仿真分析了远场声束截面声强分布、传输中心轴声强分布及声束束宽等换能器相关特性,并利用计算激光衍射效率的方案进行实验验证.实验表明,测试数据与该理论模型吻合,在90％的能量区域内,理论模型拟合测试数据的误差低于5％,实验条件下声光晶体在2.08 mm≤z≤3.43 mm(z为晶体中传输距离)范围内具有最佳模式转化效率.利用此模型可确定声光器件中晶体最优衍射率区域.
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| 关 键 词： | 压电换能器阵列 远距离分布模型 声强分布 传输特性 |
Study on the Far-field Acoustic Beam Characteristics of Transducer Array of Acousto-optic Modulator |
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| HUO Lei,ZENG Xiaodong,FENG Zhejun,CAO Changqing,LI Bin.Study on the Far-field Acoustic Beam Characteristics of Transducer Array of Acousto-optic Modulator[J].Piezoelectrics & Acoustooptics,2011,33(5). |
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| Authors: | HUO Lei ZENG Xiaodong FENG Zhejun CAO Changqing LI Bin |
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| Affiliation: | HUO Lei,ZENG Xiaodong,FENG Zhejun,CAO Changqing,LI Bin(School of Technical Physics,Xidian University,Xi'an 710071,China) |
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| Abstract: | The far-field solution based on the Helmholtz equation was studied and the far distance distribution model of the transducer was proposed to make the acousto-optic modulator(AOM) transducer realize a better distribution mode in the output plane and to make the diffraction light get better transmission characteristic.Based on the theoretical model,the simulation analysis of the far field sound intensity beam distribution of the transducer section,the sound intensity distribution of the transmission center ax... |
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| Keywords: | array of piezoelectric transducer long-distance distribution model distribution of sound intensity transmission characteristics |
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