| 应用于流场测量的激光高频空气超声声光偏转效应 |
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| 引用本文： | 宋宙模,张彬乾,李建英,陈长乐,尚志远.应用于流场测量的激光高频空气超声声光偏转效应[J].中国激光,1995,22(9):691-694. |
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| 作者姓名： | 宋宙模 张彬乾 李建英 陈长乐 尚志远 |
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| 作者单位： | 西北工业大学应用物理系，陕西师范大学声学所 |
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| 摘 要： | 研制了适用于产生空气超声相位光栅的大功率高频超声换能器，采用位移灵敏接收器，在换能器发射面前方适当位置加声匹配器以加强声场干涉提高发射方向性，获得了明显的激光空气超声声光偏转效应。可应用于风洞试验中测量空气旋涡流场参量．
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| 关 键 词： | 激光空气声光偏转，高频空气超声换能器，空气流场测量 |
| 收稿时间： | 1994/12/7 |
Laser High Freguency Air Ultrasonic Acousto-optic Deflection Effect Used for Flow Field Measurement |
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| Song Zhoumo, Zhang Binqian, Li Jiangying, Chen Changle.Laser High Freguency Air Ultrasonic Acousto-optic Deflection Effect Used for Flow Field Measurement[J].Chinese Journal of Lasers,1995,22(9):691-694. |
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| Authors: | Song Zhoumo Zhang Binqian Li Jiangying Chen Changle |
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| Abstract: | A high power, high frequency air ultrasonic transducer used to generste air ultrasonic Phase grating is fabricated. The laser ultrasonic acousto-optic deflection has been observed clearly by using a displacement-sensitive detector and a particularly ptepated acoustic coupler setting at a proper place in front of the acoustic radiating surface of the transducer to increase the interference of acoustic field and to decrease the divergence angle of acoustic radiation. It can be applied to measure the parameters of the air vortex flow field in wind tunnel test. |
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| Keywords: | laser acousto-optic deflection in air air ultrasonic traneducer with high frequency flow field measurement |
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