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首页> 外文期刊>Key Engineering Materials >Non-contact Single-Mode Guided Wave Technique by the Combination of Wavelength-Matched Laser Generation and Angle-Matched Leak Wave Detection
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Non-contact Single-Mode Guided Wave Technique by the Combination of Wavelength-Matched Laser Generation and Angle-Matched Leak Wave Detection

机译：波长匹配的激光产生与角度匹配的泄漏波检测相结合的非接触式单模导波技术

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摘要

This paper proposes a non-contact single-mode guided wave technique, where the laser beam illuminated through the arrayed line slits is used as the transmitter, and the air-couple transducer is used as the receiver. The line-arrayed laser illumination has a wavelength-matching effect that can generate only a few modes. The air-coupled transducer detects the leaky wave of the propagated guided wave, and by tuning the detection angle of the transducer we can detect the selected single mode. The proposed technique is fully non-contact and is possible to avoid difficulty in the mode identification. The experimental results for a 1-mm thick aluminum plate prove the usefulness of the proposed method, and most especially, it shows that the method is powerful in the generation and detection of anti-symmetric modes of the lowest order.
机译：本文提出了一种非接触式单模导波技术，其中通过排列的线缝照射的激光束用作发射器，而空气耦合换能器用作接收器。线阵激光照明具有只能产生几种模式的波长匹配效应。空气耦合换能器检测传播的导波的泄漏波，并且通过调整换能器的检测角度，我们可以检测所选的单模。所提出的技术是完全非接触的，并且可以避免模式识别的困难。 1毫米厚铝板的实验结果证明了该方法的有效性，最重要的是，它表明该方法在生成和检测最低阶反对称模式方面具有强大的功能。

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