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首页> 外文学位 >Design, fabrication and analysis of a Terfenol-D based magnetostrictive external cavity diode laser sensor with an advanced signal processing capability.
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Design, fabrication and analysis of a Terfenol-D based magnetostrictive external cavity diode laser sensor with an advanced signal processing capability.

机译：具有先进信号处理能力的基于Terfenol-D的磁致伸缩外腔二极管激光传感器的设计，制造和分析。

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摘要

Miniature magnetometer is desired in many applications, such as undersea surveillance, buried landmine detection, vehicle tracking and guidance and personal dosimetry. This dissertation reports the fabrication, and characterization of a miniature magnetometer, which utilizes the highly magnetostrictive material, Terfenol-D and an ultra-short external cavity diode laser sensor. A thin slice of the magneto strictive material, biased by an open magnetic circuit, is configured as an external reflector modulating the effective modal reflectivity of the diode laser cavity in response to an ac magnetic field. The detection limit of the sensor are being investigated and the principle of the device is being examined as an abruptly terminated dielectric waveguide problem. Numerical results are obtained. Furthermore, the spatial variation of the magnetostriction amplitude across the transducer is being examined with a heterodyne interferometer. Suggestions are provided on improving the device performance, and extending the numerical capability to account for non-ideal reflector. Other metrology applications using the diode laser sensor is discussed.
机译：微型磁力计在许多应用中都是需要的，例如海底监视，地雷探测，车辆跟踪和制导以及个人剂量测定。本论文报道了一种小型磁力计的制造和特性，该磁力计利用了高磁致伸缩材料Terfenol-D和超短外腔二极管激光传感器。由开路磁路偏置的磁致伸缩材料的薄片被配置为外部反射器，该外部反射器响应于交流磁场来调制二极管激光腔的有效模态反射率。正在研究传感器的检测极限，并且正在研究作为突然终止的介电波导问题的设备原理。获得数值结果。此外，正在使用外差干涉仪检查换能器上磁致伸缩幅度的空间变化。提供了有关改善器件性能，扩展数值能力以解决非理想反射器的建议。讨论了使用二极管激光传感器的其他计量应用。

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