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Pyroelectric PVDF sensor modeling of the temporal voltage response to arbitrarily modulated radiation

机译:热电PVDF传感器对任意调制辐射的时间电压响应的建模

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Our design of transducer arrays for custom pyroelectric sensors is mainly devoted to IR laser beam characterization and control. It benefits from some of the properties of PVDF film such as low cost, low weight, mechanical flexibility, chemical stability (inert), and compatibility of thick film interconnection technologies on metallized films. By using the temporal characteristics of the source intensity and starting from a standard equivalent one-dimensional model of a multilayer thick-film transducer in the frequency domain, we developed a computer model of the PVDF sensor that determines the temporal response to arbitrarily modulated radiation. The validation of the model accuracy has been carried out with a simulation procedure performed on a PVDF sensor designed for accurate beam alignment of low power laser beams. In this case, an iterative algorithm also was developed to estimate some thermal and physical properties of the front absorbing and the metallization layers that are generally barely known. We present a fitting procedure to determine these properties by using the temporal pyroelectric response to a square wave modulated laser diode that provides a reliable reference signal.
机译:我们为定制热释电传感器设计的换能器阵列主要致力于红外激光束的表征和控制。它得益于PVDF薄膜的某些特性,例如低成本,重量轻,机械柔韧性,化学稳定性(惰性)以及厚膜互连技术在金属化薄膜上的兼容性。通过使用源强度的时间特性,并从频域中多层厚膜换能器的标准等效一维模型开始,我们开发了PVDF传感器的计算机模型,该模型确定了对任意调制辐射的时间响应。模型精度的验证已通过针对PVDF传感器执行的仿真程序进行了设计,该传感器设计用于低功率激光束的精确光束对准。在这种情况下,还开发了一种迭代算法来估计通常鲜为人知的前吸收层和金属化层的一些热和物理性质。我们提出一种适合的程序,通过使用对提供可靠参考信号的方波调制激光二极管的时间热释电响应来确定这些属性。

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