Sensors based on surface plasmon resonance present attractive features for the detection of narrow acoustic pulses since they can behave as quasi-point detectors. In order to detect fast ultrasound pressure waves, the system senses the intensity of the reflected beam for a fixed angle of incidence and for a fixed wavelength. Therefore, optimal conditions for Kretschmann's glass-metal-water configuration are presented. Optimization is performed by means of numerical simulations of the reflectivity curves for different low-cost metallic films with different thicknesses and angles of incidence. Zn, Ti, Cr, Al, and Cu are evaluated and compared with Au. In addition, the wavelength selection is discussed, and the oxidation effects are also briefly analysed.

基于表面等离子体共振的传感器在检测窄声脉冲方面表现出有吸引力的特征，因为它们可以作为准点检测器。为了检测快速超声波压力波，系统会感应固定入射角和固定波长的反射光束强度。因此，提出了 Kretschmann 的玻璃-金属-水配置的最佳条件。通过对具有不同厚度和入射角的不同低成本金属薄膜的反射率曲线进行数值模拟来进行优化。对锌、钛、铬、铝和铜进行评估并与金进行比较。此外，讨论了波长选择，并简要分析了氧化效应。