Fontana Eduardo, Kim Jung-Mu, Llamas-Garro Ignacio, Cavalcanti Gustavo Oliveira
Appl Opt. 2015 Nov 1;54(31):9200-4. doi: 10.1364/AO.54.009200.
Surface plasmon resonance (SPR) based sensors are usually designed using the Kretschmann prism coupling configuration in which an input beam couples with a surface plasmon through a thin metal film. This is generally preferred by sensor developers for building planar devices instead of the Otto prism coupling configuration, which, for efficient coupling, requires the metal surface to be maintained at a distance on the order of the wavelength from the input prism surface. In this paper, we report on the microfabrication and characterization of an Otto chip device, which is suitable for applications of the SPR effect in gas sensing and biosensing.
基于表面等离子体共振（SPR）的传感器通常采用Kretschmann棱镜耦合结构进行设计，在这种结构中，输入光束通过薄金属膜与表面等离子体耦合。与Otto棱镜耦合结构相比，传感器开发者通常更喜欢这种结构来制造平面设备，因为对于Otto棱镜耦合结构，为了实现高效耦合，需要将金属表面与输入棱镜表面保持在波长量级的距离上。在本文中，我们报道了一种适用于SPR效应在气体传感和生物传感中应用的Otto芯片器件的微加工和表征。
