论文部分内容阅读
引言与传统光学提高透镜数值孔径、缩短光波长的思路不同,近场光学提高光学分辨率和存储密度是基于完全不同的原理。近场光学显微术基于隐失波探测及局域场中隐失波与物质相互作用的原理,光学分辨率与波长无关,突破了经典光学中分辨率衍射极限,达到纳米量级,使光学分辨率提高了几十倍甚至上百倍。近场光学理论研究涉及纳米尺度光波的物理特征与现象,如隐失波的分布、局域场增强、非传播场转换等。国际学术界明确提出近场光学是光学通向纳米科学技术的桥梁。
INTRODUCTION Unlike traditional optics for increasing the numerical aperture of lenses and shortening the wavelength of light, near-field optics enhances optical resolution and storage density based on completely different principles. Near-field optical microscopy is based on the principle of evanescent wave detection and the interaction between evanescent waves and matter in the local field. The optical resolution has nothing to do with the wavelength, which breaks through the diffraction limit of resolution in classical optics and reaches the order of nanometers. Resolution increased by several times or even a hundred times. Near-field optical theory involves the physical characteristics and phenomena of nanoscale light waves, such as the distribution of evanescent waves, local field enhancement, and non-propagation field conversion. International academics made it clear that near-field optics is a bridge to optical science and technology.