外文题目: Far-field optical imaging with subdiffraction resolution enabled by nonlinear saturation absorption
作者: Ding, Chenliang; Wei, Jingsong
刊名: Sci Rep
年: 2016 卷: 6 文章编号：18845
英文关键词:

STRUCTURED-ILLUMINATION MICROSCOPY; SOLID IMMERSION LENS; DIFFRACTION-LIMIT; BROAD-BAND; THIN-FILM; SUPERRESOLUTION; FLUORESCENCE; NANOSCOPY; PINHOLE; CELL
英文摘要:
The resolution of far-field optical imaging is required to improve beyond the Abbe limit to the subdiffraction or even the nanoscale. In this work, inspired by scanning electronic microscopy (SEM) imaging, in which carbon (or Au) thin films are usually required to be coated on the sample surface before imaging to remove the charging effect while imaging by electrons. We propose a saturation-absorption-induced far-field super-resolution optical imaging method (SAI-SRIM). In the SAI-SRIM, the carbon (or Au) layers in SEM imaging are replaced by nonlinear-saturation-absorption (NSA) thin films, which are directly coated onto the sample surfaces using advanced thin film deposition techniques. The surface fluctuant morphologies are replicated to the NSA thin films, accordingly. The coated sample surfaces are then imaged using conventional laser scanning microscopy. Consequently, the imaging resolution is greatly improved, and subdiffraction-resolved optical images are obtained theoretically and experimentally. The SAI-SRIM provides an effective and easy way to achieve far-field super-resolution optical imaging for sample surfaces with geometric fluctuant morphology characteristics.


文献类型: 期刊论文
正文语种: English
收录类别: SCI
DOI: 10.1038/srep18845


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