Optical polarization response at gold nanosheet edges probed by scanning near-field optical microscopy<xref rid="cpb_27_8_087801fn1" ref-type="fn">*</xref><fn id="cpb_27_8_087801fn1"><label>*</label><p>Project supported by the National Key Basic Research Program of China (Grant No. 2013CB934004) and the Fundamental Research Funds for the Central Universities, China (Grant No. YWF-13-D2-XX-14).</p></fn>

Optical polarization response at gold nanosheet edges probed by scanning near-field optical microscopy**

Project supported by the National Key Basic Research Program of China (Grant No. 2013CB934004) and the Fundamental Research Funds for the Central Universities, China (Grant No. YWF-13-D2-XX-14).

Bi Zhuan-Fang¹, Yang Mu², Shang Guang-Yi^{1, †}

(color online) (a) Schematic of experimental setup for near-field optical detection, in which the gold triangle nanosheet is not to scale. (b) Enlarged configuration showing probe position during detection. (c) Optical image of a representative etched tapered fiber probe without coating (the scale bar is 50μm), and inset shows SEM image.