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本文介绍了一种用于近场扫描光学显微镜(NSOM)中的高透过率光纤探针的制作方法.采用缓冲氢氟酸腐蚀低掺杂的普通单模石英光纤,选取适当比例的腐蚀液,可以得到直径、圆锥角均十分理想的针尖.这种方法不需要高掺杂的特殊光纤或是采用先熔拉后腐蚀的复合工艺.针尖经过镀膜后经测量为针尖直径100nm、透过率5.5×10-4.
This article describes a method for making high-transmittance fiber-optic probes for use in near-field scanning optical microscopy (NSOM). The use of buffered hydrofluoric acid corrosion of low-doped ordinary single-mode silica fiber, select the appropriate proportion of the etching solution, you can get diameter, cone angle is very ideal tip. This method does not require highly doped special optical fibers or composite processes that use a premelt etch. The tip of the needle was measured after coating as a needle tip diameter of 100nm, the transmittance of 5.5 × 10-4.