【摘要】 介绍了一种用于近场扫描光学显微镜(SNOM)中的高透过率光纤探针的制作方法。采用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,并通过激光消融的方法得到直径、圆锥角均十分理想、表面光滑的针尖,所获探针直径变化范围为80～200nm,锥度40°～81°,透过率3.5×10-3。更多还原

【Abstract】 A one-step technique of fabricating a high-transmission fiber probe for near-field scanning optical microscope(NSOM)is presented.A commercial single-mode silica fiber with a low GeO2-doped core was etched in hydrofluoric acid(HF).At a proper ratio of the etching solution,followed by laser ablation,smooth faced tip with satisfied cone angle and diameter was obtained.The tips diameters are 80～200 nm,and the taper angle are 40°～81°,transmission efficiency is 3.5×10-3.更多还原