平凸型氮化硅球面微透镜的研究

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介绍了用激光化学汽相沉积(LCVD)球面微透镜的技术"首先对激光化学汽相沉积法获得球面微透镜进行了理论分析,并用计算机分析了在一定沉积条件下的微透镜厚度剖面形状及光学聚焦特性。其后介绍了激光化学汽相沉积的实验装置,用该装置在平面石英玻璃衬底上,制出了平凸型氮化硅球面微透镜,并对其参量进行了测量。实验中还摸索了激光化学汽相沉积的沉积工艺。实验结果表明,通过控制源气体的化学配比与浓度,调节激光功率与衬底上的光斑尺寸,选择沉积时间,可以获得不同直径!透明!表面光滑的氮化硅球面微透镜。
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