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Characterization of etched facets for GaN-based lasers

机译:GaN基激光器蚀刻面的特性

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摘要

Dry-etching of laser facets is commonly used for (InAl)GaN/sapphire-based structures since the epitaxial planes of the nitride layers are rotated with respect to the substrate planes making cleaving impractical. To achieve steep and smooth facets by chemically assisted ion beam etching, a 3-layer resist system is developed for patterning.
机译:激光刻面的干法蚀刻通常用于(InAl)GaN /基于蓝宝石的结构,因为氮化物层的外延平面相对于衬底平面旋转,使得切割不可行。为了通过化学辅助离子束蚀刻获得陡峭且光滑的刻面,开发了一种用于构图的三层抗蚀剂系统。

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