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We proposed a perfectly facet-free surface-emitting 1.3-μm DFB laser toward cost-effective light source, and confirmed the same performances as the usual DFB lasers and an on-wafer measurement.
In the sliding contact between a rigid indenter and a softer deforming surface, a wear scar is formed in the softer surface. This wear scar consists of a groove flanked by two shoulders, where part of the material from the groove is transferred to these shoulders and the rest is actually removed from the surface as wear debris. The proportion of actually removed material is characterised by the degree...
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