Abstract: A laser device is provided. The laser device includes a stack of epitaxial layers, a first conductive layer, an intermediate layer, and a first electrode. The stack of epitaxial layers has a central region and an edge region. The stack of epitaxial layers includes a first reflective structure, an active region disposed on the first reflective structure, a second reflective structure disposed on the active region. The first conductive layer disposes on the stack of epitaxial layers and covers the central region and at least a part of the edge region. The intermediate layer has a first opening that corresponding to the central region of the stack of epitaxial layers, wherein the intermediate layer comprises insulating material or metal. The first electrode disposes on the first conductive layer.

Abstract: A tooling system is disclosed for wood or metal working including a working element, and a work piece engagement surface at least partially surrounding, positioned adjacent to, or positioned proximate to, the working element, the work piece feedable toward the working element or the working element feedable across the work piece when the work piece is positioned against or supported by the work piece engagement surface; wherein the work piece engagement surface includes a low friction and/or non-stick coating. The workpiece engagement surface may be roughened up such that it has an average surface roughness (RA) of between about 1 micrometer and about 4 micrometers to facilitate its adhesion with the low friction coating while providing a low friction coating with a low coefficient of kinetic friction.